xref: /llvm-project/libcxx/test/std/numerics/c.math/cmath.pass.cpp (revision d04c6851681bc9b89ba98c1644cd62d7fb719ac2) 
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 <type_traits>
14 #include <cassert>
15 
16 #include "hexfloat.h"
17 
18 // convertible to int/float/double/etc
19 template <class T, int N=0>
20 struct Value {
21     operator T () { return T(N); }
22 };
23 
24 // See PR21083
25 // Ambiguous is a user-defined type that defines its own overloads of cmath
26 // functions. When the std overloads are candidates too (by using or adl),
27 // they should not interfere.
28 struct Ambiguous : std::true_type { // ADL
29     operator float () { return 0.f; }
30     operator double () { return 0.; }
31 };
32 Ambiguous abs(Ambiguous){ return Ambiguous(); }
33 Ambiguous acos(Ambiguous){ return Ambiguous(); }
34 Ambiguous asin(Ambiguous){ return Ambiguous(); }
35 Ambiguous atan(Ambiguous){ return Ambiguous(); }
36 Ambiguous atan2(Ambiguous, Ambiguous){ return Ambiguous(); }
37 Ambiguous ceil(Ambiguous){ return Ambiguous(); }
38 Ambiguous cos(Ambiguous){ return Ambiguous(); }
39 Ambiguous cosh(Ambiguous){ return Ambiguous(); }
40 Ambiguous exp(Ambiguous){ return Ambiguous(); }
41 Ambiguous fabs(Ambiguous){ return Ambiguous(); }
42 Ambiguous floor(Ambiguous){ return Ambiguous(); }
43 Ambiguous fmod(Ambiguous, Ambiguous){ return Ambiguous(); }
44 Ambiguous frexp(Ambiguous, int*){ return Ambiguous(); }
45 Ambiguous ldexp(Ambiguous, int){ return Ambiguous(); }
46 Ambiguous log(Ambiguous){ return Ambiguous(); }
47 Ambiguous log10(Ambiguous){ return Ambiguous(); }
48 Ambiguous modf(Ambiguous, Ambiguous*){ return Ambiguous(); }
49 Ambiguous pow(Ambiguous, Ambiguous){ return Ambiguous(); }
50 Ambiguous sin(Ambiguous){ return Ambiguous(); }
51 Ambiguous sinh(Ambiguous){ return Ambiguous(); }
52 Ambiguous sqrt(Ambiguous){ return Ambiguous(); }
53 Ambiguous tan(Ambiguous){ return Ambiguous(); }
54 Ambiguous tanh(Ambiguous){ return Ambiguous(); }
55 Ambiguous signbit(Ambiguous){ return Ambiguous(); }
56 Ambiguous fpclassify(Ambiguous){ return Ambiguous(); }
57 Ambiguous isfinite(Ambiguous){ return Ambiguous(); }
58 Ambiguous isnormal(Ambiguous){ return Ambiguous(); }
59 Ambiguous isgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
60 Ambiguous isgreaterequal(Ambiguous, Ambiguous){ return Ambiguous(); }
61 Ambiguous isless(Ambiguous, Ambiguous){ return Ambiguous(); }
62 Ambiguous islessequal(Ambiguous, Ambiguous){ return Ambiguous(); }
63 Ambiguous islessgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
64 Ambiguous isunordered(Ambiguous, Ambiguous){ return Ambiguous(); }
65 Ambiguous acosh(Ambiguous){ return Ambiguous(); }
66 Ambiguous asinh(Ambiguous){ return Ambiguous(); }
67 Ambiguous atanh(Ambiguous){ return Ambiguous(); }
68 Ambiguous cbrt(Ambiguous){ return Ambiguous(); }
69 Ambiguous copysign(Ambiguous, Ambiguous){ return Ambiguous(); }
70 Ambiguous erf(Ambiguous){ return Ambiguous(); }
71 Ambiguous erfc(Ambiguous){ return Ambiguous(); }
72 Ambiguous exp2(Ambiguous){ return Ambiguous(); }
73 Ambiguous expm1(Ambiguous){ return Ambiguous(); }
74 Ambiguous fdim(Ambiguous, Ambiguous){ return Ambiguous(); }
75 Ambiguous fma(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
76 Ambiguous fmax(Ambiguous, Ambiguous){ return Ambiguous(); }
77 Ambiguous fmin(Ambiguous, Ambiguous){ return Ambiguous(); }
78 Ambiguous hypot(Ambiguous, Ambiguous){ return Ambiguous(); }
79 Ambiguous hypot(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
80 Ambiguous ilogb(Ambiguous){ return Ambiguous(); }
81 Ambiguous lgamma(Ambiguous){ return Ambiguous(); }
82 Ambiguous llrint(Ambiguous){ return Ambiguous(); }
83 Ambiguous llround(Ambiguous){ return Ambiguous(); }
84 Ambiguous log1p(Ambiguous){ return Ambiguous(); }
85 Ambiguous log2(Ambiguous){ return Ambiguous(); }
86 Ambiguous logb(Ambiguous){ return Ambiguous(); }
87 Ambiguous lrint(Ambiguous){ return Ambiguous(); }
88 Ambiguous lround(Ambiguous){ return Ambiguous(); }
89 Ambiguous nearbyint(Ambiguous){ return Ambiguous(); }
90 Ambiguous nextafter(Ambiguous, Ambiguous){ return Ambiguous(); }
91 Ambiguous nexttoward(Ambiguous, Ambiguous){ return Ambiguous(); }
92 Ambiguous remainder(Ambiguous, Ambiguous){ return Ambiguous(); }
93 Ambiguous remquo(Ambiguous, Ambiguous, int*){ return Ambiguous(); }
94 Ambiguous rint(Ambiguous){ return Ambiguous(); }
95 Ambiguous round(Ambiguous){ return Ambiguous(); }
96 Ambiguous scalbln(Ambiguous, Ambiguous){ return Ambiguous(); }
97 Ambiguous scalbn(Ambiguous, Ambiguous){ return Ambiguous(); }
98 Ambiguous tgamma(Ambiguous){ return Ambiguous(); }
99 Ambiguous trunc(Ambiguous){ return Ambiguous(); }
100 
101 void test_abs()
102 {
103     static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
104     static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
105     static_assert((std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
106     static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value), "");
107     assert(std::abs(-1.) == 1);
108 }
109 
110 void test_acos()
111 {
112     static_assert((std::is_same<decltype(std::acos((float)0)), float>::value), "");
113     static_assert((std::is_same<decltype(std::acos((bool)0)), double>::value), "");
114     static_assert((std::is_same<decltype(std::acos((unsigned short)0)), double>::value), "");
115     static_assert((std::is_same<decltype(std::acos((int)0)), double>::value), "");
116     static_assert((std::is_same<decltype(std::acos((unsigned int)0)), double>::value), "");
117     static_assert((std::is_same<decltype(std::acos((long)0)), double>::value), "");
118     static_assert((std::is_same<decltype(std::acos((unsigned long)0)), double>::value), "");
119     static_assert((std::is_same<decltype(std::acos((long long)0)), double>::value), "");
120     static_assert((std::is_same<decltype(std::acos((unsigned long long)0)), double>::value), "");
121     static_assert((std::is_same<decltype(std::acos((double)0)), double>::value), "");
122     static_assert((std::is_same<decltype(std::acos((long double)0)), long double>::value), "");
123     static_assert((std::is_same<decltype(std::acosf(0)), float>::value), "");
124     static_assert((std::is_same<decltype(std::acosl(0)), long double>::value), "");
125     static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
126     assert(std::acos(1) == 0);
127 }
128 
129 void test_asin()
130 {
131     static_assert((std::is_same<decltype(std::asin((float)0)), float>::value), "");
132     static_assert((std::is_same<decltype(std::asin((bool)0)), double>::value), "");
133     static_assert((std::is_same<decltype(std::asin((unsigned short)0)), double>::value), "");
134     static_assert((std::is_same<decltype(std::asin((int)0)), double>::value), "");
135     static_assert((std::is_same<decltype(std::asin((unsigned int)0)), double>::value), "");
136     static_assert((std::is_same<decltype(std::asin((long)0)), double>::value), "");
137     static_assert((std::is_same<decltype(std::asin((unsigned long)0)), double>::value), "");
138     static_assert((std::is_same<decltype(std::asin((long long)0)), double>::value), "");
139     static_assert((std::is_same<decltype(std::asin((unsigned long long)0)), double>::value), "");
140     static_assert((std::is_same<decltype(std::asin((double)0)), double>::value), "");
141     static_assert((std::is_same<decltype(std::asin((long double)0)), long double>::value), "");
142     static_assert((std::is_same<decltype(std::asinf(0)), float>::value), "");
143     static_assert((std::is_same<decltype(std::asinl(0)), long double>::value), "");
144     static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
145     assert(std::asin(0) == 0);
146 }
147 
148 void test_atan()
149 {
150     static_assert((std::is_same<decltype(std::atan((float)0)), float>::value), "");
151     static_assert((std::is_same<decltype(std::atan((bool)0)), double>::value), "");
152     static_assert((std::is_same<decltype(std::atan((unsigned short)0)), double>::value), "");
153     static_assert((std::is_same<decltype(std::atan((int)0)), double>::value), "");
154     static_assert((std::is_same<decltype(std::atan((unsigned int)0)), double>::value), "");
155     static_assert((std::is_same<decltype(std::atan((long)0)), double>::value), "");
156     static_assert((std::is_same<decltype(std::atan((unsigned long)0)), double>::value), "");
157     static_assert((std::is_same<decltype(std::atan((long long)0)), double>::value), "");
158     static_assert((std::is_same<decltype(std::atan((unsigned long long)0)), double>::value), "");
159     static_assert((std::is_same<decltype(std::atan((double)0)), double>::value), "");
160     static_assert((std::is_same<decltype(std::atan((long double)0)), long double>::value), "");
161     static_assert((std::is_same<decltype(std::atanf(0)), float>::value), "");
162     static_assert((std::is_same<decltype(std::atanl(0)), long double>::value), "");
163     static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
164     assert(std::atan(0) == 0);
165 }
166 
167 void test_atan2()
168 {
169     static_assert((std::is_same<decltype(std::atan2((float)0, (float)0)), float>::value), "");
170     static_assert((std::is_same<decltype(std::atan2((bool)0, (float)0)), double>::value), "");
171     static_assert((std::is_same<decltype(std::atan2((unsigned short)0, (double)0)), double>::value), "");
172     static_assert((std::is_same<decltype(std::atan2((int)0, (long double)0)), long double>::value), "");
173     static_assert((std::is_same<decltype(std::atan2((float)0, (unsigned int)0)), double>::value), "");
174     static_assert((std::is_same<decltype(std::atan2((double)0, (long)0)), double>::value), "");
175     static_assert((std::is_same<decltype(std::atan2((long double)0, (unsigned long)0)), long double>::value), "");
176     static_assert((std::is_same<decltype(std::atan2((int)0, (long long)0)), double>::value), "");
177     static_assert((std::is_same<decltype(std::atan2((int)0, (unsigned long long)0)), double>::value), "");
178     static_assert((std::is_same<decltype(std::atan2((double)0, (double)0)), double>::value), "");
179     static_assert((std::is_same<decltype(std::atan2((long double)0, (long double)0)), long double>::value), "");
180     static_assert((std::is_same<decltype(std::atan2((float)0, (double)0)), double>::value), "");
181     static_assert((std::is_same<decltype(std::atan2((float)0, (long double)0)), long double>::value), "");
182     static_assert((std::is_same<decltype(std::atan2((double)0, (long double)0)), long double>::value), "");
183     static_assert((std::is_same<decltype(std::atan2f(0,0)), float>::value), "");
184     static_assert((std::is_same<decltype(std::atan2l(0,0)), long double>::value), "");
185     static_assert((std::is_same<decltype(std::atan2((int)0, (int)0)), double>::value), "");
186     static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
187     assert(std::atan2(0,1) == 0);
188 }
189 
190 void test_ceil()
191 {
192     static_assert((std::is_same<decltype(std::ceil((float)0)), float>::value), "");
193     static_assert((std::is_same<decltype(std::ceil((bool)0)), double>::value), "");
194     static_assert((std::is_same<decltype(std::ceil((unsigned short)0)), double>::value), "");
195     static_assert((std::is_same<decltype(std::ceil((int)0)), double>::value), "");
196     static_assert((std::is_same<decltype(std::ceil((unsigned int)0)), double>::value), "");
197     static_assert((std::is_same<decltype(std::ceil((long)0)), double>::value), "");
198     static_assert((std::is_same<decltype(std::ceil((unsigned long)0)), double>::value), "");
199     static_assert((std::is_same<decltype(std::ceil((long long)0)), double>::value), "");
200     static_assert((std::is_same<decltype(std::ceil((unsigned long long)0)), double>::value), "");
201     static_assert((std::is_same<decltype(std::ceil((double)0)), double>::value), "");
202     static_assert((std::is_same<decltype(std::ceil((long double)0)), long double>::value), "");
203     static_assert((std::is_same<decltype(std::ceilf(0)), float>::value), "");
204     static_assert((std::is_same<decltype(std::ceill(0)), long double>::value), "");
205     static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
206     assert(std::ceil(0) == 0);
207 }
208 
209 void test_cos()
210 {
211     static_assert((std::is_same<decltype(std::cos((float)0)), float>::value), "");
212     static_assert((std::is_same<decltype(std::cos((bool)0)), double>::value), "");
213     static_assert((std::is_same<decltype(std::cos((unsigned short)0)), double>::value), "");
214     static_assert((std::is_same<decltype(std::cos((int)0)), double>::value), "");
215     static_assert((std::is_same<decltype(std::cos((unsigned int)0)), double>::value), "");
216     static_assert((std::is_same<decltype(std::cos((long)0)), double>::value), "");
217     static_assert((std::is_same<decltype(std::cos((unsigned long)0)), double>::value), "");
218     static_assert((std::is_same<decltype(std::cos((long long)0)), double>::value), "");
219     static_assert((std::is_same<decltype(std::cos((unsigned long long)0)), double>::value), "");
220     static_assert((std::is_same<decltype(std::cos((double)0)), double>::value), "");
221     static_assert((std::is_same<decltype(std::cos((long double)0)), long double>::value), "");
222     static_assert((std::is_same<decltype(std::cosf(0)), float>::value), "");
223     static_assert((std::is_same<decltype(std::cosl(0)), long double>::value), "");
224     static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
225     assert(std::cos(0) == 1);
226 }
227 
228 void test_cosh()
229 {
230     static_assert((std::is_same<decltype(std::cosh((float)0)), float>::value), "");
231     static_assert((std::is_same<decltype(std::cosh((bool)0)), double>::value), "");
