xref: /llvm-project/libcxx/test/std/numerics/c.math/cmath.pass.cpp (revision c4f593ba1a72e0d9d74e440ea7e627e6b0f16689) 
1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <cmath>
11 
12 #include <cmath>
13 #include <limits>
14 #include <type_traits>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 #include "hexfloat.h"
19 
20 // convertible to int/float/double/etc
21 template <class T, int N=0>
22 struct Value {
23     operator T () { return T(N); }
24 };
25 
26 // See PR21083
27 // Ambiguous is a user-defined type that defines its own overloads of cmath
28 // functions. When the std overloads are candidates too (by using or adl),
29 // they should not interfere.
30 struct Ambiguous : std::true_type { // ADL
31     operator float () { return 0.f; }
32     operator double () { return 0.; }
33 };
34 Ambiguous abs(Ambiguous){ return Ambiguous(); }
35 Ambiguous acos(Ambiguous){ return Ambiguous(); }
36 Ambiguous asin(Ambiguous){ return Ambiguous(); }
37 Ambiguous atan(Ambiguous){ return Ambiguous(); }
38 Ambiguous atan2(Ambiguous, Ambiguous){ return Ambiguous(); }
39 Ambiguous ceil(Ambiguous){ return Ambiguous(); }
40 Ambiguous cos(Ambiguous){ return Ambiguous(); }
41 Ambiguous cosh(Ambiguous){ return Ambiguous(); }
42 Ambiguous exp(Ambiguous){ return Ambiguous(); }
43 Ambiguous fabs(Ambiguous){ return Ambiguous(); }
44 Ambiguous floor(Ambiguous){ return Ambiguous(); }
45 Ambiguous fmod(Ambiguous, Ambiguous){ return Ambiguous(); }
46 Ambiguous frexp(Ambiguous, int*){ return Ambiguous(); }
47 Ambiguous ldexp(Ambiguous, int){ return Ambiguous(); }
48 Ambiguous log(Ambiguous){ return Ambiguous(); }
49 Ambiguous log10(Ambiguous){ return Ambiguous(); }
50 Ambiguous modf(Ambiguous, Ambiguous*){ return Ambiguous(); }
51 Ambiguous pow(Ambiguous, Ambiguous){ return Ambiguous(); }
52 Ambiguous sin(Ambiguous){ return Ambiguous(); }
53 Ambiguous sinh(Ambiguous){ return Ambiguous(); }
54 Ambiguous sqrt(Ambiguous){ return Ambiguous(); }
55 Ambiguous tan(Ambiguous){ return Ambiguous(); }
56 Ambiguous tanh(Ambiguous){ return Ambiguous(); }
57 Ambiguous signbit(Ambiguous){ return Ambiguous(); }
58 Ambiguous fpclassify(Ambiguous){ return Ambiguous(); }
59 Ambiguous isfinite(Ambiguous){ return Ambiguous(); }
60 Ambiguous isnormal(Ambiguous){ return Ambiguous(); }
61 Ambiguous isgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
62 Ambiguous isgreaterequal(Ambiguous, Ambiguous){ return Ambiguous(); }
63 Ambiguous isless(Ambiguous, Ambiguous){ return Ambiguous(); }
64 Ambiguous islessequal(Ambiguous, Ambiguous){ return Ambiguous(); }
65 Ambiguous islessgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
66 Ambiguous isunordered(Ambiguous, Ambiguous){ return Ambiguous(); }
67 Ambiguous acosh(Ambiguous){ return Ambiguous(); }
68 Ambiguous asinh(Ambiguous){ return Ambiguous(); }
69 Ambiguous atanh(Ambiguous){ return Ambiguous(); }
70 Ambiguous cbrt(Ambiguous){ return Ambiguous(); }
71 Ambiguous copysign(Ambiguous, Ambiguous){ return Ambiguous(); }
72 Ambiguous erf(Ambiguous){ return Ambiguous(); }
73 Ambiguous erfc(Ambiguous){ return Ambiguous(); }
74 Ambiguous exp2(Ambiguous){ return Ambiguous(); }
75 Ambiguous expm1(Ambiguous){ return Ambiguous(); }
76 Ambiguous fdim(Ambiguous, Ambiguous){ return Ambiguous(); }
77 Ambiguous fma(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
78 Ambiguous fmax(Ambiguous, Ambiguous){ return Ambiguous(); }
79 Ambiguous fmin(Ambiguous, Ambiguous){ return Ambiguous(); }
80 Ambiguous hypot(Ambiguous, Ambiguous){ return Ambiguous(); }
81 Ambiguous hypot(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
82 Ambiguous ilogb(Ambiguous){ return Ambiguous(); }
83 Ambiguous lgamma(Ambiguous){ return Ambiguous(); }
84 Ambiguous llrint(Ambiguous){ return Ambiguous(); }
85 Ambiguous llround(Ambiguous){ return Ambiguous(); }
86 Ambiguous log1p(Ambiguous){ return Ambiguous(); }
87 Ambiguous log2(Ambiguous){ return Ambiguous(); }
88 Ambiguous logb(Ambiguous){ return Ambiguous(); }
89 Ambiguous lrint(Ambiguous){ return Ambiguous(); }
90 Ambiguous lround(Ambiguous){ return Ambiguous(); }
91 Ambiguous nearbyint(Ambiguous){ return Ambiguous(); }
92 Ambiguous nextafter(Ambiguous, Ambiguous){ return Ambiguous(); }
93 Ambiguous nexttoward(Ambiguous, Ambiguous){ return Ambiguous(); }
94 Ambiguous remainder(Ambiguous, Ambiguous){ return Ambiguous(); }
95 Ambiguous remquo(Ambiguous, Ambiguous, int*){ return Ambiguous(); }
96 Ambiguous rint(Ambiguous){ return Ambiguous(); }
97 Ambiguous round(Ambiguous){ return Ambiguous(); }
98 Ambiguous scalbln(Ambiguous, Ambiguous){ return Ambiguous(); }
99 Ambiguous scalbn(Ambiguous, Ambiguous){ return Ambiguous(); }
100 Ambiguous tgamma(Ambiguous){ return Ambiguous(); }
101 Ambiguous trunc(Ambiguous){ return Ambiguous(); }
102 
103 void test_abs()
104 {
105     static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
106     static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
107     static_assert((std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
108     static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value), "");
109     assert(std::abs(-1.) == 1);
110 }
111 
112 void test_acos()
113 {
114     static_assert((std::is_same<decltype(std::acos((float)0)), float>::value), "");
115     static_assert((std::is_same<decltype(std::acos((bool)0)), double>::value), "");
116     static_assert((std::is_same<decltype(std::acos((unsigned short)0)), double>::value), "");
117     static_assert((std::is_same<decltype(std::acos((int)0)), double>::value), "");
118     static_assert((std::is_same<decltype(std::acos((unsigned int)0)), double>::value), "");
119     static_assert((std::is_same<decltype(std::acos((long)0)), double>::value), "");
120     static_assert((std::is_same<decltype(std::acos((unsigned long)0)), double>::value), "");
121     static_assert((std::is_same<decltype(std::acos((long long)0)), double>::value), "");
122     static_assert((std::is_same<decltype(std::acos((unsigned long long)0)), double>::value), "");
123     static_assert((std::is_same<decltype(std::acos((double)0)), double>::value), "");
124     static_assert((std::is_same<decltype(std::acos((long double)0)), long double>::value), "");
125     static_assert((std::is_same<decltype(std::acosf(0)), float>::value), "");
126     static_assert((std::is_same<decltype(std::acosl(0)), long double>::value), "");
127     static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
128     assert(std::acos(1) == 0);
129 }
130 
131 void test_asin()
132 {
133     static_assert((std::is_same<decltype(std::asin((float)0)), float>::value), "");
134     static_assert((std::is_same<decltype(std::asin((bool)0)), double>::value), "");
135     static_assert((std::is_same<decltype(std::asin((unsigned short)0)), double>::value), "");
136     static_assert((std::is_same<decltype(std::asin((int)0)), double>::value), "");
137     static_assert((std::is_same<decltype(std::asin((unsigned int)0)), double>::value), "");
138     static_assert((std::is_same<decltype(std::asin((long)0)), double>::value), "");
139     static_assert((std::is_same<decltype(std::asin((unsigned long)0)), double>::value), "");
140     static_assert((std::is_same<decltype(std::asin((long long)0)), double>::value), "");
141     static_assert((std::is_same<decltype(std::asin((unsigned long long)0)), double>::value), "");
142     static_assert((std::is_same<decltype(std::asin((double)0)), double>::value), "");
143     static_assert((std::is_same<decltype(std::asin((long double)0)), long double>::value), "");
144     static_assert((std::is_same<decltype(std::asinf(0)), float>::value), "");
145     static_assert((std::is_same<decltype(std::asinl(0)), long double>::value), "");
146     static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
147     assert(std::asin(0) == 0);
148 }
149 
150 void test_atan()
151 {
152     static_assert((std::is_same<decltype(std::atan((float)0)), float>::value), "");
153     static_assert((std::is_same<decltype(std::atan((bool)0)), double>::value), "");
154     static_assert((std::is_same<decltype(std::atan((unsigned short)0)), double>::value), "");
155     static_assert((std::is_same<decltype(std::atan((int)0)), double>::value), "");
156     static_assert((std::is_same<decltype(std::atan((unsigned int)0)), double>::value), "");
157     static_assert((std::is_same<decltype(std::atan((long)0)), double>::value), "");
158     static_assert((std::is_same<decltype(std::atan((unsigned long)0)), double>::value), "");
159     static_assert((std::is_same<decltype(std::atan((long long)0)), double>::value), "");
160     static_assert((std::is_same<decltype(std::atan((unsigned long long)0)), double>::value), "");
161     static_assert((std::is_same<decltype(std::atan((double)0)), double>::value), "");
162     static_assert((std::is_same<decltype(std::atan((long double)0)), long double>::value), "");
163     static_assert((std::is_same<decltype(std::atanf(0)), float>::value), "");
164     static_assert((std::is_same<decltype(std::atanl(0)), long double>::value), "");
165     static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
166     assert(std::atan(0) == 0);
167 }
168 
169 void test_atan2()
170 {
171     static_assert((std::is_same<decltype(std::atan2((float)0, (float)0)), float>::value), "");
172     static_assert((std::is_same<decltype(std::atan2((bool)0, (float)0)), double>::value), "");
173     static_assert((std::is_same<decltype(std::atan2((unsigned short)0, (double)0)), double>::value), "");
174     static_assert((std::is_same<decltype(std::atan2((int)0, (long double)0)), long double>::value), "");
175     static_assert((std::is_same<decltype(std::atan2((float)0, (unsigned int)0)), double>::value), "");
176     static_assert((std::is_same<decltype(std::atan2((double)0, (long)0)), double>::value), "");
177     static_assert((std::is_same<decltype(std::atan2((long double)0, (unsigned long)0)), long double>::value), "");
178     static_assert((std::is_same<decltype(std::atan2((int)0, (long long)0)), double>::value), "");
179     static_assert((std::is_same<decltype(std::atan2((int)0, (unsigned long long)0)), double>::value), "");
180     static_assert((std::is_same<decltype(std::atan2((double)0, (double)0)), double>::value), "");
181     static_assert((std::is_same<decltype(std::atan2((long double)0, (long double)0)), long double>::value), "");
182     static_assert((std::is_same<decltype(std::atan2((float)0, (double)0)), double>::value), "");
183     static_assert((std::is_same<decltype(std::atan2((float)0, (long double)0)), long double>::value), "");
184     static_assert((std::is_same<decltype(std::atan2((double)0, (long double)0)), long double>::value), "");
185     static_assert((std::is_same<decltype(std::atan2f(0,0)), float>::value), "");
186     static_assert((std::is_same<decltype(std::atan2l(0,0)), long double>::value), "");
187     static_assert((std::is_same<decltype(std::atan2((int)0, (int)0)), double>::value), "");
188     static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
189     assert(std::atan2(0,1) == 0);
190 }
191 
192 void test_ceil()
193 {
194     static_assert((std::is_same<decltype(std::ceil((float)0)), float>::value), "");
195     static_assert((std::is_same<decltype(std::ceil((bool)0)), double>::value), "");
196     static_assert((std::is_same<decltype(std::ceil((unsigned short)0)), double>::value), "");
197     static_assert((std::is_same<decltype(std::ceil((int)0)), double>::value), "");
198     static_assert((std::is_same<decltype(std::ceil((unsigned int)0)), double>::value), "");
199     static_assert((std::is_same<decltype(std::ceil((long)0)), double>::value), "");
200     static_assert((std::is_same<decltype(std::ceil((unsigned long)0)), double>::value), "");
201     static_assert((std::is_same<decltype(std::ceil((long long)0)), double>::value), "");
202     static_assert((std::is_same<decltype(std::ceil((unsigned long long)0)), double>::value), "");
203     static_assert((std::is_same<decltype(std::ceil((double)0)), double>::value), "");
204     static_assert((std::is_same<decltype(std::ceil((long double)0)), long double>::value), "");
205     static_assert((std::is_same<decltype(std::ceilf(0)), float>::value), "");
206     static_assert((std::is_same<decltype(std::ceill(0)), long double>::value), "");
207     static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
208     assert(std::ceil(0) == 0);
209 }
210 
211 void test_cos()
212 {
213     static_assert((std::is_same<decltype(std::cos((float)0)), float>::value), "");
214     static_assert((std::is_same<decltype(std::cos((bool)0)), double>::value), "");
215     static_assert((std::is_same<decltype(std::cos((unsigned short)0)), double>::value), "");
216     static_assert((std::is_same<decltype(std::cos((int)0)), double>::value), "");
217     static_assert((std::is_same<decltype(std::cos((unsigned int)0)), double>::value), "");
218     static_assert((std::is_same<decltype(std::cos((long)0)), double>::value), "");
219     static_assert((std::is_same<decltype(std::cos((unsigned long)0)), double>::value), "");
220     static_assert((std::is_same<decltype(std::cos((long long)0)), double>::value), "");
221     static_assert((std::is_same<decltype(std::cos((unsigned long long)0)), double>::value), "");
222     static_assert((std::is_same<decltype(std::cos((double)0)), double>::value), "");
223     static_assert((std::is_same<decltype(std::cos((long double)0)), long double>::value), "");
224     static_assert((std::is_same<decltype(std::cosf(0)), float>::value), "");
225     static_assert((std::is_same<decltype(std::cosl(0)), long double>::value), "");
226     static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
227     assert(std::cos(0) == 1);
228 }
229 
230 void test_cosh()
231 {
232     static_assert((std::is_same<decltype(std::cosh((float)0)), float>::value), "");
233     static_assert((std::is_same<decltype(std::cosh((bool)0)), double>::value), "");
234     static_assert((std::is_same<decltype(std::cosh((unsigned short)0)), double>::value), "");
235     static_assert((std::is_same<decltype(std::cosh((int)0)), double>::value), "");
236     static_assert((std::is_same<decltype(std::cosh((unsigned int)0)), double>::value), "");
237     static_assert((std::is_same<decltype(std::cosh((long)0)), double>::value), "");
