1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 //===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // This file tests __floatundixf for the compiler_rt library.
13 //===----------------------------------------------------------------------===//
19 #if HAS_80_BIT_LONG_DOUBLE
20 // Returns: convert a to a long double, rounding toward even.
22 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
23 // du_int is a 64 bit integral type
25 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
26 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
28 COMPILER_RT_ABI long double __floatundixf(du_int a);
30 int test__floatundixf(du_int a, long double expected)
32 long double x = __floatundixf(a);
34 printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
39 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
40 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
41 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
46 #if HAS_80_BIT_LONG_DOUBLE
47 if (test__floatundixf(0, 0.0))
50 if (test__floatundixf(1, 1.0))
52 if (test__floatundixf(2, 2.0))
54 if (test__floatundixf(20, 20.0))
57 if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
59 if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
61 if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
63 if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
65 if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
67 if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
69 if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
72 if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
74 if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
76 if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
78 if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
81 if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
83 if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
86 if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
89 if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
91 if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
93 if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
95 if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
97 if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
100 if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
102 if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
104 if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
106 if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
108 if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
111 if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
113 if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
115 if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
117 if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
119 if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
121 if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
123 if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
125 if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
127 if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
129 if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
131 if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
133 if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
135 if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
137 if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
139 if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))