232     static_assert((std::is_same<decltype(std::cosh((unsigned short)0)), double>::value), "");
233     static_assert((std::is_same<decltype(std::cosh((int)0)), double>::value), "");
234     static_assert((std::is_same<decltype(std::cosh((unsigned int)0)), double>::value), "");
235     static_assert((std::is_same<decltype(std::cosh((long)0)), double>::value), "");
236     static_assert((std::is_same<decltype(std::cosh((unsigned long)0)), double>::value), "");
237     static_assert((std::is_same<decltype(std::cosh((long long)0)), double>::value), "");
238     static_assert((std::is_same<decltype(std::cosh((unsigned long long)0)), double>::value), "");
239     static_assert((std::is_same<decltype(std::cosh((double)0)), double>::value), "");
240     static_assert((std::is_same<decltype(std::cosh((long double)0)), long double>::value), "");
241     static_assert((std::is_same<decltype(std::coshf(0)), float>::value), "");
242     static_assert((std::is_same<decltype(std::coshl(0)), long double>::value), "");
243     static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
244     assert(std::cosh(0) == 1);
245 }
246 
247 void test_exp()
248 {
249     static_assert((std::is_same<decltype(std::exp((float)0)), float>::value), "");
250     static_assert((std::is_same<decltype(std::exp((bool)0)), double>::value), "");
251     static_assert((std::is_same<decltype(std::exp((unsigned short)0)), double>::value), "");
252     static_assert((std::is_same<decltype(std::exp((int)0)), double>::value), "");
253     static_assert((std::is_same<decltype(std::exp((unsigned int)0)), double>::value), "");
254     static_assert((std::is_same<decltype(std::exp((long)0)), double>::value), "");
255     static_assert((std::is_same<decltype(std::exp((unsigned long)0)), double>::value), "");
256     static_assert((std::is_same<decltype(std::exp((long long)0)), double>::value), "");
257     static_assert((std::is_same<decltype(std::exp((unsigned long long)0)), double>::value), "");
258     static_assert((std::is_same<decltype(std::exp((double)0)), double>::value), "");
259     static_assert((std::is_same<decltype(std::exp((long double)0)), long double>::value), "");
260     static_assert((std::is_same<decltype(std::expf(0)), float>::value), "");
261     static_assert((std::is_same<decltype(std::expl(0)), long double>::value), "");
262     static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
263     assert(std::exp(0) == 1);
264 }
265 
266 void test_fabs()
267 {
268     static_assert((std::is_same<decltype(std::fabs((float)0)), float>::value), "");
269     static_assert((std::is_same<decltype(std::fabs((bool)0)), double>::value), "");
270     static_assert((std::is_same<decltype(std::fabs((unsigned short)0)), double>::value), "");
271     static_assert((std::is_same<decltype(std::fabs((int)0)), double>::value), "");
272     static_assert((std::is_same<decltype(std::fabs((unsigned int)0)), double>::value), "");
273     static_assert((std::is_same<decltype(std::fabs((long)0)), double>::value), "");
274     static_assert((std::is_same<decltype(std::fabs((unsigned long)0)), double>::value), "");
275     static_assert((std::is_same<decltype(std::fabs((long long)0)), double>::value), "");
276     static_assert((std::is_same<decltype(std::fabs((unsigned long long)0)), double>::value), "");
277     static_assert((std::is_same<decltype(std::fabs((double)0)), double>::value), "");
278     static_assert((std::is_same<decltype(std::fabs((long double)0)), long double>::value), "");
279     static_assert((std::is_same<decltype(std::fabsf(0.0f)), float>::value), "");
280     static_assert((std::is_same<decltype(std::fabsl(0.0L)), long double>::value), "");
281     static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
282     assert(std::fabs(-1) == 1);
283 }
284 
285 void test_floor()
286 {
287     static_assert((std::is_same<decltype(std::floor((float)0)), float>::value), "");
288     static_assert((std::is_same<decltype(std::floor((bool)0)), double>::value), "");
289     static_assert((std::is_same<decltype(std::floor((unsigned short)0)), double>::value), "");
290     static_assert((std::is_same<decltype(std::floor((int)0)), double>::value), "");
291     static_assert((std::is_same<decltype(std::floor((unsigned int)0)), double>::value), "");
292     static_assert((std::is_same<decltype(std::floor((long)0)), double>::value), "");
293     static_assert((std::is_same<decltype(std::floor((unsigned long)0)), double>::value), "");
294     static_assert((std::is_same<decltype(std::floor((long long)0)), double>::value), "");
295     static_assert((std::is_same<decltype(std::floor((unsigned long long)0)), double>::value), "");
296     static_assert((std::is_same<decltype(std::floor((double)0)), double>::value), "");
297     static_assert((std::is_same<decltype(std::floor((long double)0)), long double>::value), "");
298     static_assert((std::is_same<decltype(std::floorf(0)), float>::value), "");
299     static_assert((std::is_same<decltype(std::floorl(0)), long double>::value), "");
300     static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
301     assert(std::floor(1) == 1);
302 }
303 
304 void test_fmod()
305 {
306     static_assert((std::is_same<decltype(std::fmod((float)0, (float)0)), float>::value), "");
307     static_assert((std::is_same<decltype(std::fmod((bool)0, (float)0)), double>::value), "");
308     static_assert((std::is_same<decltype(std::fmod((unsigned short)0, (double)0)), double>::value), "");
309     static_assert((std::is_same<decltype(std::fmod((int)0, (long double)0)), long double>::value), "");
310     static_assert((std::is_same<decltype(std::fmod((float)0, (unsigned int)0)), double>::value), "");
311     static_assert((std::is_same<decltype(std::fmod((double)0, (long)0)), double>::value), "");
312     static_assert((std::is_same<decltype(std::fmod((long double)0, (unsigned long)0)), long double>::value), "");
313     static_assert((std::is_same<decltype(std::fmod((int)0, (long long)0)), double>::value), "");
314     static_assert((std::is_same<decltype(std::fmod((int)0, (unsigned long long)0)), double>::value), "");
315     static_assert((std::is_same<decltype(std::fmod((double)0, (double)0)), double>::value), "");
316     static_assert((std::is_same<decltype(std::fmod((long double)0, (long double)0)), long double>::value), "");
317     static_assert((std::is_same<decltype(std::fmod((float)0, (double)0)), double>::value), "");
318     static_assert((std::is_same<decltype(std::fmod((float)0, (long double)0)), long double>::value), "");
319     static_assert((std::is_same<decltype(std::fmod((double)0, (long double)0)), long double>::value), "");
320     static_assert((std::is_same<decltype(std::fmodf(0,0)), float>::value), "");
321     static_assert((std::is_same<decltype(std::fmodl(0,0)), long double>::value), "");
322     static_assert((std::is_same<decltype(std::fmod((int)0, (int)0)), double>::value), "");
323     static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
324     assert(std::fmod(1.5,1) == .5);
325 }
326 
327 void test_frexp()
328 {
329     int ip;
330     static_assert((std::is_same<decltype(std::frexp((float)0, &ip)), float>::value), "");
331     static_assert((std::is_same<decltype(std::frexp((bool)0, &ip)), double>::value), "");
332     static_assert((std::is_same<decltype(std::frexp((unsigned short)0, &ip)), double>::value), "");
333     static_assert((std::is_same<decltype(std::frexp((int)0, &ip)), double>::value), "");
334     static_assert((std::is_same<decltype(std::frexp((unsigned int)0, &ip)), double>::value), "");
335     static_assert((std::is_same<decltype(std::frexp((long)0, &ip)), double>::value), "");
336     static_assert((std::is_same<decltype(std::frexp((unsigned long)0, &ip)), double>::value), "");
337     static_assert((std::is_same<decltype(std::frexp((long long)0, &ip)), double>::value), "");
338     static_assert((std::is_same<decltype(std::frexp((unsigned long long)0, &ip)), double>::value), "");
339     static_assert((std::is_same<decltype(std::frexp((double)0, &ip)), double>::value), "");
340     static_assert((std::is_same<decltype(std::frexp((long double)0, &ip)), long double>::value), "");
341     static_assert((std::is_same<decltype(std::frexpf(0, &ip)), float>::value), "");
342     static_assert((std::is_same<decltype(std::frexpl(0, &ip)), long double>::value), "");
343     static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
344     assert(std::frexp(0, &ip) == 0);
345 }
346 
347 void test_ldexp()
348 {
349     int ip = 1;
350     static_assert((std::is_same<decltype(std::ldexp((float)0, ip)), float>::value), "");
351     static_assert((std::is_same<decltype(std::ldexp((bool)0, ip)), double>::value), "");
352     static_assert((std::is_same<decltype(std::ldexp((unsigned short)0, ip)), double>::value), "");
353     static_assert((std::is_same<decltype(std::ldexp((int)0, ip)), double>::value), "");
354     static_assert((std::is_same<decltype(std::ldexp((unsigned int)0, ip)), double>::value), "");
355     static_assert((std::is_same<decltype(std::ldexp((long)0, ip)), double>::value), "");
356     static_assert((std::is_same<decltype(std::ldexp((unsigned long)0, ip)), double>::value), "");
357     static_assert((std::is_same<decltype(std::ldexp((long long)0, ip)), double>::value), "");
358     static_assert((std::is_same<decltype(std::ldexp((unsigned long long)0, ip)), double>::value), "");
359     static_assert((std::is_same<decltype(std::ldexp((double)0, ip)), double>::value), "");
360     static_assert((std::is_same<decltype(std::ldexp((long double)0, ip)), long double>::value), "");
361     static_assert((std::is_same<decltype(std::ldexpf(0, ip)), float>::value), "");
362     static_assert((std::is_same<decltype(std::ldexpl(0, ip)), long double>::value), "");
363     static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
364     assert(std::ldexp(1, ip) == 2);
365 }
366 
367 void test_log()
368 {
369     static_assert((std::is_same<decltype(std::log((float)0)), float>::value), "");
370     static_assert((std::is_same<decltype(std::log((bool)0)), double>::value), "");
371     static_assert((std::is_same<decltype(std::log((unsigned short)0)), double>::value), "");
372     static_assert((std::is_same<decltype(std::log((int)0)), double>::value), "");
373     static_assert((std::is_same<decltype(std::log((unsigned int)0)), double>::value), "");
374     static_assert((std::is_same<decltype(std::log((long)0)), double>::value), "");
375     static_assert((std::is_same<decltype(std::log((unsigned long)0)), double>::value), "");
376     static_assert((std::is_same<decltype(std::log((long long)0)), double>::value), "");
377     static_assert((std::is_same<decltype(std::log((unsigned long long)0)), double>::value), "");
378     static_assert((std::is_same<decltype(std::log((double)0)), double>::value), "");
379     static_assert((std::is_same<decltype(std::log((long double)0)), long double>::value), "");
380     static_assert((std::is_same<decltype(std::logf(0)), float>::value), "");
381     static_assert((std::is_same<decltype(std::logl(0)), long double>::value), "");
382     static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
383     assert(std::log(1) == 0);
384 }
385 
386 void test_log10()
387 {
388     static_assert((std::is_same<decltype(std::log10((float)0)), float>::value), "");
389     static_assert((std::is_same<decltype(std::log10((bool)0)), double>::value), "");
390     static_assert((std::is_same<decltype(std::log10((unsigned short)0)), double>::value), "");
391     static_assert((std::is_same<decltype(std::log10((int)0)), double>::value), "");
392     static_assert((std::is_same<decltype(std::log10((unsigned int)0)), double>::value), "");
393     static_assert((std::is_same<decltype(std::log10((long)0)), double>::value), "");
394     static_assert((std::is_same<decltype(std::log10((unsigned long)0)), double>::value), "");
395     static_assert((std::is_same<decltype(std::log10((long long)0)), double>::value), "");
396     static_assert((std::is_same<decltype(std::log10((unsigned long long)0)), double>::value), "");
397     static_assert((std::is_same<decltype(std::log10((double)0)), double>::value), "");
398     static_assert((std::is_same<decltype(std::log10((long double)0)), long double>::value), "");
399     static_assert((std::is_same<decltype(std::log10f(0)), float>::value), "");
400     static_assert((std::is_same<decltype(std::log10l(0)), long double>::value), "");
401     static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
402     assert(std::log10(1) == 0);
403 }
404 
405 void test_modf()
406 {
407     static_assert((std::is_same<decltype(std::modf((float)0, (float*)0)), float>::value), "");
408     static_assert((std::is_same<decltype(std::modf((double)0, (double*)0)), double>::value), "");
409     static_assert((std::is_same<decltype(std::modf((long double)0, (long double*)0)), long double>::value), "");
410     static_assert((std::is_same<decltype(std::modff(0, (float*)0)), float>::value), "");
411     static_assert((std::is_same<decltype(std::modfl(0, (long double*)0)), long double>::value), "");
412     static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
413     double i;
414     assert(std::modf(1., &i) == 0);
415 }
416 
417 void test_pow()
418 {
419     static_assert((std::is_same<decltype(std::pow((float)0, (float)0)), float>::value), "");
420     static_assert((std::is_same<decltype(std::pow((bool)0, (float)0)), double>::value), "");
421     static_assert((std::is_same<decltype(std::pow((unsigned short)0, (double)0)), double>::value), "");
422     static_assert((std::is_same<decltype(std::pow((int)0, (long double)0)), long double>::value), "");
423     static_assert((std::is_same<decltype(std::pow((float)0, (unsigned int)0)), double>::value), "");