238     static_assert((std::is_same<decltype(std::cosh((unsigned long)0)), double>::value), "");
239     static_assert((std::is_same<decltype(std::cosh((long long)0)), double>::value), "");
240     static_assert((std::is_same<decltype(std::cosh((unsigned long long)0)), double>::value), "");
241     static_assert((std::is_same<decltype(std::cosh((double)0)), double>::value), "");
242     static_assert((std::is_same<decltype(std::cosh((long double)0)), long double>::value), "");
243     static_assert((std::is_same<decltype(std::coshf(0)), float>::value), "");
244     static_assert((std::is_same<decltype(std::coshl(0)), long double>::value), "");
245     static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
246     assert(std::cosh(0) == 1);
247 }
248 
249 void test_exp()
250 {
251     static_assert((std::is_same<decltype(std::exp((float)0)), float>::value), "");
252     static_assert((std::is_same<decltype(std::exp((bool)0)), double>::value), "");
253     static_assert((std::is_same<decltype(std::exp((unsigned short)0)), double>::value), "");
254     static_assert((std::is_same<decltype(std::exp((int)0)), double>::value), "");
255     static_assert((std::is_same<decltype(std::exp((unsigned int)0)), double>::value), "");
256     static_assert((std::is_same<decltype(std::exp((long)0)), double>::value), "");
257     static_assert((std::is_same<decltype(std::exp((unsigned long)0)), double>::value), "");
258     static_assert((std::is_same<decltype(std::exp((long long)0)), double>::value), "");
259     static_assert((std::is_same<decltype(std::exp((unsigned long long)0)), double>::value), "");
260     static_assert((std::is_same<decltype(std::exp((double)0)), double>::value), "");
261     static_assert((std::is_same<decltype(std::exp((long double)0)), long double>::value), "");
262     static_assert((std::is_same<decltype(std::expf(0)), float>::value), "");
263     static_assert((std::is_same<decltype(std::expl(0)), long double>::value), "");
264     static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
265     assert(std::exp(0) == 1);
266 }
267 
268 void test_fabs()
269 {
270     static_assert((std::is_same<decltype(std::fabs((float)0)), float>::value), "");
271     static_assert((std::is_same<decltype(std::fabs((bool)0)), double>::value), "");
272     static_assert((std::is_same<decltype(std::fabs((unsigned short)0)), double>::value), "");
273     static_assert((std::is_same<decltype(std::fabs((int)0)), double>::value), "");
274     static_assert((std::is_same<decltype(std::fabs((unsigned int)0)), double>::value), "");
275     static_assert((std::is_same<decltype(std::fabs((long)0)), double>::value), "");
276     static_assert((std::is_same<decltype(std::fabs((unsigned long)0)), double>::value), "");
277     static_assert((std::is_same<decltype(std::fabs((long long)0)), double>::value), "");
278     static_assert((std::is_same<decltype(std::fabs((unsigned long long)0)), double>::value), "");
279     static_assert((std::is_same<decltype(std::fabs((double)0)), double>::value), "");
280     static_assert((std::is_same<decltype(std::fabs((long double)0)), long double>::value), "");
281     static_assert((std::is_same<decltype(std::fabsf(0.0f)), float>::value), "");
282     static_assert((std::is_same<decltype(std::fabsl(0.0L)), long double>::value), "");
283     static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
284     assert(std::fabs(-1) == 1);
285 }
286 
287 void test_floor()
288 {
289     static_assert((std::is_same<decltype(std::floor((float)0)), float>::value), "");
290     static_assert((std::is_same<decltype(std::floor((bool)0)), double>::value), "");
291     static_assert((std::is_same<decltype(std::floor((unsigned short)0)), double>::value), "");
292     static_assert((std::is_same<decltype(std::floor((int)0)), double>::value), "");
293     static_assert((std::is_same<decltype(std::floor((unsigned int)0)), double>::value), "");
294     static_assert((std::is_same<decltype(std::floor((long)0)), double>::value), "");
295     static_assert((std::is_same<decltype(std::floor((unsigned long)0)), double>::value), "");
296     static_assert((std::is_same<decltype(std::floor((long long)0)), double>::value), "");
297     static_assert((std::is_same<decltype(std::floor((unsigned long long)0)), double>::value), "");
298     static_assert((std::is_same<decltype(std::floor((double)0)), double>::value), "");
299     static_assert((std::is_same<decltype(std::floor((long double)0)), long double>::value), "");
300     static_assert((std::is_same<decltype(std::floorf(0)), float>::value), "");
301     static_assert((std::is_same<decltype(std::floorl(0)), long double>::value), "");
302     static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
303     assert(std::floor(1) == 1);
304 }
305 
306 void test_fmod()
307 {
308     static_assert((std::is_same<decltype(std::fmod((float)0, (float)0)), float>::value), "");
309     static_assert((std::is_same<decltype(std::fmod((bool)0, (float)0)), double>::value), "");
310     static_assert((std::is_same<decltype(std::fmod((unsigned short)0, (double)0)), double>::value), "");
311     static_assert((std::is_same<decltype(std::fmod((int)0, (long double)0)), long double>::value), "");
312     static_assert((std::is_same<decltype(std::fmod((float)0, (unsigned int)0)), double>::value), "");
313     static_assert((std::is_same<decltype(std::fmod((double)0, (long)0)), double>::value), "");
314     static_assert((std::is_same<decltype(std::fmod((long double)0, (unsigned long)0)), long double>::value), "");
315     static_assert((std::is_same<decltype(std::fmod((int)0, (long long)0)), double>::value), "");
316     static_assert((std::is_same<decltype(std::fmod((int)0, (unsigned long long)0)), double>::value), "");
317     static_assert((std::is_same<decltype(std::fmod((double)0, (double)0)), double>::value), "");
318     static_assert((std::is_same<decltype(std::fmod((long double)0, (long double)0)), long double>::value), "");
319     static_assert((std::is_same<decltype(std::fmod((float)0, (double)0)), double>::value), "");
320     static_assert((std::is_same<decltype(std::fmod((float)0, (long double)0)), long double>::value), "");
321     static_assert((std::is_same<decltype(std::fmod((double)0, (long double)0)), long double>::value), "");
322     static_assert((std::is_same<decltype(std::fmodf(0,0)), float>::value), "");
323     static_assert((std::is_same<decltype(std::fmodl(0,0)), long double>::value), "");
324     static_assert((std::is_same<decltype(std::fmod((int)0, (int)0)), double>::value), "");
325     static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
326     assert(std::fmod(1.5,1) == .5);
327 }
328 
329 void test_frexp()
330 {
331     int ip;
332     static_assert((std::is_same<decltype(std::frexp((float)0, &ip)), float>::value), "");
333     static_assert((std::is_same<decltype(std::frexp((bool)0, &ip)), double>::value), "");
334     static_assert((std::is_same<decltype(std::frexp((unsigned short)0, &ip)), double>::value), "");
335     static_assert((std::is_same<decltype(std::frexp((int)0, &ip)), double>::value), "");
336     static_assert((std::is_same<decltype(std::frexp((unsigned int)0, &ip)), double>::value), "");
337     static_assert((std::is_same<decltype(std::frexp((long)0, &ip)), double>::value), "");
338     static_assert((std::is_same<decltype(std::frexp((unsigned long)0, &ip)), double>::value), "");
339     static_assert((std::is_same<decltype(std::frexp((long long)0, &ip)), double>::value), "");
340     static_assert((std::is_same<decltype(std::frexp((unsigned long long)0, &ip)), double>::value), "");
341     static_assert((std::is_same<decltype(std::frexp((double)0, &ip)), double>::value), "");
342     static_assert((std::is_same<decltype(std::frexp((long double)0, &ip)), long double>::value), "");
343     static_assert((std::is_same<decltype(std::frexpf(0, &ip)), float>::value), "");
344     static_assert((std::is_same<decltype(std::frexpl(0, &ip)), long double>::value), "");
345     static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
346     assert(std::frexp(0, &ip) == 0);
347 }
348 
349 void test_ldexp()
350 {
351     int ip = 1;
352     static_assert((std::is_same<decltype(std::ldexp((float)0, ip)), float>::value), "");
353     static_assert((std::is_same<decltype(std::ldexp((bool)0, ip)), double>::value), "");
354     static_assert((std::is_same<decltype(std::ldexp((unsigned short)0, ip)), double>::value), "");
355     static_assert((std::is_same<decltype(std::ldexp((int)0, ip)), double>::value), "");
356     static_assert((std::is_same<decltype(std::ldexp((unsigned int)0, ip)), double>::value), "");
357     static_assert((std::is_same<decltype(std::ldexp((long)0, ip)), double>::value), "");
358     static_assert((std::is_same<decltype(std::ldexp((unsigned long)0, ip)), double>::value), "");
359     static_assert((std::is_same<decltype(std::ldexp((long long)0, ip)), double>::value), "");
360     static_assert((std::is_same<decltype(std::ldexp((unsigned long long)0, ip)), double>::value), "");
361     static_assert((std::is_same<decltype(std::ldexp((double)0, ip)), double>::value), "");
362     static_assert((std::is_same<decltype(std::ldexp((long double)0, ip)), long double>::value), "");
363     static_assert((std::is_same<decltype(std::ldexpf(0, ip)), float>::value), "");
364     static_assert((std::is_same<decltype(std::ldexpl(0, ip)), long double>::value), "");
365     static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
366     assert(std::ldexp(1, ip) == 2);
367 }
368 
369 void test_log()
370 {
371     static_assert((std::is_same<decltype(std::log((float)0)), float>::value), "");
372     static_assert((std::is_same<decltype(std::log((bool)0)), double>::value), "");
373     static_assert((std::is_same<decltype(std::log((unsigned short)0)), double>::value), "");
374     static_assert((std::is_same<decltype(std::log((int)0)), double>::value), "");
375     static_assert((std::is_same<decltype(std::log((unsigned int)0)), double>::value), "");
376     static_assert((std::is_same<decltype(std::log((long)0)), double>::value), "");
377     static_assert((std::is_same<decltype(std::log((unsigned long)0)), double>::value), "");
378     static_assert((std::is_same<decltype(std::log((long long)0)), double>::value), "");
379     static_assert((std::is_same<decltype(std::log((unsigned long long)0)), double>::value), "");
380     static_assert((std::is_same<decltype(std::log((double)0)), double>::value), "");
381     static_assert((std::is_same<decltype(std::log((long double)0)), long double>::value), "");
382     static_assert((std::is_same<decltype(std::logf(0)), float>::value), "");
383     static_assert((std::is_same<decltype(std::logl(0)), long double>::value), "");
384     static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
385     assert(std::log(1) == 0);
386 }
387 
388 void test_log10()
389 {
390     static_assert((std::is_same<decltype(std::log10((float)0)), float>::value), "");
391     static_assert((std::is_same<decltype(std::log10((bool)0)), double>::value), "");
392     static_assert((std::is_same<decltype(std::log10((unsigned short)0)), double>::value), "");
393     static_assert((std::is_same<decltype(std::log10((int)0)), double>::value), "");
394     static_assert((std::is_same<decltype(std::log10((unsigned int)0)), double>::value), "");
395     static_assert((std::is_same<decltype(std::log10((long)0)), double>::value), "");
396     static_assert((std::is_same<decltype(std::log10((unsigned long)0)), double>::value), "");
397     static_assert((std::is_same<decltype(std::log10((long long)0)), double>::value), "");
398     static_assert((std::is_same<decltype(std::log10((unsigned long long)0)), double>::value), "");
399     static_assert((std::is_same<decltype(std::log10((double)0)), double>::value), "");
400     static_assert((std::is_same<decltype(std::log10((long double)0)), long double>::value), "");
401     static_assert((std::is_same<decltype(std::log10f(0)), float>::value), "");
402     static_assert((std::is_same<decltype(std::log10l(0)), long double>::value), "");
403     static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
404     assert(std::log10(1) == 0);
405 }
406 
407 void test_modf()
408 {
409     static_assert((std::is_same<decltype(std::modf((float)0, (float*)0)), float>::value), "");
410     static_assert((std::is_same<decltype(std::modf((double)0, (double*)0)), double>::value), "");
411     static_assert((std::is_same<decltype(std::modf((long double)0, (long double*)0)), long double>::value), "");
412     static_assert((std::is_same<decltype(std::modff(0, (float*)0)), float>::value), "");
413     static_assert((std::is_same<decltype(std::modfl(0, (long double*)0)), long double>::value), "");
414     static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
415     double i;
416     assert(std::modf(1., &i) == 0);
417 }
418 
419 void test_pow()
420 {
421     static_assert((std::is_same<decltype(std::pow((float)0, (float)0)), float>::value), "");
422     static_assert((std::is_same<decltype(std::pow((bool)0, (float)0)), double>::value), "");
423     static_assert((std::is_same<decltype(std::pow((unsigned short)0, (double)0)), double>::value), "");
424     static_assert((std::is_same<decltype(std::pow((int)0, (long double)0)), long double>::value), "");
425     static_assert((std::is_same<decltype(std::pow((float)0, (unsigned int)0)), double>::value), "");
426     static_assert((std::is_same<decltype(std::pow((double)0, (long)0)), double>::value), "");
427     static_assert((std::is_same<decltype(std::pow((long double)0, (unsigned long)0)), long double>::value), "");
428     static_assert((std::is_same<decltype(std::pow((int)0, (long long)0)), double>::value), "");
429     static_assert((std::is_same<decltype(std::pow((int)0, (unsigned long long)0)), double>::value), "");
430     static_assert((std::is_same<decltype(std::pow((double)0, (double)0)), double>::value), "");
431     static_assert((std::is_same<decltype(std::pow((long double)0, (long double)0)), long double>::value), "");
432     static_assert((std::is_same<decltype(std::pow((float)0, (double)0)), double>::value), "");
433     static_assert((std::is_same<decltype(std::pow((float)0, (long double)0)), long double>::value), "");
