1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatdixf
3
4 #include "int_lib.h"
5 #include <stdio.h>
6
7 #if HAS_80_BIT_LONG_DOUBLE
8 // Returns: convert a to a long double, rounding toward even.
9
10 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
11 // di_int is a 64 bit integral type
12
13 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
14 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
15
16 long COMPILER_RT_ABI double __floatdixf(di_int a);
17
test__floatdixf(di_int a,long double expected)18 int test__floatdixf(di_int a, long double expected)
19 {
20 long double x = __floatdixf(a);
21 if (x != expected)
22 printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
23 a, x, expected);
24 return x != expected;
25 }
26
27 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
28 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
29 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
30 #endif
31
main()32 int main()
33 {
34 #if HAS_80_BIT_LONG_DOUBLE
35 if (test__floatdixf(0, 0.0))
36 return 1;
37
38 if (test__floatdixf(1, 1.0))
39 return 1;
40 if (test__floatdixf(2, 2.0))
41 return 1;
42 if (test__floatdixf(20, 20.0))
43 return 1;
44 if (test__floatdixf(-1, -1.0))
45 return 1;
46 if (test__floatdixf(-2, -2.0))
47 return 1;
48 if (test__floatdixf(-20, -20.0))
49 return 1;
50
51 if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
52 return 1;
53 if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
54 return 1;
55 if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
56 return 1;
57 if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
58 return 1;
59
60 if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
61 return 1;
62 if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
63 return 1;
64 if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
65 return 1;
66 if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
67 return 1;
68
69 if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
70 return 1;
71 if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
72 return 1;
73
74 if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
75 return 1;
76
77 if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
78 return 1;
79 if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
80 return 1;
81 if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
82 return 1;
83 if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
84 return 1;
85 if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
86 return 1;
87
88 if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
89 return 1;
90 if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
91 return 1;
92 if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
93 return 1;
94 if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
95 return 1;
96 if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
97 return 1;
98
99 if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
100 return 1;
101 if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
102 return 1;
103 if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
104 return 1;
105 if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
106 return 1;
107 if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
108 return 1;
109 if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
110 return 1;
111 if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
112 return 1;
113 if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
114 return 1;
115 if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
116 return 1;
117 if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
118 return 1;
119 if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
120 return 1;
121 if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
122 return 1;
123 if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
124 return 1;
125 if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
126 return 1;
127 if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
128 return 1;
129
130 #else
131 printf("skipped\n");
132 #endif
133 return 0;
134 }
135