424     static_assert((std::is_same<decltype(std::pow((double)0, (long)0)), double>::value), "");
425     static_assert((std::is_same<decltype(std::pow((long double)0, (unsigned long)0)), long double>::value), "");
426     static_assert((std::is_same<decltype(std::pow((int)0, (long long)0)), double>::value), "");
427     static_assert((std::is_same<decltype(std::pow((int)0, (unsigned long long)0)), double>::value), "");
428     static_assert((std::is_same<decltype(std::pow((double)0, (double)0)), double>::value), "");
429     static_assert((std::is_same<decltype(std::pow((long double)0, (long double)0)), long double>::value), "");
430     static_assert((std::is_same<decltype(std::pow((float)0, (double)0)), double>::value), "");
431     static_assert((std::is_same<decltype(std::pow((float)0, (long double)0)), long double>::value), "");
432     static_assert((std::is_same<decltype(std::pow((double)0, (long double)0)), long double>::value), "");
433     static_assert((std::is_same<decltype(std::powf(0,0)), float>::value), "");
434     static_assert((std::is_same<decltype(std::powl(0,0)), long double>::value), "");
435     static_assert((std::is_same<decltype(std::pow((int)0, (int)0)), double>::value), "");
436 //     static_assert((std::is_same<decltype(std::pow(Value<int>(), (int)0)), double>::value), "");
437 //     static_assert((std::is_same<decltype(std::pow(Value<long double>(), (float)0)), long double>::value), "");
438 //     static_assert((std::is_same<decltype(std::pow((float) 0, Value<float>())), float>::value), "");
439     static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
440     assert(std::pow(1,1) == 1);
441 //     assert(std::pow(Value<int,1>(), Value<float,1>())  == 1);
442 //     assert(std::pow(1.0f, Value<double,1>()) == 1);
443 //     assert(std::pow(1.0, Value<int,1>()) == 1);
444 //     assert(std::pow(Value<long double,1>(), 1LL) == 1);
445 }
446 
447 void test_sin()
448 {
449     static_assert((std::is_same<decltype(std::sin((float)0)), float>::value), "");
450     static_assert((std::is_same<decltype(std::sin((bool)0)), double>::value), "");
451     static_assert((std::is_same<decltype(std::sin((unsigned short)0)), double>::value), "");
452     static_assert((std::is_same<decltype(std::sin((int)0)), double>::value), "");
453     static_assert((std::is_same<decltype(std::sin((unsigned int)0)), double>::value), "");
454     static_assert((std::is_same<decltype(std::sin((long)0)), double>::value), "");
455     static_assert((std::is_same<decltype(std::sin((unsigned long)0)), double>::value), "");
456     static_assert((std::is_same<decltype(std::sin((long long)0)), double>::value), "");
457     static_assert((std::is_same<decltype(std::sin((unsigned long long)0)), double>::value), "");
458     static_assert((std::is_same<decltype(std::sin((double)0)), double>::value), "");
459     static_assert((std::is_same<decltype(std::sin((long double)0)), long double>::value), "");
460     static_assert((std::is_same<decltype(std::sinf(0)), float>::value), "");
461     static_assert((std::is_same<decltype(std::sinl(0)), long double>::value), "");
462     static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
463     assert(std::sin(0) == 0);
464 }
465 
466 void test_sinh()
467 {
468     static_assert((std::is_same<decltype(std::sinh((float)0)), float>::value), "");
469     static_assert((std::is_same<decltype(std::sinh((bool)0)), double>::value), "");
470     static_assert((std::is_same<decltype(std::sinh((unsigned short)0)), double>::value), "");
471     static_assert((std::is_same<decltype(std::sinh((int)0)), double>::value), "");
472     static_assert((std::is_same<decltype(std::sinh((unsigned int)0)), double>::value), "");
473     static_assert((std::is_same<decltype(std::sinh((long)0)), double>::value), "");
474     static_assert((std::is_same<decltype(std::sinh((unsigned long)0)), double>::value), "");
475     static_assert((std::is_same<decltype(std::sinh((long long)0)), double>::value), "");
476     static_assert((std::is_same<decltype(std::sinh((unsigned long long)0)), double>::value), "");
477     static_assert((std::is_same<decltype(std::sinh((double)0)), double>::value), "");
478     static_assert((std::is_same<decltype(std::sinh((long double)0)), long double>::value), "");
479     static_assert((std::is_same<decltype(std::sinhf(0)), float>::value), "");
480     static_assert((std::is_same<decltype(std::sinhl(0)), long double>::value), "");
481     static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
482     assert(std::sinh(0) == 0);
483 }
484 
485 void test_sqrt()
486 {
487     static_assert((std::is_same<decltype(std::sqrt((float)0)), float>::value), "");
488     static_assert((std::is_same<decltype(std::sqrt((bool)0)), double>::value), "");
489     static_assert((std::is_same<decltype(std::sqrt((unsigned short)0)), double>::value), "");
490     static_assert((std::is_same<decltype(std::sqrt((int)0)), double>::value), "");
491     static_assert((std::is_same<decltype(std::sqrt((unsigned int)0)), double>::value), "");
492     static_assert((std::is_same<decltype(std::sqrt((long)0)), double>::value), "");
493     static_assert((std::is_same<decltype(std::sqrt((unsigned long)0)), double>::value), "");
494     static_assert((std::is_same<decltype(std::sqrt((long long)0)), double>::value), "");
495     static_assert((std::is_same<decltype(std::sqrt((unsigned long long)0)), double>::value), "");
496     static_assert((std::is_same<decltype(std::sqrt((double)0)), double>::value), "");
497     static_assert((std::is_same<decltype(std::sqrt((long double)0)), long double>::value), "");
498     static_assert((std::is_same<decltype(std::sqrtf(0)), float>::value), "");
499     static_assert((std::is_same<decltype(std::sqrtl(0)), long double>::value), "");
500     static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
501     assert(std::sqrt(4) == 2);
502 }
503 
504 void test_tan()
505 {
506     static_assert((std::is_same<decltype(std::tan((float)0)), float>::value), "");
507     static_assert((std::is_same<decltype(std::tan((bool)0)), double>::value), "");
508     static_assert((std::is_same<decltype(std::tan((unsigned short)0)), double>::value), "");
509     static_assert((std::is_same<decltype(std::tan((int)0)), double>::value), "");
510     static_assert((std::is_same<decltype(std::tan((unsigned int)0)), double>::value), "");
511     static_assert((std::is_same<decltype(std::tan((long)0)), double>::value), "");
512     static_assert((std::is_same<decltype(std::tan((unsigned long)0)), double>::value), "");
513     static_assert((std::is_same<decltype(std::tan((long long)0)), double>::value), "");
514     static_assert((std::is_same<decltype(std::tan((unsigned long long)0)), double>::value), "");
515     static_assert((std::is_same<decltype(std::tan((double)0)), double>::value), "");
516     static_assert((std::is_same<decltype(std::tan((long double)0)), long double>::value), "");
517     static_assert((std::is_same<decltype(std::tanf(0)), float>::value), "");
518     static_assert((std::is_same<decltype(std::tanl(0)), long double>::value), "");
519     static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
520     assert(std::tan(0) == 0);
521 }
522 
523 void test_tanh()
524 {
525     static_assert((std::is_same<decltype(std::tanh((float)0)), float>::value), "");
526     static_assert((std::is_same<decltype(std::tanh((bool)0)), double>::value), "");
527     static_assert((std::is_same<decltype(std::tanh((unsigned short)0)), double>::value), "");
528     static_assert((std::is_same<decltype(std::tanh((int)0)), double>::value), "");
529     static_assert((std::is_same<decltype(std::tanh((unsigned int)0)), double>::value), "");
530     static_assert((std::is_same<decltype(std::tanh((long)0)), double>::value), "");
531     static_assert((std::is_same<decltype(std::tanh((unsigned long)0)), double>::value), "");
532     static_assert((std::is_same<decltype(std::tanh((long long)0)), double>::value), "");
533     static_assert((std::is_same<decltype(std::tanh((unsigned long long)0)), double>::value), "");
534     static_assert((std::is_same<decltype(std::tanh((double)0)), double>::value), "");
535     static_assert((std::is_same<decltype(std::tanh((long double)0)), long double>::value), "");
536     static_assert((std::is_same<decltype(std::tanhf(0)), float>::value), "");
537     static_assert((std::is_same<decltype(std::tanhl(0)), long double>::value), "");
538     static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
539     assert(std::tanh(0) == 0);
540 }
541 
542 void test_signbit()
543 {
544 #ifdef signbit
545 #error signbit defined
546 #endif
547     static_assert((std::is_same<decltype(std::signbit((float)0)), bool>::value), "");
548     static_assert((std::is_same<decltype(std::signbit((double)0)), bool>::value), "");
549     static_assert((std::is_same<decltype(std::signbit(0)), bool>::value), "");
550     static_assert((std::is_same<decltype(std::signbit((long double)0)), bool>::value), "");
551     static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
552     assert(std::signbit(-1.0) == true);
553 }
554 
555 void test_fpclassify()
556 {
557 #ifdef fpclassify
558 #error fpclassify defined
559 #endif
560     static_assert((std::is_same<decltype(std::fpclassify((float)0)), int>::value), "");
561     static_assert((std::is_same<decltype(std::fpclassify((double)0)), int>::value), "");
562     static_assert((std::is_same<decltype(std::fpclassify(0)), int>::value), "");
563     static_assert((std::is_same<decltype(std::fpclassify((long double)0)), int>::value), "");
564     static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
565     assert(std::fpclassify(-1.0) == FP_NORMAL);
566 }
567 
568 void test_isfinite()
569 {
570 #ifdef isfinite
571 #error isfinite defined
572 #endif
573     static_assert((std::is_same<decltype(std::isfinite((float)0)), bool>::value), "");
574     static_assert((std::is_same<decltype(std::isfinite((double)0)), bool>::value), "");
575     static_assert((std::is_same<decltype(std::isfinite(0)), bool>::value), "");
576     static_assert((std::is_same<decltype(std::isfinite((long double)0)), bool>::value), "");
577     static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
578     assert(std::isfinite(-1.0) == true);
579 }
580 
581 void test_isnormal()
582 {
583 #ifdef isnormal
584 #error isnormal defined
585 #endif
586     static_assert((std::is_same<decltype(std::isnormal((float)0)), bool>::value), "");
587     static_assert((std::is_same<decltype(std::isnormal((double)0)), bool>::value), "");
588     static_assert((std::is_same<decltype(std::isnormal(0)), bool>::value), "");
589     static_assert((std::is_same<decltype(std::isnormal((long double)0)), bool>::value), "");
590     static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
591     assert(std::isnormal(-1.0) == true);
592 }
593 
594 void test_isgreater()
595 {
596 #ifdef isgreater
597 #error isgreater defined
598 #endif
599     static_assert((std::is_same<decltype(std::isgreater((float)0, (float)0)), bool>::value), "");
600     static_assert((std::is_same<decltype(std::isgreater((float)0, (double)0)), bool>::value), "");
601     static_assert((std::is_same<decltype(std::isgreater((float)0, (long double)0)), bool>::value), "");
602     static_assert((std::is_same<decltype(std::isgreater((double)0, (float)0)), bool>::value), "");
603     static_assert((std::is_same<decltype(std::isgreater((double)0, (double)0)), bool>::value), "");
604     static_assert((std::is_same<decltype(std::isgreater(0, (double)0)), bool>::value), "");
605     static_assert((std::is_same<decltype(std::isgreater((double)0, (long double)0)), bool>::value), "");
606     static_assert((std::is_same<decltype(std::isgreater((long double)0, (float)0)), bool>::value), "");
607     static_assert((std::is_same<decltype(std::isgreater((long double)0, (double)0)), bool>::value), "");
608     static_assert((std::is_same<decltype(std::isgreater((long double)0, (long double)0)), bool>::value), "");
609     static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
610     assert(std::isgreater(-1.0, 0.F) == false);
611 }
612 
613 void test_isgreaterequal()
614 {
615 #ifdef isgreaterequal
616 #error isgreaterequal defined
617 #endif
618     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (float)0)), bool>::value), "");
619     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (double)0)), bool>::value), "");
620     static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (long double)0)), bool>::value), "");
621     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (float)0)), bool>::value), "");
622     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (double)0)), bool>::value), "");
623     static_assert((std::is_same<decltype(std::isgreaterequal(0, (double)0)), bool>::value), "");
624     static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (long double)0)), bool>::value), "");
625     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (float)0)), bool>::value), "");
626     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (double)0)), bool>::value), "");
627     static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (long double)0)), bool>::value), "");
628     static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
629     assert(std::isgreaterequal(-1.0, 0.F) == false);
630 }
631 
632 void test_isinf()
633 {
634 #ifdef isinf
635 #error isinf defined
636 #endif
637     static_assert((std::is_same<decltype(std::isinf((float)0)), bool>::value), "");
638 
639     typedef decltype(std::isinf((double)0)) DoubleRetType;
640 #ifndef __linux__
641     static_assert((std::is_same<DoubleRetType, bool>::value), "");
642 #else
643     // GLIBC < 2.26 defines 'isinf(double)' with a return type of 'int' in
644     // all C++ dialects. The test should tolerate this.