434     static_assert((std::is_same<decltype(std::pow((double)0, (long double)0)), long double>::value), "");
435     static_assert((std::is_same<decltype(std::powf(0,0)), float>::value), "");
436     static_assert((std::is_same<decltype(std::powl(0,0)), long double>::value), "");
437     static_assert((std::is_same<decltype(std::pow((int)0, (int)0)), double>::value), "");
438 //     static_assert((std::is_same<decltype(std::pow(Value<int>(), (int)0)), double>::value), "");
439 //     static_assert((std::is_same<decltype(std::pow(Value<long double>(), (float)0)), long double>::value), "");
440 //     static_assert((std::is_same<decltype(std::pow((float) 0, Value<float>())), float>::value), "");
441     static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
442     assert(std::pow(1,1) == 1);
443 //     assert(std::pow(Value<int,1>(), Value<float,1>())  == 1);
444 //     assert(std::pow(1.0f, Value<double,1>()) == 1);
445 //     assert(std::pow(1.0, Value<int,1>()) == 1);
446 //     assert(std::pow(Value<long double,1>(), 1LL) == 1);
447 }
448 
449 void test_sin()
450 {
451     static_assert((std::is_same<decltype(std::sin((float)0)), float>::value), "");
452     static_assert((std::is_same<decltype(std::sin((bool)0)), double>::value), "");
453     static_assert((std::is_same<decltype(std::sin((unsigned short)0)), double>::value), "");
454     static_assert((std::is_same<decltype(std::sin((int)0)), double>::value), "");
455     static_assert((std::is_same<decltype(std::sin((unsigned int)0)), double>::value), "");
456     static_assert((std::is_same<decltype(std::sin((long)0)), double>::value), "");
457     static_assert((std::is_same<decltype(std::sin((unsigned long)0)), double>::value), "");
458     static_assert((std::is_same<decltype(std::sin((long long)0)), double>::value), "");
459     static_assert((std::is_same<decltype(std::sin((unsigned long long)0)), double>::value), "");
460     static_assert((std::is_same<decltype(std::sin((double)0)), double>::value), "");
461     static_assert((std::is_same<decltype(std::sin((long double)0)), long double>::value), "");
462     static_assert((std::is_same<decltype(std::sinf(0)), float>::value), "");
463     static_assert((std::is_same<decltype(std::sinl(0)), long double>::value), "");
464     static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
465     assert(std::sin(0) == 0);
466 }
467 
468 void test_sinh()
469 {
470     static_assert((std::is_same<decltype(std::sinh((float)0)), float>::value), "");
471     static_assert((std::is_same<decltype(std::sinh((bool)0)), double>::value), "");
472     static_assert((std::is_same<decltype(std::sinh((unsigned short)0)), double>::value), "");
473     static_assert((std::is_same<decltype(std::sinh((int)0)), double>::value), "");
474     static_assert((std::is_same<decltype(std::sinh((unsigned int)0)), double>::value), "");
475     static_assert((std::is_same<decltype(std::sinh((long)0)), double>::value), "");
476     static_assert((std::is_same<decltype(std::sinh((unsigned long)0)), double>::value), "");
477     static_assert((std::is_same<decltype(std::sinh((long long)0)), double>::value), "");
478     static_assert((std::is_same<decltype(std::sinh((unsigned long long)0)), double>::value), "");
479     static_assert((std::is_same<decltype(std::sinh((double)0)), double>::value), "");
480     static_assert((std::is_same<decltype(std::sinh((long double)0)), long double>::value), "");
481     static_assert((std::is_same<decltype(std::sinhf(0)), float>::value), "");
482     static_assert((std::is_same<decltype(std::sinhl(0)), long double>::value), "");
483     static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
484     assert(std::sinh(0) == 0);
485 }
486 
487 void test_sqrt()
488 {
489     static_assert((std::is_same<decltype(std::sqrt((float)0)), float>::value), "");
490     static_assert((std::is_same<decltype(std::sqrt((bool)0)), double>::value), "");
491     static_assert((std::is_same<decltype(std::sqrt((unsigned short)0)), double>::value), "");
492     static_assert((std::is_same<decltype(std::sqrt((int)0)), double>::value), "");
493     static_assert((std::is_same<decltype(std::sqrt((unsigned int)0)), double>::value), "");
494     static_assert((std::is_same<decltype(std::sqrt((long)0)), double>::value), "");
495     static_assert((std::is_same<decltype(std::sqrt((unsigned long)0)), double>::value), "");
496     static_assert((std::is_same<decltype(std::sqrt((long long)0)), double>::value), "");
497     static_assert((std::is_same<decltype(std::sqrt((unsigned long long)0)), double>::value), "");
498     static_assert((std::is_same<decltype(std::sqrt((double)0)), double>::value), "");
499     static_assert((std::is_same<decltype(std::sqrt((long double)0)), long double>::value), "");
500     static_assert((std::is_same<decltype(std::sqrtf(0)), float>::value), "");
501     static_assert((std::is_same<decltype(std::sqrtl(0)), long double>::value), "");
502     static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
503     assert(std::sqrt(4) == 2);
504 }
505 
506 void test_tan()
507 {
508     static_assert((std::is_same<decltype(std::tan((float)0)), float>::value), "");
509     static_assert((std::is_same<decltype(std::tan((bool)0)), double>::value), "");
510     static_assert((std::is_same<decltype(std::tan((unsigned short)0)), double>::value), "");
511     static_assert((std::is_same<decltype(std::tan((int)0)), double>::value), "");
512     static_assert((std::is_same<decltype(std::tan((unsigned int)0)), double>::value), "");
513     static_assert((std::is_same<decltype(std::tan((long)0)), double>::value), "");
514     static_assert((std::is_same<decltype(std::tan((unsigned long)0)), double>::value), "");
515     static_assert((std::is_same<decltype(std::tan((long long)0)), double>::value), "");
516     static_assert((std::is_same<decltype(std::tan((unsigned long long)0)), double>::value), "");
517     static_assert((std::is_same<decltype(std::tan((double)0)), double>::value), "");
518     static_assert((std::is_same<decltype(std::tan((long double)0)), long double>::value), "");
519     static_assert((std::is_same<decltype(std::tanf(0)), float>::value), "");
520     static_assert((std::is_same<decltype(std::tanl(0)), long double>::value), "");
521     static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
522     assert(std::tan(0) == 0);
523 }
524 
525 void test_tanh()
526 {
527     static_assert((std::is_same<decltype(std::tanh((float)0)), float>::value), "");
528     static_assert((std::is_same<decltype(std::tanh((bool)0)), double>::value), "");
529     static_assert((std::is_same<decltype(std::tanh((unsigned short)0)), double>::value), "");
530     static_assert((std::is_same<decltype(std::tanh((int)0)), double>::value), "");
531     static_assert((std::is_same<decltype(std::tanh((unsigned int)0)), double>::value), "");
532     static_assert((std::is_same<decltype(std::tanh((long)0)), double>::value), "");
533     static_assert((std::is_same<decltype(std::tanh((unsigned long)0)), double>::value), "");
534     static_assert((std::is_same<decltype(std::tanh((long long)0)), double>::value), "");
535     static_assert((std::is_same<decltype(std::tanh((unsigned long long)0)), double>::value), "");
536     static_assert((std::is_same<decltype(std::tanh((double)0)), double>::value), "");
537     static_assert((std::is_same<decltype(std::tanh((long double)0)), long double>::value), "");
538     static_assert((std::is_same<decltype(std::tanhf(0)), float>::value), "");
539     static_assert((std::is_same<decltype(std::tanhl(0)), long double>::value), "");
540     static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
541     assert(std::tanh(0) == 0);
542 }
543 
544 void test_signbit()
545 {
546 #ifdef signbit
547 #error signbit defined
548 #endif
549     static_assert((std::is_same<decltype(std::signbit((float)0)), bool>::value), "");
550     static_assert((std::is_same<decltype(std::signbit((double)0)), bool>::value), "");
551     static_assert((std::is_same<decltype(std::signbit(0)), bool>::value), "");
552     static_assert((std::is_same<decltype(std::signbit((long double)0)), bool>::value), "");
553     static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
554     assert(std::signbit(-1.0) == true);
555     assert(std::signbit(0u) == false);
556     assert(std::signbit(std::numeric_limits<unsigned>::max()) == false);
557     assert(std::signbit(0) == false);
558     assert(std::signbit(1) == false);
559     assert(std::signbit(-1) == true);
560     assert(std::signbit(std::numeric_limits<int>::max()) == false);
561     assert(std::signbit(std::numeric_limits<int>::min()) == true);
562 }
563 
564 void test_fpclassify()
565 {
566 #ifdef fpclassify
567 #error fpclassify defined
568 #endif
569     static_assert((std::is_same<decltype(std::fpclassify((float)0)), int>::value), "");
570     static_assert((std::is_same<decltype(std::fpclassify((double)0)), int>::value), "");
571     static_assert((std::is_same<decltype(std::fpclassify(0)), int>::value), "");
572     static_assert((std::is_same<decltype(std::fpclassify((long double)0)), int>::value), "");
573     static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
574     assert(std::fpclassify(-1.0) == FP_NORMAL);
575     assert(std::fpclassify(0) == FP_ZERO);
576     assert(std::fpclassify(1) == FP_NORMAL);
577     assert(std::fpclassify(-1) == FP_NORMAL);
578     assert(std::fpclassify(std::numeric_limits<int>::max()) == FP_NORMAL);
579     assert(std::fpclassify(std::numeric_limits<int>::min()) == FP_NORMAL);
580 }
581 
582 void test_isfinite()
583 {
584 #ifdef isfinite
585 #error isfinite defined
586 #endif
587     static_assert((std::is_same<decltype(std::isfinite((float)0)), bool>::value), "");
588     static_assert((std::is_same<decltype(std::isfinite((double)0)), bool>::value), "");
589     static_assert((std::is_same<decltype(std::isfinite(0)), bool>::value), "");
590     static_assert((std::is_same<decltype(std::isfinite((long double)0)), bool>::value), "");
591     static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
592     assert(std::isfinite(-1.0) == true);
593     assert(std::isfinite(0) == true);
594     assert(std::isfinite(1) == true);
595     assert(std::isfinite(-1) == true);
596     assert(std::isfinite(std::numeric_limits<int>::max()) == true);
597     assert(std::isfinite(std::numeric_limits<int>::min()) == true);
598 }
599 
600 void test_isnormal()
601 {
602 #ifdef isnormal
603 #error isnormal defined
604 #endif
605     static_assert((std::is_same<decltype(std::isnormal((float)0)), bool>::value), "");
606     static_assert((std::is_same<decltype(std::isnormal((double)0)), bool>::value), "");
607     static_assert((std::is_same<decltype(std::isnormal(0)), bool>::value), "");
608     static_assert((std::is_same<decltype(std::isnormal((long double)0)), bool>::value), "");
609     static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
610     assert(std::isnormal(-1.0) == true);
611     assert(std::isnormal(0) == false);
612     assert(std::isnormal(1) == true);
613     assert(std::isnormal(-1) == true);
614     assert(std::isnormal(std::numeric_limits<int>::max()) == true);
615     assert(std::isnormal(std::numeric_limits<int>::min()) == true);
616 }
617 
618 void test_isgreater()
619 {
620 #ifdef isgreater
621 #error isgreater defined
622 #endif
623     static_assert((std::is_same<decltype(std::isgreater((float)0, (float)0)), bool>::value), "");
624     static_assert((std::is_same<decltype(std::isgreater((float)0, (double)0)), bool>::value), "");
625     static_assert((std::is_same<decltype(std::isgreater((float)0, (long double)0)), bool>::value), "");
626     static_assert((std::is_same<decltype(std::isgreater((double)0, (float)0)), bool>::value), "");
627     static_assert((std::is_same<decltype(std::isgreater((double)0, (double)0)), bool>::value), "");
628     static_assert((std::is_same<decltype(std::isgreater(0, (double)0)), bool>::value), "");
629     static_assert((std::is_same<decltype(std::isgreater((double)0, (long double)0)), bool>::value), "");
630     static_assert((std::is_same<decltype(std::isgreater((long double)0, (float)0)), bool>::value), "");
631     static_assert((std::is_same<decltype(std::isgreater((long double)0, (double)0)), bool>::value), "");
632     static_assert((std::is_same<decltype(std::isgreater((long double)0, (long double)0)), bool>::value), "");
633     static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
634     assert(std::isgreater(-1.0, 0.F) == false);
635 }
636 
637 void test_isgreaterequal()
638 {
639 #ifdef isgreaterequal
640 #error isgreaterequal defined
641 #endif
642     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (float)0)), bool>::value), "");
643     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (double)0)), bool>::value), "");
644     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (long double)0)), bool>::value), "");
645     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (float)0)), bool>::value), "");
646     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (double)0)), bool>::value), "");
647     static_assert((std::is_same<decltype(std::isgreaterequal(0, (double)0)), bool>::value), "");
648     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (long double)0)), bool>::value), "");
649     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (float)0)), bool>::value), "");
650     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (double)0)), bool>::value), "");
651     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (long double)0)), bool>::value), "");
652     static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
653     assert(std::isgreaterequal(-1.0, 0.F) == false);
654 }
655 
656 void test_isinf()
657 {
658 #ifdef isinf
659 #error isinf defined
660 #endif
661     static_assert((std::is_same<decltype(std::isinf((float)0)), bool>::value), "");
662 
663     typedef decltype(std::isinf((double)0)) DoubleRetType;
664 #if !defined(__linux__) || defined(__clang__)
665     static_assert((std::is_same<DoubleRetType, bool>::value), "");
666 #else
667     // GLIBC < 2.23 defines 'isinf(double)' with a return type of 'int' in
668     // all C++ dialects. The test should tolerate this when libc++ can't work
669     // around it.
