1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_floatundixf
3
4#include "int_lib.h"
5#include <stdio.h>
6
7
8#if HAS_80_BIT_LONG_DOUBLE
9// Returns: convert a to a long double, rounding toward even.
10
11// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
12// du_int is a 64 bit integral type
13
14// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
15// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
16
17COMPILER_RT_ABI long double __floatundixf(du_int a);
18
19int test__floatundixf(du_int a, long double expected)
20{
21 long double x = __floatundixf(a);
22 if (x != expected)
23 printf(format: "error in __floatundixf(%llX) = %LA, expected %LA\n",
24 a, x, expected);
25 return x != expected;
26}
27
28char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
29char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
30char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
31#endif
32
33int main()
34{
35#if HAS_80_BIT_LONG_DOUBLE
36 if (test__floatundixf(a: 0, expected: 0.0))
37 return 1;
38
39 if (test__floatundixf(a: 1, expected: 1.0))
40 return 1;
41 if (test__floatundixf(a: 2, expected: 2.0))
42 return 1;
43 if (test__floatundixf(a: 20, expected: 20.0))
44 return 1;
45
46 if (test__floatundixf(a: 0x7FFFFF8000000000ULL, expected: 0x1.FFFFFEp+62))
47 return 1;
48 if (test__floatundixf(a: 0x7FFFFFFFFFFFF800ULL, expected: 0x1.FFFFFFFFFFFFEp+62))
49 return 1;
50 if (test__floatundixf(a: 0x7FFFFF0000000000ULL, expected: 0x1.FFFFFCp+62))
51 return 1;
52 if (test__floatundixf(a: 0x7FFFFFFFFFFFF000ULL, expected: 0x1.FFFFFFFFFFFFCp+62))
53 return 1;
54 if (test__floatundixf(a: 0x7FFFFFFFFFFFFFFFULL, expected: 0xF.FFFFFFFFFFFFFFEp+59L))
55 return 1;
56 if (test__floatundixf(a: 0xFFFFFFFFFFFFFFFEULL, expected: 0xF.FFFFFFFFFFFFFFEp+60L))
57 return 1;
58 if (test__floatundixf(a: 0xFFFFFFFFFFFFFFFFULL, expected: 0xF.FFFFFFFFFFFFFFFp+60L))
59 return 1;
60
61 if (test__floatundixf(a: 0x8000008000000000ULL, expected: 0x8.000008p+60))
62 return 1;
63 if (test__floatundixf(a: 0x8000000000000800ULL, expected: 0x8.0000000000008p+60))
64 return 1;
65 if (test__floatundixf(a: 0x8000010000000000ULL, expected: 0x8.00001p+60))
66 return 1;
67 if (test__floatundixf(a: 0x8000000000001000ULL, expected: 0x8.000000000001p+60))
68 return 1;
69
70 if (test__floatundixf(a: 0x8000000000000000ULL, expected: 0x8p+60))
71 return 1;
72 if (test__floatundixf(a: 0x8000000000000001ULL, expected: 0x8.000000000000001p+60L))
73 return 1;
74
75 if (test__floatundixf(a: 0x0007FB72E8000000ULL, expected: 0x1.FEDCBAp+50))
76 return 1;
77
78 if (test__floatundixf(a: 0x0007FB72EA000000ULL, expected: 0x1.FEDCBA8p+50))
79 return 1;
80 if (test__floatundixf(a: 0x0007FB72EB000000ULL, expected: 0x1.FEDCBACp+50))
81 return 1;
82 if (test__floatundixf(a: 0x0007FB72EBFFFFFFULL, expected: 0x1.FEDCBAFFFFFFCp+50))
83 return 1;
84 if (test__floatundixf(a: 0x0007FB72EC000000ULL, expected: 0x1.FEDCBBp+50))
85 return 1;
86 if (test__floatundixf(a: 0x0007FB72E8000001ULL, expected: 0x1.FEDCBA0000004p+50))
87 return 1;
88
89 if (test__floatundixf(a: 0x0007FB72E6000000ULL, expected: 0x1.FEDCB98p+50))
90 return 1;
91 if (test__floatundixf(a: 0x0007FB72E7000000ULL, expected: 0x1.FEDCB9Cp+50))
92 return 1;
93 if (test__floatundixf(a: 0x0007FB72E7FFFFFFULL, expected: 0x1.FEDCB9FFFFFFCp+50))
94 return 1;
95 if (test__floatundixf(a: 0x0007FB72E4000001ULL, expected: 0x1.FEDCB90000004p+50))
96 return 1;
97 if (test__floatundixf(a: 0x0007FB72E4000000ULL, expected: 0x1.FEDCB9p+50))
98 return 1;
99
100 if (test__floatundixf(a: 0x023479FD0E092DC0ULL, expected: 0x1.1A3CFE870496Ep+57))
101 return 1;
102 if (test__floatundixf(a: 0x023479FD0E092DA1ULL, expected: 0x8.D1E7F43824B684p+54L))
103 return 1;
104 if (test__floatundixf(a: 0x023479FD0E092DB0ULL, expected: 0x8.D1E7f43824B6Cp+54L))
105 return 1;
106 if (test__floatundixf(a: 0x023479FD0E092DB8ULL, expected: 0x8.D1E7F43824B6Ep+54L))
107 return 1;
108 if (test__floatundixf(a: 0x023479FD0E092DB6ULL, expected: 0x8.D1E7F43824B6D8p+54L))
109 return 1;
110 if (test__floatundixf(a: 0x023479FD0E092DBFULL, expected: 0x8.D1E7F43824B6FCp+54L))
111 return 1;
112 if (test__floatundixf(a: 0x023479FD0E092DC1ULL, expected: 0x8.D1E7F43824B704p+54L))
113 return 1;
114 if (test__floatundixf(a: 0x023479FD0E092DC7ULL, expected: 0x8.D1E7F43824B71Cp+54L))
115 return 1;
116 if (test__floatundixf(a: 0x023479FD0E092DC8ULL, expected: 0x8.D1E7F43824B72p+54L))
117 return 1;
118 if (test__floatundixf(a: 0x023479FD0E092DCFULL, expected: 0x8.D1E7F43824B73Cp+54L))
119 return 1;
120 if (test__floatundixf(a: 0x023479FD0E092DD0ULL, expected: 0x8.D1E7F43824B74p+54L))
121 return 1;
122 if (test__floatundixf(a: 0x023479FD0E092DD1ULL, expected: 0x8.D1E7F43824B744p+54L))
123 return 1;
124 if (test__floatundixf(a: 0x023479FD0E092DD8ULL, expected: 0x8.D1E7F43824B76p+54L))
125 return 1;
126 if (test__floatundixf(a: 0x023479FD0E092DDFULL, expected: 0x8.D1E7F43824B77Cp+54L))
127 return 1;
128 if (test__floatundixf(a: 0x023479FD0E092DE0ULL, expected: 0x1.1A3CFE870496Fp+57))
129 return 1;
130
131#else
132 printf("skipped\n");
133#endif
134 return 0;
135}
136

source code of compiler-rt/test/builtins/Unit/floatundixf_test.c