645     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
646     static_assert((std::is_same<DoubleRetType, bool>::value
647                 || std::is_same<DoubleRetType, int>::value), "");
648 #endif
649 
650     static_assert((std::is_same<decltype(std::isinf(0)), bool>::value), "");
651     static_assert((std::is_same<decltype(std::isinf((long double)0)), bool>::value), "");
652     assert(std::isinf(-1.0) == false);
653 }
654 
655 void test_isless()
656 {
657 #ifdef isless
658 #error isless defined
659 #endif
660     static_assert((std::is_same<decltype(std::isless((float)0, (float)0)), bool>::value), "");
661     static_assert((std::is_same<decltype(std::isless((float)0, (double)0)), bool>::value), "");
662     static_assert((std::is_same<decltype(std::isless((float)0, (long double)0)), bool>::value), "");
663     static_assert((std::is_same<decltype(std::isless((double)0, (float)0)), bool>::value), "");
664     static_assert((std::is_same<decltype(std::isless((double)0, (double)0)), bool>::value), "");
665     static_assert((std::is_same<decltype(std::isless(0, (double)0)), bool>::value), "");
666     static_assert((std::is_same<decltype(std::isless((double)0, (long double)0)), bool>::value), "");
667     static_assert((std::is_same<decltype(std::isless((long double)0, (float)0)), bool>::value), "");
668     static_assert((std::is_same<decltype(std::isless((long double)0, (double)0)), bool>::value), "");
669     static_assert((std::is_same<decltype(std::isless((long double)0, (long double)0)), bool>::value), "");
670     static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
671     assert(std::isless(-1.0, 0.F) == true);
672 }
673 
674 void test_islessequal()
675 {
676 #ifdef islessequal
677 #error islessequal defined
678 #endif
679     static_assert((std::is_same<decltype(std::islessequal((float)0, (float)0)), bool>::value), "");
680     static_assert((std::is_same<decltype(std::islessequal((float)0, (double)0)), bool>::value), "");
681     static_assert((std::is_same<decltype(std::islessequal((float)0, (long double)0)), bool>::value), "");
682     static_assert((std::is_same<decltype(std::islessequal((double)0, (float)0)), bool>::value), "");
683     static_assert((std::is_same<decltype(std::islessequal((double)0, (double)0)), bool>::value), "");
684     static_assert((std::is_same<decltype(std::islessequal(0, (double)0)), bool>::value), "");
685     static_assert((std::is_same<decltype(std::islessequal((double)0, (long double)0)), bool>::value), "");
686     static_assert((std::is_same<decltype(std::islessequal((long double)0, (float)0)), bool>::value), "");
687     static_assert((std::is_same<decltype(std::islessequal((long double)0, (double)0)), bool>::value), "");
688     static_assert((std::is_same<decltype(std::islessequal((long double)0, (long double)0)), bool>::value), "");
689     static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
690     assert(std::islessequal(-1.0, 0.F) == true);
691 }
692 
693 void test_islessgreater()
694 {
695 #ifdef islessgreater
696 #error islessgreater defined
697 #endif
698     static_assert((std::is_same<decltype(std::islessgreater((float)0, (float)0)), bool>::value), "");
699     static_assert((std::is_same<decltype(std::islessgreater((float)0, (double)0)), bool>::value), "");
700     static_assert((std::is_same<decltype(std::islessgreater((float)0, (long double)0)), bool>::value), "");
701     static_assert((std::is_same<decltype(std::islessgreater((double)0, (float)0)), bool>::value), "");
702     static_assert((std::is_same<decltype(std::islessgreater((double)0, (double)0)), bool>::value), "");
703     static_assert((std::is_same<decltype(std::islessgreater(0, (double)0)), bool>::value), "");
704     static_assert((std::is_same<decltype(std::islessgreater((double)0, (long double)0)), bool>::value), "");
705     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (float)0)), bool>::value), "");
706     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (double)0)), bool>::value), "");
707     static_assert((std::is_same<decltype(std::islessgreater((long double)0, (long double)0)), bool>::value), "");
708     static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
709     assert(std::islessgreater(-1.0, 0.F) == true);
710 }
711 
712 void test_isnan()
713 {
714 #ifdef isnan
715 #error isnan defined
716 #endif
717     static_assert((std::is_same<decltype(std::isnan((float)0)), bool>::value), "");
718 
719     typedef decltype(std::isnan((double)0)) DoubleRetType;
720 #ifndef __linux__
721     static_assert((std::is_same<DoubleRetType, bool>::value), "");
722 #else
723     // GLIBC < 2.26 defines 'isnan(double)' with a return type of 'int' in
724     // all C++ dialects. The test should tolerate this.
725     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
726     static_assert((std::is_same<DoubleRetType, bool>::value
727                 || std::is_same<DoubleRetType, int>::value), "");
728 #endif
729 
730     static_assert((std::is_same<decltype(std::isnan(0)), bool>::value), "");
731     static_assert((std::is_same<decltype(std::isnan((long double)0)), bool>::value), "");
732     assert(std::isnan(-1.0) == false);
733 }
734 
735 void test_isunordered()
736 {
737 #ifdef isunordered
738 #error isunordered defined
739 #endif
740     static_assert((std::is_same<decltype(std::isunordered((float)0, (float)0)), bool>::value), "");
741     static_assert((std::is_same<decltype(std::isunordered((float)0, (double)0)), bool>::value), "");
742     static_assert((std::is_same<decltype(std::isunordered((float)0, (long double)0)), bool>::value), "");
743     static_assert((std::is_same<decltype(std::isunordered((double)0, (float)0)), bool>::value), "");
744     static_assert((std::is_same<decltype(std::isunordered((double)0, (double)0)), bool>::value), "");
745     static_assert((std::is_same<decltype(std::isunordered(0, (double)0)), bool>::value), "");
746     static_assert((std::is_same<decltype(std::isunordered((double)0, (long double)0)), bool>::value), "");
747     static_assert((std::is_same<decltype(std::isunordered((long double)0, (float)0)), bool>::value), "");
748     static_assert((std::is_same<decltype(std::isunordered((long double)0, (double)0)), bool>::value), "");
749     static_assert((std::is_same<decltype(std::isunordered((long double)0, (long double)0)), bool>::value), "");
750     static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
751     assert(std::isunordered(-1.0, 0.F) == false);
752 }
753 
754 void test_acosh()
755 {
756     static_assert((std::is_same<decltype(std::acosh((float)0)), float>::value), "");
757     static_assert((std::is_same<decltype(std::acosh((bool)0)), double>::value), "");
758     static_assert((std::is_same<decltype(std::acosh((unsigned short)0)), double>::value), "");
759     static_assert((std::is_same<decltype(std::acosh((int)0)), double>::value), "");
760     static_assert((std::is_same<decltype(std::acosh((unsigned int)0)), double>::value), "");
761     static_assert((std::is_same<decltype(std::acosh((long)0)), double>::value), "");
762     static_assert((std::is_same<decltype(std::acosh((unsigned long)0)), double>::value), "");
763     static_assert((std::is_same<decltype(std::acosh((long long)0)), double>::value), "");
764     static_assert((std::is_same<decltype(std::acosh((unsigned long long)0)), double>::value), "");
765     static_assert((std::is_same<decltype(std::acosh((double)0)), double>::value), "");
766     static_assert((std::is_same<decltype(std::acosh((long double)0)), long double>::value), "");
767     static_assert((std::is_same<decltype(std::acoshf(0)), float>::value), "");
768     static_assert((std::is_same<decltype(std::acoshl(0)), long double>::value), "");
769     static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
770     assert(std::acosh(1) == 0);
771 }
772 
773 void test_asinh()
774 {
775     static_assert((std::is_same<decltype(std::asinh((float)0)), float>::value), "");
776     static_assert((std::is_same<decltype(std::asinh((bool)0)), double>::value), "");
777     static_assert((std::is_same<decltype(std::asinh((unsigned short)0)), double>::value), "");
778     static_assert((std::is_same<decltype(std::asinh((int)0)), double>::value), "");
779     static_assert((std::is_same<decltype(std::asinh((unsigned int)0)), double>::value), "");
780     static_assert((std::is_same<decltype(std::asinh((long)0)), double>::value), "");
781     static_assert((std::is_same<decltype(std::asinh((unsigned long)0)), double>::value), "");
782     static_assert((std::is_same<decltype(std::asinh((long long)0)), double>::value), "");
783     static_assert((std::is_same<decltype(std::asinh((unsigned long long)0)), double>::value), "");
784     static_assert((std::is_same<decltype(std::asinh((double)0)), double>::value), "");
785     static_assert((std::is_same<decltype(std::asinh((long double)0)), long double>::value), "");
786     static_assert((std::is_same<decltype(std::asinhf(0)), float>::value), "");
787     static_assert((std::is_same<decltype(std::asinhl(0)), long double>::value), "");
788     static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
789     assert(std::asinh(0) == 0);
790 }
791 
792 void test_atanh()
793 {
794     static_assert((std::is_same<decltype(std::atanh((float)0)), float>::value), "");
795     static_assert((std::is_same<decltype(std::atanh((bool)0)), double>::value), "");
796     static_assert((std::is_same<decltype(std::atanh((unsigned short)0)), double>::value), "");
797     static_assert((std::is_same<decltype(std::atanh((int)0)), double>::value), "");
798     static_assert((std::is_same<decltype(std::atanh((unsigned int)0)), double>::value), "");
799     static_assert((std::is_same<decltype(std::atanh((long)0)), double>::value), "");
800     static_assert((std::is_same<decltype(std::atanh((unsigned long)0)), double>::value), "");
801     static_assert((std::is_same<decltype(std::atanh((long long)0)), double>::value), "");
802     static_assert((std::is_same<decltype(std::atanh((unsigned long long)0)), double>::value), "");
803     static_assert((std::is_same<decltype(std::atanh((double)0)), double>::value), "");
804     static_assert((std::is_same<decltype(std::atanh((long double)0)), long double>::value), "");
805     static_assert((std::is_same<decltype(std::atanhf(0)), float>::value), "");
806     static_assert((std::is_same<decltype(std::atanhl(0)), long double>::value), "");
807     static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
808     assert(std::atanh(0) == 0);
809 }
810 
811 void test_cbrt()
812 {
813     static_assert((std::is_same<decltype(std::cbrt((float)0)), float>::value), "");
814     static_assert((std::is_same<decltype(std::cbrt((bool)0)), double>::value), "");
815     static_assert((std::is_same<decltype(std::cbrt((unsigned short)0)), double>::value), "");
816     static_assert((std::is_same<decltype(std::cbrt((int)0)), double>::value), "");
817     static_assert((std::is_same<decltype(std::cbrt((unsigned int)0)), double>::value), "");
818     static_assert((std::is_same<decltype(std::cbrt((long)0)), double>::value), "");
819     static_assert((std::is_same<decltype(std::cbrt((unsigned long)0)), double>::value), "");
820     static_assert((std::is_same<decltype(std::cbrt((long long)0)), double>::value), "");
821     static_assert((std::is_same<decltype(std::cbrt((unsigned long long)0)), double>::value), "");
822     static_assert((std::is_same<decltype(std::cbrt((double)0)), double>::value), "");
823     static_assert((std::is_same<decltype(std::cbrt((long double)0)), long double>::value), "");
824     static_assert((std::is_same<decltype(std::cbrtf(0)), float>::value), "");
825     static_assert((std::is_same<decltype(std::cbrtl(0)), long double>::value), "");
826     static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value), "");
827     assert(std::cbrt(1) == 1);
828 }
829 
830 void test_copysign()
831 {
832     static_assert((std::is_same<decltype(std::copysign((float)0, (float)0)), float>::value), "");
833     static_assert((std::is_same<decltype(std::copysign((bool)0, (float)0)), double>::value), "");
834     static_assert((std::is_same<decltype(std::copysign((unsigned short)0, (double)0)), double>::value), "");
835     static_assert((std::is_same<decltype(std::copysign((int)0, (long double)0)), long double>::value), "");
836     static_assert((std::is_same<decltype(std::copysign((float)0, (unsigned int)0)), double>::value), "");
837     static_assert((std::is_same<decltype(std::copysign((double)0, (long)0)), double>::value), "");
838     static_assert((std::is_same<decltype(std::copysign((long double)0, (unsigned long)0)), long double>::value), "");
839     static_assert((std::is_same<decltype(std::copysign((int)0, (long long)0)), double>::value), "");