670     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
671     static_assert((std::is_same<DoubleRetType, bool>::value
672                 || std::is_same<DoubleRetType, int>::value), "");
673 #endif
674 
675     static_assert((std::is_same<decltype(std::isinf(0)), bool>::value), "");
676     static_assert((std::is_same<decltype(std::isinf((long double)0)), bool>::value), "");
677     assert(std::isinf(-1.0) == false);
678     assert(std::isinf(0) == false);
679     assert(std::isinf(1) == false);
680     assert(std::isinf(-1) == false);
681     assert(std::isinf(std::numeric_limits<int>::max()) == false);
682     assert(std::isinf(std::numeric_limits<int>::min()) == false);
683 }
684 
685 void test_isless()
686 {
687 #ifdef isless
688 #error isless defined
689 #endif
690     static_assert((std::is_same<decltype(std::isless((float)0, (float)0)), bool>::value), "");
691     static_assert((std::is_same<decltype(std::isless((float)0, (double)0)), bool>::value), "");
692     static_assert((std::is_same<decltype(std::isless((float)0, (long double)0)), bool>::value), "");
693     static_assert((std::is_same<decltype(std::isless((double)0, (float)0)), bool>::value), "");
694     static_assert((std::is_same<decltype(std::isless((double)0, (double)0)), bool>::value), "");
695     static_assert((std::is_same<decltype(std::isless(0, (double)0)), bool>::value), "");
696     static_assert((std::is_same<decltype(std::isless((double)0, (long double)0)), bool>::value), "");
697     static_assert((std::is_same<decltype(std::isless((long double)0, (float)0)), bool>::value), "");
698     static_assert((std::is_same<decltype(std::isless((long double)0, (double)0)), bool>::value), "");
699     static_assert((std::is_same<decltype(std::isless((long double)0, (long double)0)), bool>::value), "");
700     static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
701     assert(std::isless(-1.0, 0.F) == true);
702 }
703 
704 void test_islessequal()
705 {
706 #ifdef islessequal
707 #error islessequal defined
708 #endif
709     static_assert((std::is_same<decltype(std::islessequal((float)0, (float)0)), bool>::value), "");
710     static_assert((std::is_same<decltype(std::islessequal((float)0, (double)0)), bool>::value), "");
711     static_assert((std::is_same<decltype(std::islessequal((float)0, (long double)0)), bool>::value), "");
712     static_assert((std::is_same<decltype(std::islessequal((double)0, (float)0)), bool>::value), "");
713     static_assert((std::is_same<decltype(std::islessequal((double)0, (double)0)), bool>::value), "");
714     static_assert((std::is_same<decltype(std::islessequal(0, (double)0)), bool>::value), "");
715     static_assert((std::is_same<decltype(std::islessequal((double)0, (long double)0)), bool>::value), "");
716     static_assert((std::is_same<decltype(std::islessequal((long double)0, (float)0)), bool>::value), "");
717     static_assert((std::is_same<decltype(std::islessequal((long double)0, (double)0)), bool>::value), "");
718     static_assert((std::is_same<decltype(std::islessequal((long double)0, (long double)0)), bool>::value), "");
719     static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
720     assert(std::islessequal(-1.0, 0.F) == true);
721 }
722 
723 void test_islessgreater()
724 {
725 #ifdef islessgreater
726 #error islessgreater defined
727 #endif
728     static_assert((std::is_same<decltype(std::islessgreater((float)0, (float)0)), bool>::value), "");
729     static_assert((std::is_same<decltype(std::islessgreater((float)0, (double)0)), bool>::value), "");
730     static_assert((std::is_same<decltype(std::islessgreater((float)0, (long double)0)), bool>::value), "");
731     static_assert((std::is_same<decltype(std::islessgreater((double)0, (float)0)), bool>::value), "");
732     static_assert((std::is_same<decltype(std::islessgreater((double)0, (double)0)), bool>::value), "");
733     static_assert((std::is_same<decltype(std::islessgreater(0, (double)0)), bool>::value), "");
734     static_assert((std::is_same<decltype(std::islessgreater((double)0, (long double)0)), bool>::value), "");
735     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (float)0)), bool>::value), "");
736     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (double)0)), bool>::value), "");
737     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (long double)0)), bool>::value), "");
738     static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
739     assert(std::islessgreater(-1.0, 0.F) == true);
740 }
741 
742 void test_isnan()
743 {
744 #ifdef isnan
745 #error isnan defined
746 #endif
747     static_assert((std::is_same<decltype(std::isnan((float)0)), bool>::value), "");
748 
749     typedef decltype(std::isnan((double)0)) DoubleRetType;
750 #if !defined(__linux__) || defined(__clang__)
751     static_assert((std::is_same<DoubleRetType, bool>::value), "");
752 #else
753     // GLIBC < 2.23 defines 'isinf(double)' with a return type of 'int' in
754     // all C++ dialects. The test should tolerate this when libc++ can't work
755     // around it.
756     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
757     static_assert((std::is_same<DoubleRetType, bool>::value
758                 || std::is_same<DoubleRetType, int>::value), "");
759 #endif
760 
761     static_assert((std::is_same<decltype(std::isnan(0)), bool>::value), "");
762     static_assert((std::is_same<decltype(std::isnan((long double)0)), bool>::value), "");
763     assert(std::isnan(-1.0) == false);
764     assert(std::isnan(0) == false);
765     assert(std::isnan(1) == false);
766     assert(std::isnan(-1) == false);
767     assert(std::isnan(std::numeric_limits<int>::max()) == false);
768     assert(std::isnan(std::numeric_limits<int>::min()) == false);
769 }
770 
771 void test_isunordered()
772 {
773 #ifdef isunordered
774 #error isunordered defined
775 #endif
776     static_assert((std::is_same<decltype(std::isunordered((float)0, (float)0)), bool>::value), "");
777     static_assert((std::is_same<decltype(std::isunordered((float)0, (double)0)), bool>::value), "");
778     static_assert((std::is_same<decltype(std::isunordered((float)0, (long double)0)), bool>::value), "");
779     static_assert((std::is_same<decltype(std::isunordered((double)0, (float)0)), bool>::value), "");
780     static_assert((std::is_same<decltype(std::isunordered((double)0, (double)0)), bool>::value), "");
781     static_assert((std::is_same<decltype(std::isunordered(0, (double)0)), bool>::value), "");
782     static_assert((std::is_same<decltype(std::isunordered((double)0, (long double)0)), bool>::value), "");
783     static_assert((std::is_same<decltype(std::isunordered((long double)0, (float)0)), bool>::value), "");
784     static_assert((std::is_same<decltype(std::isunordered((long double)0, (double)0)), bool>::value), "");
785     static_assert((std::is_same<decltype(std::isunordered((long double)0, (long double)0)), bool>::value), "");
786     static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
787     assert(std::isunordered(-1.0, 0.F) == false);
788 }
789 
790 void test_acosh()
791 {
792     static_assert((std::is_same<decltype(std::acosh((float)0)), float>::value), "");
793     static_assert((std::is_same<decltype(std::acosh((bool)0)), double>::value), "");
794     static_assert((std::is_same<decltype(std::acosh((unsigned short)0)), double>::value), "");
795     static_assert((std::is_same<decltype(std::acosh((int)0)), double>::value), "");
796     static_assert((std::is_same<decltype(std::acosh((unsigned int)0)), double>::value), "");
797     static_assert((std::is_same<decltype(std::acosh((long)0)), double>::value), "");
798     static_assert((std::is_same<decltype(std::acosh((unsigned long)0)), double>::value), "");
799     static_assert((std::is_same<decltype(std::acosh((long long)0)), double>::value), "");
800     static_assert((std::is_same<decltype(std::acosh((unsigned long long)0)), double>::value), "");
801     static_assert((std::is_same<decltype(std::acosh((double)0)), double>::value), "");
802     static_assert((std::is_same<decltype(std::acosh((long double)0)), long double>::value), "");
803     static_assert((std::is_same<decltype(std::acoshf(0)), float>::value), "");
804     static_assert((std::is_same<decltype(std::acoshl(0)), long double>::value), "");
805     static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
806     assert(std::acosh(1) == 0);
807 }
808 
809 void test_asinh()
810 {
811     static_assert((std::is_same<decltype(std::asinh((float)0)), float>::value), "");
812     static_assert((std::is_same<decltype(std::asinh((bool)0)), double>::value), "");
813     static_assert((std::is_same<decltype(std::asinh((unsigned short)0)), double>::value), "");
814     static_assert((std::is_same<decltype(std::asinh((int)0)), double>::value), "");
815     static_assert((std::is_same<decltype(std::asinh((unsigned int)0)), double>::value), "");
816     static_assert((std::is_same<decltype(std::asinh((long)0)), double>::value), "");
817     static_assert((std::is_same<decltype(std::asinh((unsigned long)0)), double>::value), "");
818     static_assert((std::is_same<decltype(std::asinh((long long)0)), double>::value), "");
819     static_assert((std::is_same<decltype(std::asinh((unsigned long long)0)), double>::value), "");
820     static_assert((std::is_same<decltype(std::asinh((double)0)), double>::value), "");
821     static_assert((std::is_same<decltype(std::asinh((long double)0)), long double>::value), "");
822     static_assert((std::is_same<decltype(std::asinhf(0)), float>::value), "");
823     static_assert((std::is_same<decltype(std::asinhl(0)), long double>::value), "");
824     static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
825     assert(std::asinh(0) == 0);
826 }
827 
828 void test_atanh()
829 {
830     static_assert((std::is_same<decltype(std::atanh((float)0)), float>::value), "");
831     static_assert((std::is_same<decltype(std::atanh((bool)0)), double>::value), "");
832     static_assert((std::is_same<decltype(std::atanh((unsigned short)0)), double>::value), "");
833     static_assert((std::is_same<decltype(std::atanh((int)0)), double>::value), "");
834     static_assert((std::is_same<decltype(std::atanh((unsigned int)0)), double>::value), "");
835     static_assert((std::is_same<decltype(std::atanh((long)0)), double>::value), "");
836     static_assert((std::is_same<decltype(std::atanh((unsigned long)0)), double>::value), "");
837     static_assert((std::is_same<decltype(std::atanh((long long)0)), double>::value), "");
838     static_assert((std::is_same<decltype(std::atanh((unsigned long long)0)), double>::value), "");
839     static_assert((std::is_same<decltype(std::atanh((double)0)), double>::value), "");
840     static_assert((std::is_same<decltype(std::atanh((long double)0)), long double>::value), "");
841     static_assert((std::is_same<decltype(std::atanhf(0)), float>::value), "");
842     static_assert((std::is_same<decltype(std::atanhl(0)), long double>::value), "");
843     static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
844     assert(std::atanh(0) == 0);
845 }
846 
847 void test_cbrt()
848 {
849     static_assert((std::is_same<decltype(std::cbrt((float)0)), float>::value), "");
850     static_assert((std::is_same<decltype(std::cbrt((bool)0)), double>::value), "");
851     static_assert((std::is_same<decltype(std::cbrt((unsigned short)0)), double>::value), "");
852     static_assert((std::is_same<decltype(std::cbrt((int)0)), double>::value), "");
853     static_assert((std::is_same<decltype(std::cbrt((unsigned int)0)), double>::value), "");
854     static_assert((std::is_same<decltype(std::cbrt((long)0)), double>::value), "");
855     static_assert((std::is_same<decltype(std::cbrt((unsigned long)0)), double>::value), "");
856     static_assert((std::is_same<decltype(std::cbrt((long long)0)), double>::value), "");
857     static_assert((std::is_same<decltype(std::cbrt((unsigned long long)0)), double>::value), "");
858     static_assert((std::is_same<decltype(std::cbrt((double)0)), double>::value), "");
859     static_assert((std::is_same<decltype(std::cbrt((long double)0)), long double>::value), "");
860     static_assert((std::is_same<decltype(std::cbrtf(0)), float>::value), "");
861     static_assert((std::is_same<decltype(std::cbrtl(0)), long double>::value), "");
862     static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value), "");
863     assert(std::cbrt(1) == 1);
864 }
865 
866 void test_copysign()
867 {
868     static_assert((std::is_same<decltype(std::copysign((float)0, (float)0)), float>::value), "");
869     static_assert((std::is_same<decltype(std::copysign((bool)0, (float)0)), double>::value), "");
870     static_assert((std::is_same<decltype(std::copysign((unsigned short)0, (double)0)), double>::value), "");
871     static_assert((std::is_same<decltype(std::copysign((int)0, (long double)0)), long double>::value), "");
