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Diffstat (limited to 'test/Unit/fixunssfti_test.c')
-rw-r--r-- | test/Unit/fixunssfti_test.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/test/Unit/fixunssfti_test.c b/test/Unit/fixunssfti_test.c new file mode 100644 index 000000000..39bef8b33 --- /dev/null +++ b/test/Unit/fixunssfti_test.c @@ -0,0 +1,120 @@ +//===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __fixunssfti for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#if __x86_64 + +#include "int_lib.h" +#include <stdio.h> + +// Returns: convert a to a unsigned long long, rounding toward zero. +// Negative values all become zero. + +// Assumption: float is a IEEE 32 bit floating point type +// tu_int is a 64 bit integral type +// value in float is representable in tu_int or is negative +// (no range checking performed) + +// seee eeee emmm mmmm mmmm mmmm mmmm mmmm + +tu_int __fixunssfti(float a); + +int test__fixunssfti(float a, tu_int expected) +{ + tu_int x = __fixunssfti(a); + if (x != expected) + { + utwords xt; + xt.all = x; + utwords expectedt; + expectedt.all = expected; + printf("error in __fixunssfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n", + a, xt.high, xt.low, expectedt.high, expectedt.low); + } + return x != expected; +} + +char assumption_1[sizeof(tu_int) == 2*sizeof(di_int)] = {0}; +char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; +char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0}; + +#endif + +int main() +{ +#if __x86_64 + if (test__fixunssfti(0.0F, 0)) + return 1; + + if (test__fixunssfti(0.5F, 0)) + return 1; + if (test__fixunssfti(0.99F, 0)) + return 1; + if (test__fixunssfti(1.0F, 1)) + return 1; + if (test__fixunssfti(1.5F, 1)) + return 1; + if (test__fixunssfti(1.99F, 1)) + return 1; + if (test__fixunssfti(2.0F, 2)) + return 1; + if (test__fixunssfti(2.01F, 2)) + return 1; + if (test__fixunssfti(-0.5F, 0)) + return 1; + if (test__fixunssfti(-0.99F, 0)) + return 1; +#if !TARGET_LIBGCC + if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec + return 1; + if (test__fixunssfti(-1.5F, 0)) + return 1; + if (test__fixunssfti(-1.99F, 0)) + return 1; + if (test__fixunssfti(-2.0F, 0)) + return 1; + if (test__fixunssfti(-2.01F, 0)) + return 1; +#endif + + if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL)) + return 1; + if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL)) + return 1; + if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL)) + return 1; + if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL)) + return 1; + + if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000LL, 0))) + return 1; + if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 0))) + return 1; + if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0))) + return 1; + if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0))) + return 1; + +#if !TARGET_LIBGCC + if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL)) + return 1; + if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL)) + return 1; + if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL)) + return 1; + if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL)) + return 1; +#endif + +#endif + return 0; +} |