840     static_assert((std::is_same<decltype(std::copysign((int)0, (unsigned long long)0)), double>::value), "");
841     static_assert((std::is_same<decltype(std::copysign((double)0, (double)0)), double>::value), "");
842     static_assert((std::is_same<decltype(std::copysign((long double)0, (long double)0)), long double>::value), "");
843     static_assert((std::is_same<decltype(std::copysign((float)0, (double)0)), double>::value), "");
844     static_assert((std::is_same<decltype(std::copysign((float)0, (long double)0)), long double>::value), "");
845     static_assert((std::is_same<decltype(std::copysign((double)0, (long double)0)), long double>::value), "");
846     static_assert((std::is_same<decltype(std::copysignf(0,0)), float>::value), "");
847     static_assert((std::is_same<decltype(std::copysignl(0,0)), long double>::value), "");
848     static_assert((std::is_same<decltype(std::copysign((int)0, (int)0)), double>::value), "");
849     static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
850     assert(std::copysign(1,1) == 1);
851 }
852 
853 void test_erf()
854 {
855     static_assert((std::is_same<decltype(std::erf((float)0)), float>::value), "");
856     static_assert((std::is_same<decltype(std::erf((bool)0)), double>::value), "");
857     static_assert((std::is_same<decltype(std::erf((unsigned short)0)), double>::value), "");
858     static_assert((std::is_same<decltype(std::erf((int)0)), double>::value), "");
859     static_assert((std::is_same<decltype(std::erf((unsigned int)0)), double>::value), "");
860     static_assert((std::is_same<decltype(std::erf((long)0)), double>::value), "");
861     static_assert((std::is_same<decltype(std::erf((unsigned long)0)), double>::value), "");
862     static_assert((std::is_same<decltype(std::erf((long long)0)), double>::value), "");
863     static_assert((std::is_same<decltype(std::erf((unsigned long long)0)), double>::value), "");
864     static_assert((std::is_same<decltype(std::erf((double)0)), double>::value), "");
865     static_assert((std::is_same<decltype(std::erf((long double)0)), long double>::value), "");
866     static_assert((std::is_same<decltype(std::erff(0)), float>::value), "");
867     static_assert((std::is_same<decltype(std::erfl(0)), long double>::value), "");
868     static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
869     assert(std::erf(0) == 0);
870 }
871 
872 void test_erfc()
873 {
874     static_assert((std::is_same<decltype(std::erfc((float)0)), float>::value), "");
875     static_assert((std::is_same<decltype(std::erfc((bool)0)), double>::value), "");
876     static_assert((std::is_same<decltype(std::erfc((unsigned short)0)), double>::value), "");
877     static_assert((std::is_same<decltype(std::erfc((int)0)), double>::value), "");
878     static_assert((std::is_same<decltype(std::erfc((unsigned int)0)), double>::value), "");
879     static_assert((std::is_same<decltype(std::erfc((long)0)), double>::value), "");
880     static_assert((std::is_same<decltype(std::erfc((unsigned long)0)), double>::value), "");
881     static_assert((std::is_same<decltype(std::erfc((long long)0)), double>::value), "");
882     static_assert((std::is_same<decltype(std::erfc((unsigned long long)0)), double>::value), "");
883     static_assert((std::is_same<decltype(std::erfc((double)0)), double>::value), "");
884     static_assert((std::is_same<decltype(std::erfc((long double)0)), long double>::value), "");
885     static_assert((std::is_same<decltype(std::erfcf(0)), float>::value), "");
886     static_assert((std::is_same<decltype(std::erfcl(0)), long double>::value), "");
887     static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
888     assert(std::erfc(0) == 1);
889 }
890 
891 void test_exp2()
892 {
893     static_assert((std::is_same<decltype(std::exp2((float)0)), float>::value), "");
894     static_assert((std::is_same<decltype(std::exp2((bool)0)), double>::value), "");
895     static_assert((std::is_same<decltype(std::exp2((unsigned short)0)), double>::value), "");
896     static_assert((std::is_same<decltype(std::exp2((int)0)), double>::value), "");
897     static_assert((std::is_same<decltype(std::exp2((unsigned int)0)), double>::value), "");
898     static_assert((std::is_same<decltype(std::exp2((long)0)), double>::value), "");
899     static_assert((std::is_same<decltype(std::exp2((unsigned long)0)), double>::value), "");
900     static_assert((std::is_same<decltype(std::exp2((long long)0)), double>::value), "");
901     static_assert((std::is_same<decltype(std::exp2((unsigned long long)0)), double>::value), "");
902     static_assert((std::is_same<decltype(std::exp2((double)0)), double>::value), "");
903     static_assert((std::is_same<decltype(std::exp2((long double)0)), long double>::value), "");
904     static_assert((std::is_same<decltype(std::exp2f(0)), float>::value), "");
905     static_assert((std::is_same<decltype(std::exp2l(0)), long double>::value), "");
906     static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
907     assert(std::exp2(1) == 2);
908 }
909 
910 void test_expm1()
911 {
912     static_assert((std::is_same<decltype(std::expm1((float)0)), float>::value), "");
913     static_assert((std::is_same<decltype(std::expm1((bool)0)), double>::value), "");
914     static_assert((std::is_same<decltype(std::expm1((unsigned short)0)), double>::value), "");
915     static_assert((std::is_same<decltype(std::expm1((int)0)), double>::value), "");
916     static_assert((std::is_same<decltype(std::expm1((unsigned int)0)), double>::value), "");
917     static_assert((std::is_same<decltype(std::expm1((long)0)), double>::value), "");
918     static_assert((std::is_same<decltype(std::expm1((unsigned long)0)), double>::value), "");
919     static_assert((std::is_same<decltype(std::expm1((long long)0)), double>::value), "");
920     static_assert((std::is_same<decltype(std::expm1((unsigned long long)0)), double>::value), "");
921     static_assert((std::is_same<decltype(std::expm1((double)0)), double>::value), "");
922     static_assert((std::is_same<decltype(std::expm1((long double)0)), long double>::value), "");
923     static_assert((std::is_same<decltype(std::expm1f(0)), float>::value), "");
924     static_assert((std::is_same<decltype(std::expm1l(0)), long double>::value), "");
925     static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
926     assert(std::expm1(0) == 0);
927 }
928 
929 void test_fdim()
930 {
931     static_assert((std::is_same<decltype(std::fdim((float)0, (float)0)), float>::value), "");
932     static_assert((std::is_same<decltype(std::fdim((bool)0, (float)0)), double>::value), "");
933     static_assert((std::is_same<decltype(std::fdim((unsigned short)0, (double)0)), double>::value), "");
934     static_assert((std::is_same<decltype(std::fdim((int)0, (long double)0)), long double>::value), "");
935     static_assert((std::is_same<decltype(std::fdim((float)0, (unsigned int)0)), double>::value), "");
936     static_assert((std::is_same<decltype(std::fdim((double)0, (long)0)), double>::value), "");
937     static_assert((std::is_same<decltype(std::fdim((long double)0, (unsigned long)0)), long double>::value), "");
938     static_assert((std::is_same<decltype(std::fdim((int)0, (long long)0)), double>::value), "");
939     static_assert((std::is_same<decltype(std::fdim((int)0, (unsigned long long)0)), double>::value), "");
940     static_assert((std::is_same<decltype(std::fdim((double)0, (double)0)), double>::value), "");
941     static_assert((std::is_same<decltype(std::fdim((long double)0, (long double)0)), long double>::value), "");
942     static_assert((std::is_same<decltype(std::fdim((float)0, (double)0)), double>::value), "");
943     static_assert((std::is_same<decltype(std::fdim((float)0, (long double)0)), long double>::value), "");
944     static_assert((std::is_same<decltype(std::fdim((double)0, (long double)0)), long double>::value), "");
945     static_assert((std::is_same<decltype(std::fdimf(0,0)), float>::value), "");
946     static_assert((std::is_same<decltype(std::fdiml(0,0)), long double>::value), "");
947     static_assert((std::is_same<decltype(std::fdim((int)0, (int)0)), double>::value), "");
948     static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
949     assert(std::fdim(1,0) == 1);
950 }
951 
952 void test_fma()
953 {
954     static_assert((std::is_same<decltype(std::fma((bool)0, (float)0, (float)0)), double>::value), "");
955     static_assert((std::is_same<decltype(std::fma((char)0, (float)0, (float)0)), double>::value), "");
956     static_assert((std::is_same<decltype(std::fma((unsigned)0, (float)0, (float)0)), double>::value), "");
957     static_assert((std::is_same<decltype(std::fma((float)0, (int)0, (float)0)), double>::value), "");
958     static_assert((std::is_same<decltype(std::fma((float)0, (long)0, (float)0)), double>::value), "");
959     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (unsigned long long)0)), double>::value), "");
960     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (double)0)), double>::value), "");
961     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (long double)0)), long double>::value), "");
962     static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (float)0)), float>::value), "");
963 
964     static_assert((std::is_same<decltype(std::fma((bool)0, (double)0, (double)0)), double>::value), "");
965     static_assert((std::is_same<decltype(std::fma((char)0, (double)0, (double)0)), double>::value), "");
966     static_assert((std::is_same<decltype(std::fma((unsigned)0, (double)0, (double)0)), double>::value), "");
967     static_assert((std::is_same<decltype(std::fma((double)0, (int)0, (double)0)), double>::value), "");
968     static_assert((std::is_same<decltype(std::fma((double)0, (long)0, (double)0)), double>::value), "");
969     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (unsigned long long)0)), double>::value), "");
970     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (float)0)), double>::value), "");
971     static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (long double)0)), long double>::value), "");
972     static_assert((std::is_same<decltype(std::fma((double)0, (double)0,  (double)0)), double>::value), "");
973 
974     static_assert((std::is_same<decltype(std::fma((bool)0, (long double)0, (long double)0)), long double>::value), "");
975     static_assert((std::is_same<decltype(std::fma((char)0, (long double)0, (long double)0)), long double>::value), "");
976     static_assert((std::is_same<decltype(std::fma((unsigned)0, (long double)0, (long double)0)), long double>::value), "");
977     static_assert((std::is_same<decltype(std::fma((long double)0, (int)0, (long double)0)), long double>::value), "");
978     static_assert((std::is_same<decltype(std::fma((long double)0, (long)0, (long double)0)), long double>::value), "");
979     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (unsigned long long)0)), long double>::value), "");
980     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (float)0)), long double>::value), "");
981     static_assert((std::is_same<decltype(std::fma((double)0, (long double)0, (long double)0)), long double>::value), "");
982     static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
983 
984     static_assert((std::is_same<decltype(std::fmaf(0,0,0)), float>::value), "");
985     static_assert((std::is_same<decltype(std::fmal(0,0,0)), long double>::value), "");
986     static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
987     assert(std::fma(1,1,1) == 2);
988 }
989 
990 void test_fmax()
991 {
992     static_assert((std::is_same<decltype(std::fmax((float)0, (float)0)), float>::value), "");
993     static_assert((std::is_same<decltype(std::fmax((bool)0, (float)0)), double>::value), "");
994     static_assert((std::is_same<decltype(std::fmax((unsigned short)0, (double)0)), double>::value), "");
995     static_assert((std::is_same<decltype(std::fmax((int)0, (long double)0)), long double>::value), "");
996     static_assert((std::is_same<decltype(std::fmax((float)0, (unsigned int)0)), double>::value), "");
997     static_assert((std::is_same<decltype(std::fmax((double)0, (long)0)), double>::value), "");
998     static_assert((std::is_same<decltype(std::fmax((long double)0, (unsigned long)0)), long double>::value), "");
999     static_assert((std::is_same<decltype(std::fmax((int)0, (long long)0)), double>::value), "");
1000     static_assert((std::is_same<decltype(std::fmax((int)0, (unsigned long long)0)), double>::value), "");
1001     static_assert((std::is_same<decltype(std::fmax((double)0, (double)0)), double>::value), "");
1002     static_assert((std::is_same<decltype(std::fmax((long double)0, (long double)0)), long double>::value), "");