872     static_assert((std::is_same<decltype(std::copysign((float)0, (unsigned int)0)), double>::value), "");
873     static_assert((std::is_same<decltype(std::copysign((double)0, (long)0)), double>::value), "");
874     static_assert((std::is_same<decltype(std::copysign((long double)0, (unsigned long)0)), long double>::value), "");
875     static_assert((std::is_same<decltype(std::copysign((int)0, (long long)0)), double>::value), "");
876     static_assert((std::is_same<decltype(std::copysign((int)0, (unsigned long long)0)), double>::value), "");
877     static_assert((std::is_same<decltype(std::copysign((double)0, (double)0)), double>::value), "");
878     static_assert((std::is_same<decltype(std::copysign((long double)0, (long double)0)), long double>::value), "");
879     static_assert((std::is_same<decltype(std::copysign((float)0, (double)0)), double>::value), "");
880     static_assert((std::is_same<decltype(std::copysign((float)0, (long double)0)), long double>::value), "");
881     static_assert((std::is_same<decltype(std::copysign((double)0, (long double)0)), long double>::value), "");
882     static_assert((std::is_same<decltype(std::copysignf(0,0)), float>::value), "");
883     static_assert((std::is_same<decltype(std::copysignl(0,0)), long double>::value), "");
884     static_assert((std::is_same<decltype(std::copysign((int)0, (int)0)), double>::value), "");
885     static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
886     assert(std::copysign(1,1) == 1);
887 }
888 
889 void test_erf()
890 {
891     static_assert((std::is_same<decltype(std::erf((float)0)), float>::value), "");
892     static_assert((std::is_same<decltype(std::erf((bool)0)), double>::value), "");
893     static_assert((std::is_same<decltype(std::erf((unsigned short)0)), double>::value), "");
894     static_assert((std::is_same<decltype(std::erf((int)0)), double>::value), "");
895     static_assert((std::is_same<decltype(std::erf((unsigned int)0)), double>::value), "");
896     static_assert((std::is_same<decltype(std::erf((long)0)), double>::value), "");
897     static_assert((std::is_same<decltype(std::erf((unsigned long)0)), double>::value), "");
898     static_assert((std::is_same<decltype(std::erf((long long)0)), double>::value), "");
899     static_assert((std::is_same<decltype(std::erf((unsigned long long)0)), double>::value), "");
900     static_assert((std::is_same<decltype(std::erf((double)0)), double>::value), "");
901     static_assert((std::is_same<decltype(std::erf((long double)0)), long double>::value), "");
902     static_assert((std::is_same<decltype(std::erff(0)), float>::value), "");
903     static_assert((std::is_same<decltype(std::erfl(0)), long double>::value), "");
904     static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
905     assert(std::erf(0) == 0);
906 }
907 
908 void test_erfc()
909 {
910     static_assert((std::is_same<decltype(std::erfc((float)0)), float>::value), "");
911     static_assert((std::is_same<decltype(std::erfc((bool)0)), double>::value), "");
912     static_assert((std::is_same<decltype(std::erfc((unsigned short)0)), double>::value), "");
913     static_assert((std::is_same<decltype(std::erfc((int)0)), double>::value), "");
914     static_assert((std::is_same<decltype(std::erfc((unsigned int)0)), double>::value), "");
915     static_assert((std::is_same<decltype(std::erfc((long)0)), double>::value), "");
916     static_assert((std::is_same<decltype(std::erfc((unsigned long)0)), double>::value), "");
917     static_assert((std::is_same<decltype(std::erfc((long long)0)), double>::value), "");
918     static_assert((std::is_same<decltype(std::erfc((unsigned long long)0)), double>::value), "");
919     static_assert((std::is_same<decltype(std::erfc((double)0)), double>::value), "");
920     static_assert((std::is_same<decltype(std::erfc((long double)0)), long double>::value), "");
921     static_assert((std::is_same<decltype(std::erfcf(0)), float>::value), "");
922     static_assert((std::is_same<decltype(std::erfcl(0)), long double>::value), "");
923     static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
924     assert(std::erfc(0) == 1);
925 }
926 
927 void test_exp2()
928 {
929     static_assert((std::is_same<decltype(std::exp2((float)0)), float>::value), "");
930     static_assert((std::is_same<decltype(std::exp2((bool)0)), double>::value), "");
931     static_assert((std::is_same<decltype(std::exp2((unsigned short)0)), double>::value), "");
932     static_assert((std::is_same<decltype(std::exp2((int)0)), double>::value), "");
933     static_assert((std::is_same<decltype(std::exp2((unsigned int)0)), double>::value), "");
934     static_assert((std::is_same<decltype(std::exp2((long)0)), double>::value), "");
935     static_assert((std::is_same<decltype(std::exp2((unsigned long)0)), double>::value), "");
936     static_assert((std::is_same<decltype(std::exp2((long long)0)), double>::value), "");
937     static_assert((std::is_same<decltype(std::exp2((unsigned long long)0)), double>::value), "");
938     static_assert((std::is_same<decltype(std::exp2((double)0)), double>::value), "");
939     static_assert((std::is_same<decltype(std::exp2((long double)0)), long double>::value), "");
940     static_assert((std::is_same<decltype(std::exp2f(0)), float>::value), "");
941     static_assert((std::is_same<decltype(std::exp2l(0)), long double>::value), "");
942     static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
943     assert(std::exp2(1) == 2);
944 }
945 
946 void test_expm1()
947 {
948     static_assert((std::is_same<decltype(std::expm1((float)0)), float>::value), "");
949     static_assert((std::is_same<decltype(std::expm1((bool)0)), double>::value), "");
950     static_assert((std::is_same<decltype(std::expm1((unsigned short)0)), double>::value), "");
951     static_assert((std::is_same<decltype(std::expm1((int)0)), double>::value), "");
952     static_assert((std::is_same<decltype(std::expm1((unsigned int)0)), double>::value), "");
953     static_assert((std::is_same<decltype(std::expm1((long)0)), double>::value), "");
954     static_assert((std::is_same<decltype(std::expm1((unsigned long)0)), double>::value), "");
955     static_assert((std::is_same<decltype(std::expm1((long long)0)), double>::value), "");
956     static_assert((std::is_same<decltype(std::expm1((unsigned long long)0)), double>::value), "");
957     static_assert((std::is_same<decltype(std::expm1((double)0)), double>::value), "");
958     static_assert((std::is_same<decltype(std::expm1((long double)0)), long double>::value), "");
959     static_assert((std::is_same<decltype(std::expm1f(0)), float>::value), "");
960     static_assert((std::is_same<decltype(std::expm1l(0)), long double>::value), "");
961     static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
962     assert(std::expm1(0) == 0);
963 }
964 
965 void test_fdim()
966 {
967     static_assert((std::is_same<decltype(std::fdim((float)0, (float)0)), float>::value), "");
968     static_assert((std::is_same<decltype(std::fdim((bool)0, (float)0)), double>::value), "");
969     static_assert((std::is_same<decltype(std::fdim((unsigned short)0, (double)0)), double>::value), "");
970     static_assert((std::is_same<decltype(std::fdim((int)0, (long double)0)), long double>::value), "");
971     static_assert((std::is_same<decltype(std::fdim((float)0, (unsigned int)0)), double>::value), "");
972     static_assert((std::is_same<decltype(std::fdim((double)0, (long)0)), double>::value), "");
973     static_assert((std::is_same<decltype(std::fdim((long double)0, (unsigned long)0)), long double>::value), "");
974     static_assert((std::is_same<decltype(std::fdim((int)0, (long long)0)), double>::value), "");
975     static_assert((std::is_same<decltype(std::fdim((int)0, (unsigned long long)0)), double>::value), "");
976     static_assert((std::is_same<decltype(std::fdim((double)0, (double)0)), double>::value), "");
977     static_assert((std::is_same<decltype(std::fdim((long double)0, (long double)0)), long double>::value), "");
978     static_assert((std::is_same<decltype(std::fdim((float)0, (double)0)), double>::value), "");
979     static_assert((std::is_same<decltype(std::fdim((float)0, (long double)0)), long double>::value), "");
980     static_assert((std::is_same<decltype(std::fdim((double)0, (long double)0)), long double>::value), "");
981     static_assert((std::is_same<decltype(std::fdimf(0,0)), float>::value), "");
982     static_assert((std::is_same<decltype(std::fdiml(0,0)), long double>::value), "");
983     static_assert((std::is_same<decltype(std::fdim((int)0, (int)0)), double>::value), "");
984     static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
985     assert(std::fdim(1,0) == 1);
986 }
987 
988 void test_fma()
989 {
990     static_assert((std::is_same<decltype(std::fma((bool)0, (float)0, (float)0)), double>::value), "");
991     static_assert((std::is_same<decltype(std::fma((char)0, (float)0, (float)0)), double>::value), "");
992     static_assert((std::is_same<decltype(std::fma((unsigned)0, (float)0, (float)0)), double>::value), "");
993     static_assert((std::is_same<decltype(std::fma((float)0, (int)0, (float)0)), double>::value), "");
994     static_assert((std::is_same<decltype(std::fma((float)0, (long)0, (float)0)), double>::value), "");
995     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (unsigned long long)0)), double>::value), "");
996     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (double)0)), double>::value), "");
997     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (long double)0)), long double>::value), "");
998     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (float)0)), float>::value), "");
999 
1000     static_assert((std::is_same<decltype(std::fma((bool)0, (double)0, (double)0)), double>::value), "");
1001     static_assert((std::is_same<decltype(std::fma((char)0, (double)0, (double)0)), double>::value), "");
1002     static_assert((std::is_same<decltype(std::fma((unsigned)0, (double)0, (double)0)), double>::value), "");
1003     static_assert((std::is_same<decltype(std::fma((double)0, (int)0, (double)0)), double>::value), "");
1004     static_assert((std::is_same<decltype(std::fma((double)0, (long)0, (double)0)), double>::value), "");
1005     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (unsigned long long)0)), double>::value), "");
1006     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (float)0)), double>::value), "");
1007     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (long double)0)), long double>::value), "");
1008     static_assert((std::is_same<decltype(std::fma((double)0, (double)0,  (double)0)), double>::value), "");
1009 
1010     static_assert((std::is_same<decltype(std::fma((bool)0, (long double)0, (long double)0)), long double>::value), "");
1011     static_assert((std::is_same<decltype(std::fma((char)0, (long double)0, (long double)0)), long double>::value), "");
1012     static_assert((std::is_same<decltype(std::fma((unsigned)0, (long double)0, (long double)0)), long double>::value), "");
1013     static_assert((std::is_same<decltype(std::fma((long double)0, (int)0, (long double)0)), long double>::value), "");
1014     static_assert((std::is_same<decltype(std::fma((long double)0, (long)0, (long double)0)), long double>::value), "");
1015     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (unsigned long long)0)), long double>::value), "");
1016     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (float)0)), long double>::value), "");
1017     static_assert((std::is_same<decltype(std::fma((double)0, (long double)0, (long double)0)), long double>::value), "");
1018     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
1019 
1020     static_assert((std::is_same<decltype(std::fmaf(0,0,0)), float>::value), "");
1021     static_assert((std::is_same<decltype(std::fmal(0,0,0)), long double>::value), "");
1022     static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1023     assert(std::fma(1,1,1) == 2);
1024 }
1025 
1026 void test_fmax()
1027 {
1028     static_assert((std::is_same<decltype(std::fmax((float)0, (float)0)), float>::value), "");
1029     static_assert((std::is_same<decltype(std::fmax((bool)0, (float)0)), double>::value), "");
1030     static_assert((std::is_same<decltype(std::fmax((unsigned short)0, (double)0)), double>::value), "");
1031     static_assert((std::is_same<decltype(std::fmax((int)0, (long double)0)), long double>::value), "");
1032     static_assert((std::is_same<decltype(std::fmax((float)0, (unsigned int)0)), double>::value), "");
1033     static_assert((std::is_same<decltype(std::fmax((double)0, (long)0)), double>::value), "");
1034     static_assert((std::is_same<decltype(std::fmax((long double)0, (unsigned long)0)), long double>::value), "");
