1 // RUN: %clang_builtins %s %librt -o %t && %run %t
3 //===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
5 // The LLVM Compiler Infrastructure
7 // This file is dual licensed under the MIT and the University of Illinois Open
8 // Source Licenses. See LICENSE.TXT for details.
10 //===----------------------------------------------------------------------===//
12 // This file tests __fixunssfti for the compiler_rt library.
14 //===----------------------------------------------------------------------===//
21 // Returns: convert a to a unsigned long long, rounding toward zero.
22 // Negative values all become zero.
24 // Assumption: float is a IEEE 32 bit floating point type
25 // tu_int is a 64 bit integral type
26 // value in float is representable in tu_int or is negative
27 // (no range checking performed)
29 // seee eeee emmm mmmm mmmm mmmm mmmm mmmm
31 COMPILER_RT_ABI tu_int __fixunssfti(float a);
33 int test__fixunssfti(float a, tu_int expected)
35 tu_int x = __fixunssfti(a);
41 expectedt.all = expected;
42 printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
43 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
48 char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0};
49 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
50 char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
57 if (test__fixunssfti(0.0F, 0))
60 if (test__fixunssfti(0.5F, 0))
62 if (test__fixunssfti(0.99F, 0))
64 if (test__fixunssfti(1.0F, 1))
66 if (test__fixunssfti(1.5F, 1))
68 if (test__fixunssfti(1.99F, 1))
70 if (test__fixunssfti(2.0F, 2))
72 if (test__fixunssfti(2.01F, 2))
74 if (test__fixunssfti(-0.5F, 0))
76 if (test__fixunssfti(-0.99F, 0))
79 if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
81 if (test__fixunssfti(-1.5F, 0))
83 if (test__fixunssfti(-1.99F, 0))
85 if (test__fixunssfti(-2.0F, 0))
87 if (test__fixunssfti(-2.01F, 0))
91 if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000ULL))
93 if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000ULL))
95 if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
97 if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
100 if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000ULL, 0)))
102 if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000ULL, 0)))
104 if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
106 if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
110 if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
112 if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
114 if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
116 if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))