1003     static_assert((std::is_same<decltype(std::fmax((float)0, (double)0)), double>::value), "");
1004     static_assert((std::is_same<decltype(std::fmax((float)0, (long double)0)), long double>::value), "");
1005     static_assert((std::is_same<decltype(std::fmax((double)0, (long double)0)), long double>::value), "");
1006     static_assert((std::is_same<decltype(std::fmaxf(0,0)), float>::value), "");
1007     static_assert((std::is_same<decltype(std::fmaxl(0,0)), long double>::value), "");
1008     static_assert((std::is_same<decltype(std::fmax((int)0, (int)0)), double>::value), "");
1009     static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1010     assert(std::fmax(1,0) == 1);
1011 }
1012 
1013 void test_fmin()
1014 {
1015     static_assert((std::is_same<decltype(std::fmin((float)0, (float)0)), float>::value), "");
1016     static_assert((std::is_same<decltype(std::fmin((bool)0, (float)0)), double>::value), "");
1017     static_assert((std::is_same<decltype(std::fmin((unsigned short)0, (double)0)), double>::value), "");
1018     static_assert((std::is_same<decltype(std::fmin((int)0, (long double)0)), long double>::value), "");
1019     static_assert((std::is_same<decltype(std::fmin((float)0, (unsigned int)0)), double>::value), "");
1020     static_assert((std::is_same<decltype(std::fmin((double)0, (long)0)), double>::value), "");
1021     static_assert((std::is_same<decltype(std::fmin((long double)0, (unsigned long)0)), long double>::value), "");
1022     static_assert((std::is_same<decltype(std::fmin((int)0, (long long)0)), double>::value), "");
1023     static_assert((std::is_same<decltype(std::fmin((int)0, (unsigned long long)0)), double>::value), "");
1024     static_assert((std::is_same<decltype(std::fmin((double)0, (double)0)), double>::value), "");
1025     static_assert((std::is_same<decltype(std::fmin((long double)0, (long double)0)), long double>::value), "");
1026     static_assert((std::is_same<decltype(std::fmin((float)0, (double)0)), double>::value), "");
1027     static_assert((std::is_same<decltype(std::fmin((float)0, (long double)0)), long double>::value), "");
1028     static_assert((std::is_same<decltype(std::fmin((double)0, (long double)0)), long double>::value), "");
1029     static_assert((std::is_same<decltype(std::fminf(0,0)), float>::value), "");
1030     static_assert((std::is_same<decltype(std::fminl(0,0)), long double>::value), "");
1031     static_assert((std::is_same<decltype(std::fmin((int)0, (int)0)), double>::value), "");
1032     static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1033     assert(std::fmin(1,0) == 0);
1034 }
1035 
1036 void test_hypot()
1037 {
1038     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0)), float>::value), "");
1039     static_assert((std::is_same<decltype(std::hypot((bool)0, (float)0)), double>::value), "");
1040     static_assert((std::is_same<decltype(std::hypot((unsigned short)0, (double)0)), double>::value), "");
1041     static_assert((std::is_same<decltype(std::hypot((int)0, (long double)0)), long double>::value), "");
1042     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned int)0)), double>::value), "");
1043     static_assert((std::is_same<decltype(std::hypot((double)0, (long)0)), double>::value), "");
1044     static_assert((std::is_same<decltype(std::hypot((long double)0, (unsigned long)0)), long double>::value), "");
1045     static_assert((std::is_same<decltype(std::hypot((int)0, (long long)0)), double>::value), "");
1046     static_assert((std::is_same<decltype(std::hypot((int)0, (unsigned long long)0)), double>::value), "");
1047     static_assert((std::is_same<decltype(std::hypot((double)0, (double)0)), double>::value), "");
1048     static_assert((std::is_same<decltype(std::hypot((long double)0, (long double)0)), long double>::value), "");
1049     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0)), double>::value), "");
1050     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0)), long double>::value), "");
1051     static_assert((std::is_same<decltype(std::hypot((double)0, (long double)0)), long double>::value), "");
1052     static_assert((std::is_same<decltype(std::hypotf(0,0)), float>::value), "");
1053     static_assert((std::is_same<decltype(std::hypotl(0,0)), long double>::value), "");
1054     static_assert((std::is_same<decltype(std::hypot((int)0, (int)0)), double>::value), "");
1055     static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1056     assert(std::hypot(3,4) == 5);
1057 
1058 #if TEST_STD_VER > 14
1059     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (float)0)), float>::value), "");
1060     static_assert((std::is_same<decltype(std::hypot((float)0, (bool)0, (float)0)), double>::value), "");
1061     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned short)0, (double)0)), double>::value), "");
1062     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long double)0)), long double>::value), "");
1063     static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned int)0)), double>::value), "");
1064     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long)0)), double>::value), "");
1065     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (unsigned long)0)), long double>::value), "");
1066     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long long)0)), double>::value), "");
1067     static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (unsigned long long)0)), double>::value), "");
1068     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (double)0)), double>::value), "");
1069     static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (long double)0)), long double>::value), "");
1070     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (double)0)), double>::value), "");
1071     static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (long double)0)), long double>::value), "");
1072     static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long double)0)), long double>::value), "");
1073     static_assert((std::is_same<decltype(std::hypot((int)0, (int)0, (int)0)), double>::value), "");
1074     static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1075 
1076     assert(std::hypot(2,3,6) == 7);
1077     assert(std::hypot(1,4,8) == 9);
1078 #endif
1079 }
1080 
1081 void test_ilogb()
1082 {
1083     static_assert((std::is_same<decltype(std::ilogb((float)0)), int>::value), "");
1084     static_assert((std::is_same<decltype(std::ilogb((bool)0)), int>::value), "");
1085     static_assert((std::is_same<decltype(std::ilogb((unsigned short)0)), int>::value), "");
1086     static_assert((std::is_same<decltype(std::ilogb((int)0)), int>::value), "");
1087     static_assert((std::is_same<decltype(std::ilogb((unsigned int)0)), int>::value), "");
1088     static_assert((std::is_same<decltype(std::ilogb((long)0)), int>::value), "");
1089     static_assert((std::is_same<decltype(std::ilogb((unsigned long)0)), int>::value), "");
1090     static_assert((std::is_same<decltype(std::ilogb((long long)0)), int>::value), "");
1091     static_assert((std::is_same<decltype(std::ilogb((unsigned long long)0)), int>::value), "");
1092     static_assert((std::is_same<decltype(std::ilogb((double)0)), int>::value), "");
1093     static_assert((std::is_same<decltype(std::ilogb((long double)0)), int>::value), "");
1094     static_assert((std::is_same<decltype(std::ilogbf(0)), int>::value), "");
1095     static_assert((std::is_same<decltype(std::ilogbl(0)), int>::value), "");
1096     static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
1097     assert(std::ilogb(1) == 0);
1098 }
1099 
1100 void test_lgamma()
1101 {
1102     static_assert((std::is_same<decltype(std::lgamma((float)0)), float>::value), "");
1103     static_assert((std::is_same<decltype(std::lgamma((bool)0)), double>::value), "");
1104     static_assert((std::is_same<decltype(std::lgamma((unsigned short)0)), double>::value), "");
1105     static_assert((std::is_same<decltype(std::lgamma((int)0)), double>::value), "");
1106     static_assert((std::is_same<decltype(std::lgamma((unsigned int)0)), double>::value), "");
1107     static_assert((std::is_same<decltype(std::lgamma((long)0)), double>::value), "");
1108     static_assert((std::is_same<decltype(std::lgamma((unsigned long)0)), double>::value), "");
1109     static_assert((std::is_same<decltype(std::lgamma((long long)0)), double>::value), "");
1110     static_assert((std::is_same<decltype(std::lgamma((unsigned long long)0)), double>::value), "");
1111     static_assert((std::is_same<decltype(std::lgamma((double)0)), double>::value), "");
1112     static_assert((std::is_same<decltype(std::lgamma((long double)0)), long double>::value), "");
1113     static_assert((std::is_same<decltype(std::lgammaf(0)), float>::value), "");
1114     static_assert((std::is_same<decltype(std::lgammal(0)), long double>::value), "");
1115     static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
1116     assert(std::lgamma(1) == 0);
1117 }
1118 
1119 void test_llrint()
1120 {
1121     static_assert((std::is_same<decltype(std::llrint((float)0)), long long>::value), "");
1122     static_assert((std::is_same<decltype(std::llrint((bool)0)), long long>::value), "");
1123     static_assert((std::is_same<decltype(std::llrint((unsigned short)0)), long long>::value), "");
1124     static_assert((std::is_same<decltype(std::llrint((int)0)), long long>::value), "");
1125     static_assert((std::is_same<decltype(std::llrint((unsigned int)0)), long long>::value), "");
1126     static_assert((std::is_same<decltype(std::llrint((long)0)), long long>::value), "");
1127     static_assert((std::is_same<decltype(std::llrint((unsigned long)0)), long long>::value), "");
1128     static_assert((std::is_same<decltype(std::llrint((long long)0)), long long>::value), "");
1129     static_assert((std::is_same<decltype(std::llrint((unsigned long long)0)), long long>::value), "");
1130     static_assert((std::is_same<decltype(std::llrint((double)0)), long long>::value), "");
1131     static_assert((std::is_same<decltype(std::llrint((long double)0)), long long>::value), "");
1132     static_assert((std::is_same<decltype(std::llrintf(0)), long long>::value), "");
1133     static_assert((std::is_same<decltype(std::llrintl(0)), long long>::value), "");
1134     static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
1135     assert(std::llrint(1) == 1LL);
1136 }
1137 
1138 void test_llround()
1139 {
1140     static_assert((std::is_same<decltype(std::llround((float)0)), long long>::value), "");
1141     static_assert((std::is_same<decltype(std::llround((bool)0)), long long>::value), "");
1142     static_assert((std::is_same<decltype(std::llround((unsigned short)0)), long long>::value), "");
1143     static_assert((std::is_same<decltype(std::llround((int)0)), long long>::value), "");
1144     static_assert((std::is_same<decltype(std::llround((unsigned int)0)), long long>::value), "");
1145     static_assert((std::is_same<decltype(std::llround((long)0)), long long>::value), "");
1146     static_assert((std::is_same<decltype(std::llround((unsigned long)0)), long long>::value), "");
1147     static_assert((std::is_same<decltype(std::llround((long long)0)), long long>::value), "");
1148     static_assert((std::is_same<decltype(std::llround((unsigned long long)0)), long long>::value), "");
1149     static_assert((std::is_same<decltype(std::llround((double)0)), long long>::value), "");
1150     static_assert((std::is_same<decltype(std::llround((long double)0)), long long>::value), "");
1151     static_assert((std::is_same<decltype(std::llroundf(0)), long long>::value), "");
1152     static_assert((std::is_same<decltype(std::llroundl(0)), long long>::value), "");
1153     static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
1154     assert(std::llround(1) == 1LL);
1155 }
1156 
1157 void test_log1p()
1158 {
1159     static_assert((std::is_same<decltype(std::log1p((float)0)), float>::value), "");
1160     static_assert((std::is_same<decltype(std::log1p((bool)0)), double>::value), "");
1161     static_assert((std::is_same<decltype(std::log1p((unsigned short)0)), double>::value), "");
1162     static_assert((std::is_same<decltype(std::log1p((int)0)), double>::value), "");
1163     static_assert((std::is_same<decltype(std::log1p((unsigned int)0)), double>::value), "");
1164     static_assert((std::is_same<decltype(std::log1p((long)0)), double>::value), "");
1165     static_assert((std::is_same<decltype(std::log1p((unsigned long)0)), double>::value), "");
1166     static_assert((std::is_same<decltype(std::log1p((long long)0)), double>::value), "");
1167     static_assert((std::is_same<decltype(std::log1p((unsigned long long)0)), double>::value), "");