1035     static_assert((std::is_same<decltype(std::fmax((int)0, (long long)0)), double>::value), "");
1036     static_assert((std::is_same<decltype(std::fmax((int)0, (unsigned long long)0)), double>::value), "");
1037     static_assert((std::is_same<decltype(std::fmax((double)0, (double)0)), double>::value), "");
1038     static_assert((std::is_same<decltype(std::fmax((long double)0, (long double)0)), long double>::value), "");
1039     static_assert((std::is_same<decltype(std::fmax((float)0, (double)0)), double>::value), "");
1040     static_assert((std::is_same<decltype(std::fmax((float)0, (long double)0)), long double>::value), "");
1041     static_assert((std::is_same<decltype(std::fmax((double)0, (long double)0)), long double>::value), "");
1042     static_assert((std::is_same<decltype(std::fmaxf(0,0)), float>::value), "");
1043     static_assert((std::is_same<decltype(std::fmaxl(0,0)), long double>::value), "");
1044     static_assert((std::is_same<decltype(std::fmax((int)0, (int)0)), double>::value), "");
1045     static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1046     assert(std::fmax(1,0) == 1);
1047 }
1048 
1049 void test_fmin()
1050 {
1051     static_assert((std::is_same<decltype(std::fmin((float)0, (float)0)), float>::value), "");
1052     static_assert((std::is_same<decltype(std::fmin((bool)0, (float)0)), double>::value), "");
1053     static_assert((std::is_same<decltype(std::fmin((unsigned short)0, (double)0)), double>::value), "");
1054     static_assert((std::is_same<decltype(std::fmin((int)0, (long double)0)), long double>::value), "");
1055     static_assert((std::is_same<decltype(std::fmin((float)0, (unsigned int)0)), double>::value), "");
1056     static_assert((std::is_same<decltype(std::fmin((double)0, (long)0)), double>::value), "");
1057     static_assert((std::is_same<decltype(std::fmin((long double)0, (unsigned long)0)), long double>::value), "");
1058     static_assert((std::is_same<decltype(std::fmin((int)0, (long long)0)), double>::value), "");
1059     static_assert((std::is_same<decltype(std::fmin((int)0, (unsigned long long)0)), double>::value), "");
1060     static_assert((std::is_same<decltype(std::fmin((double)0, (double)0)), double>::value), "");
1061     static_assert((std::is_same<decltype(std::fmin((long double)0, (long double)0)), long double>::value), "");
1062     static_assert((std::is_same<decltype(std::fmin((float)0, (double)0)), double>::value), "");
1063     static_assert((std::is_same<decltype(std::fmin((float)0, (long double)0)), long double>::value), "");
1064     static_assert((std::is_same<decltype(std::fmin((double)0, (long double)0)), long double>::value), "");
1065     static_assert((std::is_same<decltype(std::fminf(0,0)), float>::value), "");
1066     static_assert((std::is_same<decltype(std::fminl(0,0)), long double>::value), "");
1067     static_assert((std::is_same<decltype(std::fmin((int)0, (int)0)), double>::value), "");
1068     static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1069     assert(std::fmin(1,0) == 0);
1070 }
1071 
1072 void test_hypot()
1073 {
1074     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0)), float>::value), "");
1075     static_assert((std::is_same<decltype(std::hypot((bool)0, (float)0)), double>::value), "");
1076     static_assert((std::is_same<decltype(std::hypot((unsigned short)0, (double)0)), double>::value), "");
1077     static_assert((std::is_same<decltype(std::hypot((int)0, (long double)0)), long double>::value), "");
1078     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned int)0)), double>::value), "");
1079     static_assert((std::is_same<decltype(std::hypot((double)0, (long)0)), double>::value), "");
1080     static_assert((std::is_same<decltype(std::hypot((long double)0, (unsigned long)0)), long double>::value), "");
1081     static_assert((std::is_same<decltype(std::hypot((int)0, (long long)0)), double>::value), "");
1082     static_assert((std::is_same<decltype(std::hypot((int)0, (unsigned long long)0)), double>::value), "");
1083     static_assert((std::is_same<decltype(std::hypot((double)0, (double)0)), double>::value), "");
1084     static_assert((std::is_same<decltype(std::hypot((long double)0, (long double)0)), long double>::value), "");
1085     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0)), double>::value), "");
1086     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0)), long double>::value), "");
1087     static_assert((std::is_same<decltype(std::hypot((double)0, (long double)0)), long double>::value), "");
1088     static_assert((std::is_same<decltype(std::hypotf(0,0)), float>::value), "");
1089     static_assert((std::is_same<decltype(std::hypotl(0,0)), long double>::value), "");
1090     static_assert((std::is_same<decltype(std::hypot((int)0, (int)0)), double>::value), "");
1091     static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1092     assert(std::hypot(3,4) == 5);
1093 
1094 #if TEST_STD_VER > 14
1095     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (float)0)), float>::value), "");
1096     static_assert((std::is_same<decltype(std::hypot((float)0, (bool)0, (float)0)), double>::value), "");
1097     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned short)0, (double)0)), double>::value), "");
1098     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long double)0)), long double>::value), "");
1099     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned int)0)), double>::value), "");
1100     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long)0)), double>::value), "");
1101     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (unsigned long)0)), long double>::value), "");
1102     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long long)0)), double>::value), "");
1103     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (unsigned long long)0)), double>::value), "");
1104     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (double)0)), double>::value), "");
1105     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (long double)0)), long double>::value), "");
1106     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (double)0)), double>::value), "");
1107     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (long double)0)), long double>::value), "");
1108     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long double)0)), long double>::value), "");
1109     static_assert((std::is_same<decltype(std::hypot((int)0, (int)0, (int)0)), double>::value), "");
1110     static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1111 
1112     assert(std::hypot(2,3,6) == 7);
1113     assert(std::hypot(1,4,8) == 9);
1114 #endif
1115 }
1116 
1117 void test_ilogb()
1118 {
1119     static_assert((std::is_same<decltype(std::ilogb((float)0)), int>::value), "");
1120     static_assert((std::is_same<decltype(std::ilogb((bool)0)), int>::value), "");
1121     static_assert((std::is_same<decltype(std::ilogb((unsigned short)0)), int>::value), "");
1122     static_assert((std::is_same<decltype(std::ilogb((int)0)), int>::value), "");
1123     static_assert((std::is_same<decltype(std::ilogb((unsigned int)0)), int>::value), "");
1124     static_assert((std::is_same<decltype(std::ilogb((long)0)), int>::value), "");
1125     static_assert((std::is_same<decltype(std::ilogb((unsigned long)0)), int>::value), "");
1126     static_assert((std::is_same<decltype(std::ilogb((long long)0)), int>::value), "");
1127     static_assert((std::is_same<decltype(std::ilogb((unsigned long long)0)), int>::value), "");
1128     static_assert((std::is_same<decltype(std::ilogb((double)0)), int>::value), "");
1129     static_assert((std::is_same<decltype(std::ilogb((long double)0)), int>::value), "");
1130     static_assert((std::is_same<decltype(std::ilogbf(0)), int>::value), "");
1131     static_assert((std::is_same<decltype(std::ilogbl(0)), int>::value), "");
1132     static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
1133     assert(std::ilogb(1) == 0);
1134 }
1135 
1136 void test_lgamma()
1137 {
1138     static_assert((std::is_same<decltype(std::lgamma((float)0)), float>::value), "");
1139     static_assert((std::is_same<decltype(std::lgamma((bool)0)), double>::value), "");
1140     static_assert((std::is_same<decltype(std::lgamma((unsigned short)0)), double>::value), "");
1141     static_assert((std::is_same<decltype(std::lgamma((int)0)), double>::value), "");
1142     static_assert((std::is_same<decltype(std::lgamma((unsigned int)0)), double>::value), "");
1143     static_assert((std::is_same<decltype(std::lgamma((long)0)), double>::value), "");
1144     static_assert((std::is_same<decltype(std::lgamma((unsigned long)0)), double>::value), "");
1145     static_assert((std::is_same<decltype(std::lgamma((long long)0)), double>::value), "");
1146     static_assert((std::is_same<decltype(std::lgamma((unsigned long long)0)), double>::value), "");
1147     static_assert((std::is_same<decltype(std::lgamma((double)0)), double>::value), "");
1148     static_assert((std::is_same<decltype(std::lgamma((long double)0)), long double>::value), "");
1149     static_assert((std::is_same<decltype(std::lgammaf(0)), float>::value), "");
1150     static_assert((std::is_same<decltype(std::lgammal(0)), long double>::value), "");
1151     static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
1152     assert(std::lgamma(1) == 0);
1153 }
1154 
1155 void test_llrint()
1156 {
1157     static_assert((std::is_same<decltype(std::llrint((float)0)), long long>::value), "");
1158     static_assert((std::is_same<decltype(std::llrint((bool)0)), long long>::value), "");
1159     static_assert((std::is_same<decltype(std::llrint((unsigned short)0)), long long>::value), "");
1160     static_assert((std::is_same<decltype(std::llrint((int)0)), long long>::value), "");
1161     static_assert((std::is_same<decltype(std::llrint((unsigned int)0)), long long>::value), "");
1162     static_assert((std::is_same<decltype(std::llrint((long)0)), long long>::value), "");
1163     static_assert((std::is_same<decltype(std::llrint((unsigned long)0)), long long>::value), "");
1164     static_assert((std::is_same<decltype(std::llrint((long long)0)), long long>::value), "");
1165     static_assert((std::is_same<decltype(std::llrint((unsigned long long)0)), long long>::value), "");
1166     static_assert((std::is_same<decltype(std::llrint((double)0)), long long>::value), "");
1167     static_assert((std::is_same<decltype(std::llrint((long double)0)), long long>::value), "");
1168     static_assert((std::is_same<decltype(std::llrintf(0)), long long>::value), "");
1169     static_assert((std::is_same<decltype(std::llrintl(0)), long long>::value), "");
1170     static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
1171     assert(std::llrint(1) == 1LL);
1172 }
1173 
1174 void test_llround()
1175 {
1176     static_assert((std::is_same<decltype(std::llround((float)0)), long long>::value), "");
1177     static_assert((std::is_same<decltype(std::llround((bool)0)), long long>::value), "");
1178     static_assert((std::is_same<decltype(std::llround((unsigned short)0)), long long>::value), "");
1179     static_assert((std::is_same<decltype(std::llround((int)0)), long long>::value), "");
1180     static_assert((std::is_same<decltype(std::llround((unsigned int)0)), long long>::value), "");
1181     static_assert((std::is_same<decltype(std::llround((long)0)), long long>::value), "");
1182     static_assert((std::is_same<decltype(std::llround((unsigned long)0)), long long>::value), "");
1183     static_assert((std::is_same<decltype(std::llround((long long)0)), long long>::value), "");
1184     static_assert((std::is_same<decltype(std::llround((unsigned long long)0)), long long>::value), "");
1185     static_assert((std::is_same<decltype(std::llround((double)0)), long long>::value), "");
1186     static_assert((std::is_same<decltype(std::llround((long double)0)), long long>::value), "");
1187     static_assert((std::is_same<decltype(std::llroundf(0)), long long>::value), "");
1188     static_assert((std::is_same<decltype(std::llroundl(0)), long long>::value), "");
1189     static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
1190     assert(std::llround(1) == 1LL);
1191 }
1192 
1193 void test_log1p()
1194 {
1195     static_assert((std::is_same<decltype(std::log1p((float)0)), float>::value), "");
1196     static_assert((std::is_same<decltype(std::log1p((bool)0)), double>::value), "");
1197     static_assert((std::is_same<decltype(std::log1p((unsigned short)0)), double>::value), "");
1198     static_assert((std::is_same<decltype(std::log1p((int)0)), double>::value), "");
1199     static_assert((std::is_same<decltype(std::log1p((unsigned int)0)), double>::value), "");
1200     static_assert((std::is_same<decltype(std::log1p((long)0)), double>::value), "");
1201     static_assert((std::is_same<decltype(std::log1p((unsigned long)0)), double>::value), "");