1168     static_assert((std::is_same<decltype(std::log1p((double)0)), double>::value), "");
1169     static_assert((std::is_same<decltype(std::log1p((long double)0)), long double>::value), "");
1170     static_assert((std::is_same<decltype(std::log1pf(0)), float>::value), "");
1171     static_assert((std::is_same<decltype(std::log1pl(0)), long double>::value), "");
1172     static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
1173     assert(std::log1p(0) == 0);
1174 }
1175 
1176 void test_log2()
1177 {
1178     static_assert((std::is_same<decltype(std::log2((float)0)), float>::value), "");
1179     static_assert((std::is_same<decltype(std::log2((bool)0)), double>::value), "");
1180     static_assert((std::is_same<decltype(std::log2((unsigned short)0)), double>::value), "");
1181     static_assert((std::is_same<decltype(std::log2((int)0)), double>::value), "");
1182     static_assert((std::is_same<decltype(std::log2((unsigned int)0)), double>::value), "");
1183     static_assert((std::is_same<decltype(std::log2((long)0)), double>::value), "");
1184     static_assert((std::is_same<decltype(std::log2((unsigned long)0)), double>::value), "");
1185     static_assert((std::is_same<decltype(std::log2((long long)0)), double>::value), "");
1186     static_assert((std::is_same<decltype(std::log2((unsigned long long)0)), double>::value), "");
1187     static_assert((std::is_same<decltype(std::log2((double)0)), double>::value), "");
1188     static_assert((std::is_same<decltype(std::log2((long double)0)), long double>::value), "");
1189     static_assert((std::is_same<decltype(std::log2f(0)), float>::value), "");
1190     static_assert((std::is_same<decltype(std::log2l(0)), long double>::value), "");
1191     static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
1192     assert(std::log2(1) == 0);
1193 }
1194 
1195 void test_logb()
1196 {
1197     static_assert((std::is_same<decltype(std::logb((float)0)), float>::value), "");
1198     static_assert((std::is_same<decltype(std::logb((bool)0)), double>::value), "");
1199     static_assert((std::is_same<decltype(std::logb((unsigned short)0)), double>::value), "");
1200     static_assert((std::is_same<decltype(std::logb((int)0)), double>::value), "");
1201     static_assert((std::is_same<decltype(std::logb((unsigned int)0)), double>::value), "");
1202     static_assert((std::is_same<decltype(std::logb((long)0)), double>::value), "");
1203     static_assert((std::is_same<decltype(std::logb((unsigned long)0)), double>::value), "");
1204     static_assert((std::is_same<decltype(std::logb((long long)0)), double>::value), "");
1205     static_assert((std::is_same<decltype(std::logb((unsigned long long)0)), double>::value), "");
1206     static_assert((std::is_same<decltype(std::logb((double)0)), double>::value), "");
1207     static_assert((std::is_same<decltype(std::logb((long double)0)), long double>::value), "");
1208     static_assert((std::is_same<decltype(std::logbf(0)), float>::value), "");
1209     static_assert((std::is_same<decltype(std::logbl(0)), long double>::value), "");
1210     static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
1211     assert(std::logb(1) == 0);
1212 }
1213 
1214 void test_lrint()
1215 {
1216     static_assert((std::is_same<decltype(std::lrint((float)0)), long>::value), "");
1217     static_assert((std::is_same<decltype(std::lrint((bool)0)), long>::value), "");
1218     static_assert((std::is_same<decltype(std::lrint((unsigned short)0)), long>::value), "");
1219     static_assert((std::is_same<decltype(std::lrint((int)0)), long>::value), "");
1220     static_assert((std::is_same<decltype(std::lrint((unsigned int)0)), long>::value), "");
1221     static_assert((std::is_same<decltype(std::lrint((long)0)), long>::value), "");
1222     static_assert((std::is_same<decltype(std::lrint((unsigned long)0)), long>::value), "");
1223     static_assert((std::is_same<decltype(std::lrint((long long)0)), long>::value), "");
1224     static_assert((std::is_same<decltype(std::lrint((unsigned long long)0)), long>::value), "");
1225     static_assert((std::is_same<decltype(std::lrint((double)0)), long>::value), "");
1226     static_assert((std::is_same<decltype(std::lrint((long double)0)), long>::value), "");
1227     static_assert((std::is_same<decltype(std::lrintf(0)), long>::value), "");
1228     static_assert((std::is_same<decltype(std::lrintl(0)), long>::value), "");
1229     static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
1230     assert(std::lrint(1) == 1L);
1231 }
1232 
1233 void test_lround()
1234 {
1235     static_assert((std::is_same<decltype(std::lround((float)0)), long>::value), "");
1236     static_assert((std::is_same<decltype(std::lround((bool)0)), long>::value), "");
1237     static_assert((std::is_same<decltype(std::lround((unsigned short)0)), long>::value), "");
1238     static_assert((std::is_same<decltype(std::lround((int)0)), long>::value), "");
1239     static_assert((std::is_same<decltype(std::lround((unsigned int)0)), long>::value), "");
1240     static_assert((std::is_same<decltype(std::lround((long)0)), long>::value), "");
1241     static_assert((std::is_same<decltype(std::lround((unsigned long)0)), long>::value), "");
1242     static_assert((std::is_same<decltype(std::lround((long long)0)), long>::value), "");
1243     static_assert((std::is_same<decltype(std::lround((unsigned long long)0)), long>::value), "");
1244     static_assert((std::is_same<decltype(std::lround((double)0)), long>::value), "");
1245     static_assert((std::is_same<decltype(std::lround((long double)0)), long>::value), "");
1246     static_assert((std::is_same<decltype(std::lroundf(0)), long>::value), "");
1247     static_assert((std::is_same<decltype(std::lroundl(0)), long>::value), "");
1248     static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
1249     assert(std::lround(1) == 1L);
1250 }
1251 
1252 void test_nan()
1253 {
1254     static_assert((std::is_same<decltype(std::nan("")), double>::value), "");
1255     static_assert((std::is_same<decltype(std::nanf("")), float>::value), "");
1256     static_assert((std::is_same<decltype(std::nanl("")), long double>::value), "");
1257 }
1258 
1259 void test_nearbyint()
1260 {
1261     static_assert((std::is_same<decltype(std::nearbyint((float)0)), float>::value), "");
1262     static_assert((std::is_same<decltype(std::nearbyint((bool)0)), double>::value), "");
1263     static_assert((std::is_same<decltype(std::nearbyint((unsigned short)0)), double>::value), "");
1264     static_assert((std::is_same<decltype(std::nearbyint((int)0)), double>::value), "");
1265     static_assert((std::is_same<decltype(std::nearbyint((unsigned int)0)), double>::value), "");
1266     static_assert((std::is_same<decltype(std::nearbyint((long)0)), double>::value), "");
1267     static_assert((std::is_same<decltype(std::nearbyint((unsigned long)0)), double>::value), "");
1268     static_assert((std::is_same<decltype(std::nearbyint((long long)0)), double>::value), "");
1269     static_assert((std::is_same<decltype(std::nearbyint((unsigned long long)0)), double>::value), "");
1270     static_assert((std::is_same<decltype(std::nearbyint((double)0)), double>::value), "");
1271     static_assert((std::is_same<decltype(std::nearbyint((long double)0)), long double>::value), "");
1272     static_assert((std::is_same<decltype(std::nearbyintf(0)), float>::value), "");
1273     static_assert((std::is_same<decltype(std::nearbyintl(0)), long double>::value), "");
1274     static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
1275     assert(std::nearbyint(1) == 1);
1276 }
1277 
1278 void test_nextafter()
1279 {
1280     static_assert((std::is_same<decltype(std::nextafter((float)0, (float)0)), float>::value), "");
1281     static_assert((std::is_same<decltype(std::nextafter((bool)0, (float)0)), double>::value), "");
1282     static_assert((std::is_same<decltype(std::nextafter((unsigned short)0, (double)0)), double>::value), "");
1283     static_assert((std::is_same<decltype(std::nextafter((int)0, (long double)0)), long double>::value), "");
1284     static_assert((std::is_same<decltype(std::nextafter((float)0, (unsigned int)0)), double>::value), "");
1285     static_assert((std::is_same<decltype(std::nextafter((double)0, (long)0)), double>::value), "");
1286     static_assert((std::is_same<decltype(std::nextafter((long double)0, (unsigned long)0)), long double>::value), "");
1287     static_assert((std::is_same<decltype(std::nextafter((int)0, (long long)0)), double>::value), "");
1288     static_assert((std::is_same<decltype(std::nextafter((int)0, (unsigned long long)0)), double>::value), "");
1289     static_assert((std::is_same<decltype(std::nextafter((double)0, (double)0)), double>::value), "");
1290     static_assert((std::is_same<decltype(std::nextafter((long double)0, (long double)0)), long double>::value), "");
1291     static_assert((std::is_same<decltype(std::nextafter((float)0, (double)0)), double>::value), "");
1292     static_assert((std::is_same<decltype(std::nextafter((float)0, (long double)0)), long double>::value), "");
1293     static_assert((std::is_same<decltype(std::nextafter((double)0, (long double)0)), long double>::value), "");
1294     static_assert((std::is_same<decltype(std::nextafterf(0,0)), float>::value), "");
1295     static_assert((std::is_same<decltype(std::nextafterl(0,0)), long double>::value), "");
1296     static_assert((std::is_same<decltype(std::nextafter((int)0, (int)0)), double>::value), "");
1297     static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1298     assert(std::nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
1299 }
1300 
1301 void test_nexttoward()
1302 {
1303     static_assert((std::is_same<decltype(std::nexttoward((float)0, (long double)0)), float>::value), "");
1304     static_assert((std::is_same<decltype(std::nexttoward((bool)0, (long double)0)), double>::value), "");
1305     static_assert((std::is_same<decltype(std::nexttoward((unsigned short)0, (long double)0)), double>::value), "");
1306     static_assert((std::is_same<decltype(std::nexttoward((int)0, (long double)0)), double>::value), "");
1307     static_assert((std::is_same<decltype(std::nexttoward((unsigned int)0, (long double)0)), double>::value), "");
1308     static_assert((std::is_same<decltype(std::nexttoward((long)0, (long double)0)), double>::value), "");
1309     static_assert((std::is_same<decltype(std::nexttoward((unsigned long)0, (long double)0)), double>::value), "");
1310     static_assert((std::is_same<decltype(std::nexttoward((long long)0, (long double)0)), double>::value), "");
1311     static_assert((std::is_same<decltype(std::nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
1312     static_assert((std::is_same<decltype(std::nexttoward((double)0, (long double)0)), double>::value), "");
1313     static_assert((std::is_same<decltype(std::nexttoward((long double)0, (long double)0)), long double>::value), "");
1314     static_assert((std::is_same<decltype(std::nexttowardf(0, (long double)0)), float>::value), "");
1315     static_assert((std::is_same<decltype(std::nexttowardl(0, (long double)0)), long double>::value), "");
1316     static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1317     assert(std::nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
1318 }
1319 
1320 void test_remainder()
1321 {
1322     static_assert((std::is_same<decltype(std::remainder((float)0, (float)0)), float>::value), "");
1323     static_assert((std::is_same<decltype(std::remainder((bool)0, (float)0)), double>::value), "");
1324     static_assert((std::is_same<decltype(std::remainder((unsigned short)0, (double)0)), double>::value), "");
1325     static_assert((std::is_same<decltype(std::remainder((int)0, (long double)0)), long double>::value), "");
1326     static_assert((std::is_same<decltype(std::remainder((float)0, (unsigned int)0)), double>::value), "");
1327     static_assert((std::is_same<decltype(std::remainder((double)0, (long)0)), double>::value), "");
1328     static_assert((std::is_same<decltype(std::remainder((long double)0, (unsigned long)0)), long double>::value), "");
1329     static_assert((std::is_same<decltype(std::remainder((int)0, (long long)0)), double>::value), "");
1330     static_assert((std::is_same<decltype(std::remainder((int)0, (unsigned long long)0)), double>::value), "");
1331     static_assert((std::is_same<decltype(std::remainder((double)0, (double)0)), double>::value), "");
1332     static_assert((std::is_same<decltype(std::remainder((long double)0, (long double)0)), long double>::value), "");
1333     static_assert((std::is_same<decltype(std::remainder((float)0, (double)0)), double>::value), "");
1334     static_assert((std::is_same<decltype(std::remainder((float)0, (long double)0)), long double>::value), "");