1202     static_assert((std::is_same<decltype(std::log1p((long long)0)), double>::value), "");
1203     static_assert((std::is_same<decltype(std::log1p((unsigned long long)0)), double>::value), "");
1204     static_assert((std::is_same<decltype(std::log1p((double)0)), double>::value), "");
1205     static_assert((std::is_same<decltype(std::log1p((long double)0)), long double>::value), "");
1206     static_assert((std::is_same<decltype(std::log1pf(0)), float>::value), "");
1207     static_assert((std::is_same<decltype(std::log1pl(0)), long double>::value), "");
1208     static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
1209     assert(std::log1p(0) == 0);
1210 }
1211 
1212 void test_log2()
1213 {
1214     static_assert((std::is_same<decltype(std::log2((float)0)), float>::value), "");
1215     static_assert((std::is_same<decltype(std::log2((bool)0)), double>::value), "");
1216     static_assert((std::is_same<decltype(std::log2((unsigned short)0)), double>::value), "");
1217     static_assert((std::is_same<decltype(std::log2((int)0)), double>::value), "");
1218     static_assert((std::is_same<decltype(std::log2((unsigned int)0)), double>::value), "");
1219     static_assert((std::is_same<decltype(std::log2((long)0)), double>::value), "");
1220     static_assert((std::is_same<decltype(std::log2((unsigned long)0)), double>::value), "");
1221     static_assert((std::is_same<decltype(std::log2((long long)0)), double>::value), "");
1222     static_assert((std::is_same<decltype(std::log2((unsigned long long)0)), double>::value), "");
1223     static_assert((std::is_same<decltype(std::log2((double)0)), double>::value), "");
1224     static_assert((std::is_same<decltype(std::log2((long double)0)), long double>::value), "");
1225     static_assert((std::is_same<decltype(std::log2f(0)), float>::value), "");
1226     static_assert((std::is_same<decltype(std::log2l(0)), long double>::value), "");
1227     static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
1228     assert(std::log2(1) == 0);
1229 }
1230 
1231 void test_logb()
1232 {
1233     static_assert((std::is_same<decltype(std::logb((float)0)), float>::value), "");
1234     static_assert((std::is_same<decltype(std::logb((bool)0)), double>::value), "");
1235     static_assert((std::is_same<decltype(std::logb((unsigned short)0)), double>::value), "");
1236     static_assert((std::is_same<decltype(std::logb((int)0)), double>::value), "");
1237     static_assert((std::is_same<decltype(std::logb((unsigned int)0)), double>::value), "");
1238     static_assert((std::is_same<decltype(std::logb((long)0)), double>::value), "");
1239     static_assert((std::is_same<decltype(std::logb((unsigned long)0)), double>::value), "");
1240     static_assert((std::is_same<decltype(std::logb((long long)0)), double>::value), "");
1241     static_assert((std::is_same<decltype(std::logb((unsigned long long)0)), double>::value), "");
1242     static_assert((std::is_same<decltype(std::logb((double)0)), double>::value), "");
1243     static_assert((std::is_same<decltype(std::logb((long double)0)), long double>::value), "");
1244     static_assert((std::is_same<decltype(std::logbf(0)), float>::value), "");
1245     static_assert((std::is_same<decltype(std::logbl(0)), long double>::value), "");
1246     static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
1247     assert(std::logb(1) == 0);
1248 }
1249 
1250 void test_lrint()
1251 {
1252     static_assert((std::is_same<decltype(std::lrint((float)0)), long>::value), "");
1253     static_assert((std::is_same<decltype(std::lrint((bool)0)), long>::value), "");
1254     static_assert((std::is_same<decltype(std::lrint((unsigned short)0)), long>::value), "");
1255     static_assert((std::is_same<decltype(std::lrint((int)0)), long>::value), "");
1256     static_assert((std::is_same<decltype(std::lrint((unsigned int)0)), long>::value), "");
1257     static_assert((std::is_same<decltype(std::lrint((long)0)), long>::value), "");
1258     static_assert((std::is_same<decltype(std::lrint((unsigned long)0)), long>::value), "");
1259     static_assert((std::is_same<decltype(std::lrint((long long)0)), long>::value), "");
1260     static_assert((std::is_same<decltype(std::lrint((unsigned long long)0)), long>::value), "");
1261     static_assert((std::is_same<decltype(std::lrint((double)0)), long>::value), "");
1262     static_assert((std::is_same<decltype(std::lrint((long double)0)), long>::value), "");
1263     static_assert((std::is_same<decltype(std::lrintf(0)), long>::value), "");
1264     static_assert((std::is_same<decltype(std::lrintl(0)), long>::value), "");
1265     static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
1266     assert(std::lrint(1) == 1L);
1267 }
1268 
1269 void test_lround()
1270 {
1271     static_assert((std::is_same<decltype(std::lround((float)0)), long>::value), "");
1272     static_assert((std::is_same<decltype(std::lround((bool)0)), long>::value), "");
1273     static_assert((std::is_same<decltype(std::lround((unsigned short)0)), long>::value), "");
1274     static_assert((std::is_same<decltype(std::lround((int)0)), long>::value), "");
1275     static_assert((std::is_same<decltype(std::lround((unsigned int)0)), long>::value), "");
1276     static_assert((std::is_same<decltype(std::lround((long)0)), long>::value), "");
1277     static_assert((std::is_same<decltype(std::lround((unsigned long)0)), long>::value), "");
1278     static_assert((std::is_same<decltype(std::lround((long long)0)), long>::value), "");
1279     static_assert((std::is_same<decltype(std::lround((unsigned long long)0)), long>::value), "");
1280     static_assert((std::is_same<decltype(std::lround((double)0)), long>::value), "");
1281     static_assert((std::is_same<decltype(std::lround((long double)0)), long>::value), "");
1282     static_assert((std::is_same<decltype(std::lroundf(0)), long>::value), "");
1283     static_assert((std::is_same<decltype(std::lroundl(0)), long>::value), "");
1284     static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
1285     assert(std::lround(1) == 1L);
1286 }
1287 
1288 void test_nan()
1289 {
1290     static_assert((std::is_same<decltype(std::nan("")), double>::value), "");
1291     static_assert((std::is_same<decltype(std::nanf("")), float>::value), "");
1292     static_assert((std::is_same<decltype(std::nanl("")), long double>::value), "");
1293 }
1294 
1295 void test_nearbyint()
1296 {
1297     static_assert((std::is_same<decltype(std::nearbyint((float)0)), float>::value), "");
1298     static_assert((std::is_same<decltype(std::nearbyint((bool)0)), double>::value), "");
1299     static_assert((std::is_same<decltype(std::nearbyint((unsigned short)0)), double>::value), "");
1300     static_assert((std::is_same<decltype(std::nearbyint((int)0)), double>::value), "");
1301     static_assert((std::is_same<decltype(std::nearbyint((unsigned int)0)), double>::value), "");
1302     static_assert((std::is_same<decltype(std::nearbyint((long)0)), double>::value), "");
1303     static_assert((std::is_same<decltype(std::nearbyint((unsigned long)0)), double>::value), "");
1304     static_assert((std::is_same<decltype(std::nearbyint((long long)0)), double>::value), "");
1305     static_assert((std::is_same<decltype(std::nearbyint((unsigned long long)0)), double>::value), "");
1306     static_assert((std::is_same<decltype(std::nearbyint((double)0)), double>::value), "");
1307     static_assert((std::is_same<decltype(std::nearbyint((long double)0)), long double>::value), "");
1308     static_assert((std::is_same<decltype(std::nearbyintf(0)), float>::value), "");
1309     static_assert((std::is_same<decltype(std::nearbyintl(0)), long double>::value), "");
1310     static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
1311     assert(std::nearbyint(1) == 1);
1312 }
1313 
1314 void test_nextafter()
1315 {
1316     static_assert((std::is_same<decltype(std::nextafter((float)0, (float)0)), float>::value), "");
1317     static_assert((std::is_same<decltype(std::nextafter((bool)0, (float)0)), double>::value), "");
1318     static_assert((std::is_same<decltype(std::nextafter((unsigned short)0, (double)0)), double>::value), "");
1319     static_assert((std::is_same<decltype(std::nextafter((int)0, (long double)0)), long double>::value), "");
1320     static_assert((std::is_same<decltype(std::nextafter((float)0, (unsigned int)0)), double>::value), "");
1321     static_assert((std::is_same<decltype(std::nextafter((double)0, (long)0)), double>::value), "");
1322     static_assert((std::is_same<decltype(std::nextafter((long double)0, (unsigned long)0)), long double>::value), "");
1323     static_assert((std::is_same<decltype(std::nextafter((int)0, (long long)0)), double>::value), "");
1324     static_assert((std::is_same<decltype(std::nextafter((int)0, (unsigned long long)0)), double>::value), "");
1325     static_assert((std::is_same<decltype(std::nextafter((double)0, (double)0)), double>::value), "");
1326     static_assert((std::is_same<decltype(std::nextafter((long double)0, (long double)0)), long double>::value), "");
1327     static_assert((std::is_same<decltype(std::nextafter((float)0, (double)0)), double>::value), "");
1328     static_assert((std::is_same<decltype(std::nextafter((float)0, (long double)0)), long double>::value), "");
1329     static_assert((std::is_same<decltype(std::nextafter((double)0, (long double)0)), long double>::value), "");
1330     static_assert((std::is_same<decltype(std::nextafterf(0,0)), float>::value), "");
1331     static_assert((std::is_same<decltype(std::nextafterl(0,0)), long double>::value), "");
1332     static_assert((std::is_same<decltype(std::nextafter((int)0, (int)0)), double>::value), "");
1333     static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1334     assert(std::nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
1335 }
1336 
1337 void test_nexttoward()
1338 {
1339     static_assert((std::is_same<decltype(std::nexttoward((float)0, (long double)0)), float>::value), "");
1340     static_assert((std::is_same<decltype(std::nexttoward((bool)0, (long double)0)), double>::value), "");
1341     static_assert((std::is_same<decltype(std::nexttoward((unsigned short)0, (long double)0)), double>::value), "");
1342     static_assert((std::is_same<decltype(std::nexttoward((int)0, (long double)0)), double>::value), "");
1343     static_assert((std::is_same<decltype(std::nexttoward((unsigned int)0, (long double)0)), double>::value), "");
1344     static_assert((std::is_same<decltype(std::nexttoward((long)0, (long double)0)), double>::value), "");
1345     static_assert((std::is_same<decltype(std::nexttoward((unsigned long)0, (long double)0)), double>::value), "");
1346     static_assert((std::is_same<decltype(std::nexttoward((long long)0, (long double)0)), double>::value), "");
1347     static_assert((std::is_same<decltype(std::nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
1348     static_assert((std::is_same<decltype(std::nexttoward((double)0, (long double)0)), double>::value), "");
1349     static_assert((std::is_same<decltype(std::nexttoward((long double)0, (long double)0)), long double>::value), "");
1350     static_assert((std::is_same<decltype(std::nexttowardf(0, (long double)0)), float>::value), "");
1351     static_assert((std::is_same<decltype(std::nexttowardl(0, (long double)0)), long double>::value), "");
1352     static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1353     assert(std::nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
1354 }
1355 
1356 void test_remainder()
1357 {
1358     static_assert((std::is_same<decltype(std::remainder((float)0, (float)0)), float>::value), "");
1359     static_assert((std::is_same<decltype(std::remainder((bool)0, (float)0)), double>::value), "");
1360     static_assert((std::is_same<decltype(std::remainder((unsigned short)0, (double)0)), double>::value), "");
1361     static_assert((std::is_same<decltype(std::remainder((int)0, (long double)0)), long double>::value), "");
1362     static_assert((std::is_same<decltype(std::remainder((float)0, (unsigned int)0)), double>::value), "");
1363     static_assert((std::is_same<decltype(std::remainder((double)0, (long)0)), double>::value), "");
1364     static_assert((std::is_same<decltype(std::remainder((long double)0, (unsigned long)0)), long double>::value), "");
1365     static_assert((std::is_same<decltype(std::remainder((int)0, (long long)0)), double>::value), "");
1366     static_assert((std::is_same<decltype(std::remainder((int)0, (unsigned long long)0)), double>::value), "");
1367     static_assert((std::is_same<decltype(std::remainder((double)0, (double)0)), double>::value), "");
1368     static_assert((std::is_same<decltype(std::remainder((long double)0, (long double)0)), long double>::value), "");
1369     static_assert((std::is_same<decltype(std::remainder((float)0, (double)0)), double>::value), "");
1370     static_assert((std::is_same<decltype(std::remainder((float)0, (long double)0)), long double>::value), "");
1371     static_assert((std::is_same<decltype(std::remainder((double)0, (long double)0)), long double>::value), "");
1372     static_assert((std::is_same<decltype(std::remainderf(0,0)), float>::value), "");
1373     static_assert((std::is_same<decltype(std::remainderl(0,0)), long double>::value), "");
1374     static_assert((std::is_same<decltype(std::remainder((int)0, (int)0)), double>::value), "");
1375     static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1376     assert(std::remainder(0.5,1) == 0.5);
1377 }
1378 
1379 void test_remquo()
1380 {
1381     int ip;
1382     static_assert((std::is_same<decltype(std::remquo((float)0, (float)0, &ip)), float>::value), "");
1383     static_assert((std::is_same<decltype(std::remquo((bool)0, (float)0, &ip)), double>::value), "");
1384     static_assert((std::is_same<decltype(std::remquo((unsigned short)0, (double)0, &ip)), double>::value), "");
1385     static_assert((std::is_same<decltype(std::remquo((int)0, (long double)0, &ip)), long double>::value), "");
1386     static_assert((std::is_same<decltype(std::remquo((float)0, (unsigned int)0, &ip)), double>::value), "");
1387     static_assert((std::is_same<decltype(std::remquo((double)0, (long)0, &ip)), double>::value), "");
1388     static_assert((std::is_same<decltype(std::remquo((long double)0, (unsigned long)0, &ip)), long double>::value), "");
1389     static_assert((std::is_same<decltype(std::remquo((int)0, (long long)0, &ip)), double>::value), "");
1390     static_assert((std::is_same<decltype(std::remquo((int)0, (unsigned long long)0, &ip)), double>::value), "");
1391     static_assert((std::is_same<decltype(std::remquo((double)0, (double)0, &ip)), double>::value), "");
1392     static_assert((std::is_same<decltype(std::remquo((long double)0, (long double)0, &ip)), long double>::value), "");
1393     static_assert((std::is_same<decltype(std::remquo((float)0, (double)0, &ip)), double>::value), "");
1394     static_assert((std::is_same<decltype(std::remquo((float)0, (long double)0, &ip)), long double>::value), "");
1395     static_assert((std::is_same<decltype(std::remquo((double)0, (long double)0, &ip)), long double>::value), "");
1396     static_assert((std::is_same<decltype(std::remquof(0,0, &ip)), float>::value), "");
1397     static_assert((std::is_same<decltype(std::remquol(0,0, &ip)), long double>::value), "");
1398     static_assert((std::is_same<decltype(std::remquo((int)0, (int)0, &ip)), double>::value), "");
1399     static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
1400     assert(std::remquo(0.5,1, &ip) == 0.5);
1401 }
1402 
1403 void test_rint()
1404 {
1405     static_assert((std::is_same<decltype(std::rint((float)0)), float>::value), "");
1406     static_assert((std::is_same<decltype(std::rint((bool)0)), double>::value), "");
1407     static_assert((std::is_same<decltype(std::rint((unsigned short)0)), double>::value), "");
1408     static_assert((std::is_same<decltype(std::rint((int)0)), double>::value), "");
1409     static_assert((std::is_same<decltype(std::rint((unsigned int)0)), double>::value), "");
1410     static_assert((std::is_same<decltype(std::rint((long)0)), double>::value), "");
1411     static_assert((std::is_same<decltype(std::rint((unsigned long)0)), double>::value), "");
1412     static_assert((std::is_same<decltype(std::rint((long long)0)), double>::value), "");
1413     static_assert((std::is_same<decltype(std::rint((unsigned long long)0)), double>::value), "");
1414     static_assert((std::is_same<decltype(std::rint((double)0)), double>::value), "");
1415     static_assert((std::is_same<decltype(std::rint((long double)0)), long double>::value), "");
1416     static_assert((std::is_same<decltype(std::rintf(0)), float>::value), "");
1417     static_assert((std::is_same<decltype(std::rintl(0)), long double>::value), "");
1418     static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
1419     assert(std::rint(1) == 1);
1420 }
1421 
1422 void test_round()
1423 {
1424     static_assert((std::is_same<decltype(std::round((float)0)), float>::value), "");
1425     static_assert((std::is_same<decltype(std::round((bool)0)), double>::value), "");
1426     static_assert((std::is_same<decltype(std::round((unsigned short)0)), double>::value), "");
1427     static_assert((std::is_same<decltype(std::round((int)0)), double>::value), "");
1428     static_assert((std::is_same<decltype(std::round((unsigned int)0)), double>::value), "");
1429     static_assert((std::is_same<decltype(std::round((long)0)), double>::value), "");
1430     static_assert((std::is_same<decltype(std::round((unsigned long)0)), double>::value), "");
1431     static_assert((std::is_same<decltype(std::round((long long)0)), double>::value), "");
1432     static_assert((std::is_same<decltype(std::round((unsigned long long)0)), double>::value), "");
1433     static_assert((std::is_same<decltype(std::round((double)0)), double>::value), "");
1434     static_assert((std::is_same<decltype(std::round((long double)0)), long double>::value), "");
1435     static_assert((std::is_same<decltype(std::roundf(0)), float>::value), "");
1436     static_assert((std::is_same<decltype(std::roundl(0)), long double>::value), "");
1437     static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
1438     assert(std::round(1) == 1);
1439 }
1440 
1441 void test_scalbln()
1442 {
1443     static_assert((std::is_same<decltype(std::scalbln((float)0, (long)0)), float>::value), "");
1444     static_assert((std::is_same<decltype(std::scalbln((bool)0, (long)0)), double>::value), "");
1445     static_assert((std::is_same<decltype(std::scalbln((unsigned short)0, (long)0)), double>::value), "");
1446     static_assert((std::is_same<decltype(std::scalbln((int)0, (long)0)), double>::value), "");
1447     static_assert((std::is_same<decltype(std::scalbln((unsigned int)0, (long)0)), double>::value), "");
1448     static_assert((std::is_same<decltype(std::scalbln((long)0, (long)0)), double>::value), "");
1449     static_assert((std::is_same<decltype(std::scalbln((unsigned long)0, (long)0)), double>::value), "");
1450     static_assert((std::is_same<decltype(std::scalbln((long long)0, (long)0)), double>::value), "");
1451     static_assert((std::is_same<decltype(std::scalbln((unsigned long long)0, (long)0)), double>::value), "");
1452     static_assert((std::is_same<decltype(std::scalbln((double)0, (long)0)), double>::value), "");
1453     static_assert((std::is_same<decltype(std::scalbln((long double)0, (long)0)), long double>::value), "");
1454     static_assert((std::is_same<decltype(std::scalblnf(0, (long)0)), float>::value), "");
1455     static_assert((std::is_same<decltype(std::scalblnl(0, (long)0)), long double>::value), "");
1456     static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1457     assert(std::scalbln(1, 1) == 2);
1458 }
1459 
1460 void test_scalbn()
1461 {
1462     static_assert((std::is_same<decltype(std::scalbn((float)0, (int)0)), float>::value), "");
1463     static_assert((std::is_same<decltype(std::scalbn((bool)0, (int)0)), double>::value), "");
1464     static_assert((std::is_same<decltype(std::scalbn((unsigned short)0, (int)0)), double>::value), "");
1465     static_assert((std::is_same<decltype(std::scalbn((int)0, (int)0)), double>::value), "");
1466     static_assert((std::is_same<decltype(std::scalbn((unsigned int)0, (int)0)), double>::value), "");
1467     static_assert((std::is_same<decltype(std::scalbn((long)0, (int)0)), double>::value), "");
1468     static_assert((std::is_same<decltype(std::scalbn((unsigned long)0, (int)0)), double>::value), "");
1469     static_assert((std::is_same<decltype(std::scalbn((long long)0, (int)0)), double>::value), "");
1470     static_assert((std::is_same<decltype(std::scalbn((unsigned long long)0, (int)0)), double>::value), "");
1471     static_assert((std::is_same<decltype(std::scalbn((double)0, (int)0)), double>::value), "");
1472     static_assert((std::is_same<decltype(std::scalbn((long double)0, (int)0)), long double>::value), "");
1473     static_assert((std::is_same<decltype(std::scalbnf(0, (int)0)), float>::value), "");
1474     static_assert((std::is_same<decltype(std::scalbnl(0, (int)0)), long double>::value), "");
1475     static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1476     assert(std::scalbn(1, 1) == 2);
1477 }
1478 
1479 void test_tgamma()
1480 {
1481     static_assert((std::is_same<decltype(std::tgamma((float)0)), float>::value), "");
1482     static_assert((std::is_same<decltype(std::tgamma((bool)0)), double>::value), "");
1483     static_assert((std::is_same<decltype(std::tgamma((unsigned short)0)), double>::value), "");
1484     static_assert((std::is_same<decltype(std::tgamma((int)0)), double>::value), "");
1485     static_assert((std::is_same<decltype(std::tgamma((unsigned int)0)), double>::value), "");
1486     static_assert((std::is_same<decltype(std::tgamma((long)0)), double>::value), "");
1487     static_assert((std::is_same<decltype(std::tgamma((unsigned long)0)), double>::value), "");
1488     static_assert((std::is_same<decltype(std::tgamma((long long)0)), double>::value), "");
1489     static_assert((std::is_same<decltype(std::tgamma((unsigned long long)0)), double>::value), "");
1490     static_assert((std::is_same<decltype(std::tgamma((double)0)), double>::value), "");
1491     static_assert((std::is_same<decltype(std::tgamma((long double)0)), long double>::value), "");
1492     static_assert((std::is_same<decltype(std::tgammaf(0)), float>::value), "");
1493     static_assert((std::is_same<decltype(std::tgammal(0)), long double>::value), "");
1494     static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
1495     assert(std::tgamma(1) == 1);
1496 }
1497 
1498 void test_trunc()
1499 {
1500     static_assert((std::is_same<decltype(std::trunc((float)0)), float>::value), "");
1501     static_assert((std::is_same<decltype(std::trunc((bool)0)), double>::value), "");
1502     static_assert((std::is_same<decltype(std::trunc((unsigned short)0)), double>::value), "");
1503     static_assert((std::is_same<decltype(std::trunc((int)0)), double>::value), "");
1504     static_assert((std::is_same<decltype(std::trunc((unsigned int)0)), double>::value), "");
1505     static_assert((std::is_same<decltype(std::trunc((long)0)), double>::value), "");
1506     static_assert((std::is_same<decltype(std::trunc((unsigned long)0)), double>::value), "");
1507     static_assert((std::is_same<decltype(std::trunc((long long)0)), double>::value), "");
1508     static_assert((std::is_same<decltype(std::trunc((unsigned long long)0)), double>::value), "");
1509     static_assert((std::is_same<decltype(std::trunc((double)0)), double>::value), "");
1510     static_assert((std::is_same<decltype(std::trunc((long double)0)), long double>::value), "");
1511     static_assert((std::is_same<decltype(std::truncf(0)), float>::value), "");
1512     static_assert((std::is_same<decltype(std::truncl(0)), long double>::value), "");
1513     static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
1514     assert(std::trunc(1) == 1);
1515 }
1516 
1517 int main()
1518 {
1519     test_abs();
1520     test_acos();
1521     test_asin();
1522     test_atan();
1523     test_atan2();
1524     test_ceil();
1525     test_cos();
1526     test_cosh();
1527     test_exp();
1528     test_fabs();
1529     test_floor();
1530     test_fmod();
1531     test_frexp();
1532     test_ldexp();
1533     test_log();
1534     test_log10();
1535     test_modf();
1536     test_pow();
1537     test_sin();
1538     test_sinh();
1539     test_sqrt();
1540     test_tan();
1541     test_tanh();
1542     test_signbit();
1543     test_fpclassify();
1544     test_isfinite();
1545     test_isnormal();
1546     test_isgreater();
1547     test_isgreaterequal();
1548     test_isinf();
1549     test_isless();
1550     test_islessequal();
1551     test_islessgreater();
1552     test_isnan();
1553     test_isunordered();
1554     test_acosh();
1555     test_asinh();
1556     test_atanh();
1557     test_cbrt();
1558     test_copysign();
1559     test_erf();
1560     test_erfc();
1561     test_exp2();
1562     test_expm1();
1563     test_fdim();
1564     test_fma();
1565     test_fmax();
1566     test_fmin();
1567     test_hypot();
1568     test_ilogb();
1569     test_lgamma();
1570     test_llrint();
1571     test_llround();
1572     test_log1p();
1573     test_log2();
1574     test_logb();
1575     test_lrint();
1576     test_lround();
1577     test_nan();
1578     test_nearbyint();
1579     test_nextafter();
1580     test_nexttoward();
1581     test_remainder();
1582     test_remquo();
1583     test_rint();
1584     test_round();
1585     test_scalbln();
1586     test_scalbn();
1587     test_tgamma();
1588     test_trunc();
1589 }
1590