1335     static_assert((std::is_same<decltype(std::remainder((double)0, (long double)0)), long double>::value), "");
1336     static_assert((std::is_same<decltype(std::remainderf(0,0)), float>::value), "");
1337     static_assert((std::is_same<decltype(std::remainderl(0,0)), long double>::value), "");
1338     static_assert((std::is_same<decltype(std::remainder((int)0, (int)0)), double>::value), "");
1339     static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1340     assert(std::remainder(0.5,1) == 0.5);
1341 }
1342 
1343 void test_remquo()
1344 {
1345     int ip;
1346     static_assert((std::is_same<decltype(std::remquo((float)0, (float)0, &ip)), float>::value), "");
1347     static_assert((std::is_same<decltype(std::remquo((bool)0, (float)0, &ip)), double>::value), "");
1348     static_assert((std::is_same<decltype(std::remquo((unsigned short)0, (double)0, &ip)), double>::value), "");
1349     static_assert((std::is_same<decltype(std::remquo((int)0, (long double)0, &ip)), long double>::value), "");
1350     static_assert((std::is_same<decltype(std::remquo((float)0, (unsigned int)0, &ip)), double>::value), "");
1351     static_assert((std::is_same<decltype(std::remquo((double)0, (long)0, &ip)), double>::value), "");
1352     static_assert((std::is_same<decltype(std::remquo((long double)0, (unsigned long)0, &ip)), long double>::value), "");
1353     static_assert((std::is_same<decltype(std::remquo((int)0, (long long)0, &ip)), double>::value), "");
1354     static_assert((std::is_same<decltype(std::remquo((int)0, (unsigned long long)0, &ip)), double>::value), "");
1355     static_assert((std::is_same<decltype(std::remquo((double)0, (double)0, &ip)), double>::value), "");
1356     static_assert((std::is_same<decltype(std::remquo((long double)0, (long double)0, &ip)), long double>::value), "");
1357     static_assert((std::is_same<decltype(std::remquo((float)0, (double)0, &ip)), double>::value), "");
1358     static_assert((std::is_same<decltype(std::remquo((float)0, (long double)0, &ip)), long double>::value), "");
1359     static_assert((std::is_same<decltype(std::remquo((double)0, (long double)0, &ip)), long double>::value), "");
1360     static_assert((std::is_same<decltype(std::remquof(0,0, &ip)), float>::value), "");
1361     static_assert((std::is_same<decltype(std::remquol(0,0, &ip)), long double>::value), "");
1362     static_assert((std::is_same<decltype(std::remquo((int)0, (int)0, &ip)), double>::value), "");
1363     static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
1364     assert(std::remquo(0.5,1, &ip) == 0.5);
1365 }
1366 
1367 void test_rint()
1368 {
1369     static_assert((std::is_same<decltype(std::rint((float)0)), float>::value), "");
1370     static_assert((std::is_same<decltype(std::rint((bool)0)), double>::value), "");
1371     static_assert((std::is_same<decltype(std::rint((unsigned short)0)), double>::value), "");
1372     static_assert((std::is_same<decltype(std::rint((int)0)), double>::value), "");
1373     static_assert((std::is_same<decltype(std::rint((unsigned int)0)), double>::value), "");
1374     static_assert((std::is_same<decltype(std::rint((long)0)), double>::value), "");
1375     static_assert((std::is_same<decltype(std::rint((unsigned long)0)), double>::value), "");
1376     static_assert((std::is_same<decltype(std::rint((long long)0)), double>::value), "");
1377     static_assert((std::is_same<decltype(std::rint((unsigned long long)0)), double>::value), "");
1378     static_assert((std::is_same<decltype(std::rint((double)0)), double>::value), "");
1379     static_assert((std::is_same<decltype(std::rint((long double)0)), long double>::value), "");
1380     static_assert((std::is_same<decltype(std::rintf(0)), float>::value), "");
1381     static_assert((std::is_same<decltype(std::rintl(0)), long double>::value), "");
1382     static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
1383     assert(std::rint(1) == 1);
1384 }
1385 
1386 void test_round()
1387 {
1388     static_assert((std::is_same<decltype(std::round((float)0)), float>::value), "");
1389     static_assert((std::is_same<decltype(std::round((bool)0)), double>::value), "");
1390     static_assert((std::is_same<decltype(std::round((unsigned short)0)), double>::value), "");
1391     static_assert((std::is_same<decltype(std::round((int)0)), double>::value), "");
1392     static_assert((std::is_same<decltype(std::round((unsigned int)0)), double>::value), "");
1393     static_assert((std::is_same<decltype(std::round((long)0)), double>::value), "");
1394     static_assert((std::is_same<decltype(std::round((unsigned long)0)), double>::value), "");
1395     static_assert((std::is_same<decltype(std::round((long long)0)), double>::value), "");
1396     static_assert((std::is_same<decltype(std::round((unsigned long long)0)), double>::value), "");
1397     static_assert((std::is_same<decltype(std::round((double)0)), double>::value), "");
1398     static_assert((std::is_same<decltype(std::round((long double)0)), long double>::value), "");
1399     static_assert((std::is_same<decltype(std::roundf(0)), float>::value), "");
1400     static_assert((std::is_same<decltype(std::roundl(0)), long double>::value), "");
1401     static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
1402     assert(std::round(1) == 1);
1403 }
1404 
1405 void test_scalbln()
1406 {
1407     static_assert((std::is_same<decltype(std::scalbln((float)0, (long)0)), float>::value), "");
1408     static_assert((std::is_same<decltype(std::scalbln((bool)0, (long)0)), double>::value), "");
1409     static_assert((std::is_same<decltype(std::scalbln((unsigned short)0, (long)0)), double>::value), "");
1410     static_assert((std::is_same<decltype(std::scalbln((int)0, (long)0)), double>::value), "");
1411     static_assert((std::is_same<decltype(std::scalbln((unsigned int)0, (long)0)), double>::value), "");
1412     static_assert((std::is_same<decltype(std::scalbln((long)0, (long)0)), double>::value), "");
1413     static_assert((std::is_same<decltype(std::scalbln((unsigned long)0, (long)0)), double>::value), "");
1414     static_assert((std::is_same<decltype(std::scalbln((long long)0, (long)0)), double>::value), "");
1415     static_assert((std::is_same<decltype(std::scalbln((unsigned long long)0, (long)0)), double>::value), "");
1416     static_assert((std::is_same<decltype(std::scalbln((double)0, (long)0)), double>::value), "");
1417     static_assert((std::is_same<decltype(std::scalbln((long double)0, (long)0)), long double>::value), "");
1418     static_assert((std::is_same<decltype(std::scalblnf(0, (long)0)), float>::value), "");
1419     static_assert((std::is_same<decltype(std::scalblnl(0, (long)0)), long double>::value), "");
1420     static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1421     assert(std::scalbln(1, 1) == 2);
1422 }
1423 
1424 void test_scalbn()
1425 {
1426     static_assert((std::is_same<decltype(std::scalbn((float)0, (int)0)), float>::value), "");
1427     static_assert((std::is_same<decltype(std::scalbn((bool)0, (int)0)), double>::value), "");
1428     static_assert((std::is_same<decltype(std::scalbn((unsigned short)0, (int)0)), double>::value), "");
1429     static_assert((std::is_same<decltype(std::scalbn((int)0, (int)0)), double>::value), "");
1430     static_assert((std::is_same<decltype(std::scalbn((unsigned int)0, (int)0)), double>::value), "");
1431     static_assert((std::is_same<decltype(std::scalbn((long)0, (int)0)), double>::value), "");
1432     static_assert((std::is_same<decltype(std::scalbn((unsigned long)0, (int)0)), double>::value), "");
1433     static_assert((std::is_same<decltype(std::scalbn((long long)0, (int)0)), double>::value), "");
1434     static_assert((std::is_same<decltype(std::scalbn((unsigned long long)0, (int)0)), double>::value), "");
1435     static_assert((std::is_same<decltype(std::scalbn((double)0, (int)0)), double>::value), "");
1436     static_assert((std::is_same<decltype(std::scalbn((long double)0, (int)0)), long double>::value), "");
1437     static_assert((std::is_same<decltype(std::scalbnf(0, (int)0)), float>::value), "");
1438     static_assert((std::is_same<decltype(std::scalbnl(0, (int)0)), long double>::value), "");
1439     static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
1440     assert(std::scalbn(1, 1) == 2);
1441 }
1442 
1443 void test_tgamma()
1444 {
1445     static_assert((std::is_same<decltype(std::tgamma((float)0)), float>::value), "");
1446     static_assert((std::is_same<decltype(std::tgamma((bool)0)), double>::value), "");
1447     static_assert((std::is_same<decltype(std::tgamma((unsigned short)0)), double>::value), "");
1448     static_assert((std::is_same<decltype(std::tgamma((int)0)), double>::value), "");
1449     static_assert((std::is_same<decltype(std::tgamma((unsigned int)0)), double>::value), "");
1450     static_assert((std::is_same<decltype(std::tgamma((long)0)), double>::value), "");
1451     static_assert((std::is_same<decltype(std::tgamma((unsigned long)0)), double>::value), "");
1452     static_assert((std::is_same<decltype(std::tgamma((long long)0)), double>::value), "");
1453     static_assert((std::is_same<decltype(std::tgamma((unsigned long long)0)), double>::value), "");
1454     static_assert((std::is_same<decltype(std::tgamma((double)0)), double>::value), "");
1455     static_assert((std::is_same<decltype(std::tgamma((long double)0)), long double>::value), "");
1456     static_assert((std::is_same<decltype(std::tgammaf(0)), float>::value), "");
1457     static_assert((std::is_same<decltype(std::tgammal(0)), long double>::value), "");
1458     static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
1459     assert(std::tgamma(1) == 1);
1460 }
1461 
1462 void test_trunc()
1463 {
1464     static_assert((std::is_same<decltype(std::trunc((float)0)), float>::value), "");
1465     static_assert((std::is_same<decltype(std::trunc((bool)0)), double>::value), "");
1466     static_assert((std::is_same<decltype(std::trunc((unsigned short)0)), double>::value), "");
1467     static_assert((std::is_same<decltype(std::trunc((int)0)), double>::value), "");
1468     static_assert((std::is_same<decltype(std::trunc((unsigned int)0)), double>::value), "");
1469     static_assert((std::is_same<decltype(std::trunc((long)0)), double>::value), "");
1470     static_assert((std::is_same<decltype(std::trunc((unsigned long)0)), double>::value), "");
1471     static_assert((std::is_same<decltype(std::trunc((long long)0)), double>::value), "");
1472     static_assert((std::is_same<decltype(std::trunc((unsigned long long)0)), double>::value), "");
1473     static_assert((std::is_same<decltype(std::trunc((double)0)), double>::value), "");
1474     static_assert((std::is_same<decltype(std::trunc((long double)0)), long double>::value), "");
1475     static_assert((std::is_same<decltype(std::truncf(0)), float>::value), "");
1476     static_assert((std::is_same<decltype(std::truncl(0)), long double>::value), "");
1477     static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
1478     assert(std::trunc(1) == 1);
1479 }
1480 
1481 int main()
1482 {
1483     test_abs();
1484     test_acos();
1485     test_asin();
1486     test_atan();
1487     test_atan2();
1488     test_ceil();
1489     test_cos();
1490     test_cosh();
1491     test_exp();
1492     test_fabs();
1493     test_floor();
1494     test_fmod();
1495     test_frexp();
1496     test_ldexp();
1497     test_log();
1498     test_log10();
1499     test_modf();
1500     test_pow();
1501     test_sin();
1502     test_sinh();
1503     test_sqrt();
1504     test_tan();
1505     test_tanh();
1506     test_signbit();
1507     test_fpclassify();
1508     test_isfinite();
1509     test_isnormal();
1510     test_isgreater();
1511     test_isgreaterequal();
1512     test_isinf();
1513     test_isless();
1514     test_islessequal();
1515     test_islessgreater();
1516     test_isnan();
1517     test_isunordered();
1518     test_acosh();
1519     test_asinh();
1520     test_atanh();
1521     test_cbrt();
1522     test_copysign();
1523     test_erf();
1524     test_erfc();
1525     test_exp2();
1526     test_expm1();
1527     test_fdim();
1528     test_fma();
1529     test_fmax();
1530     test_fmin();
1531     test_hypot();
1532     test_ilogb();
1533     test_lgamma();
1534     test_llrint();
1535     test_llround();
1536     test_log1p();
1537     test_log2();
1538     test_logb();
1539     test_lrint();
1540     test_lround();
1541     test_nan();
1542     test_nearbyint();
1543     test_nextafter();
1544     test_nexttoward();
1545     test_remainder();
1546     test_remquo();
1547     test_rint();
1548     test_round();
1549     test_scalbln();
1550     test_scalbn();
1551     test_tgamma();
1552     test_trunc();
1553 }
1554