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Diffstat (limited to 'test/Unit/fixxfti_test.c')
| -rw-r--r-- | test/Unit/fixxfti_test.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/test/Unit/fixxfti_test.c b/test/Unit/fixxfti_test.c new file mode 100644 index 000000000..86fdcc08b --- /dev/null +++ b/test/Unit/fixxfti_test.c @@ -0,0 +1,144 @@ +//===-- fixxfti_test.c - Test __fixxfti -----------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file tests __fixxfti for the compiler_rt library. +// +//===----------------------------------------------------------------------===// + +#if __x86_64 + +#include "int_lib.h" +#include <stdio.h> + +// Returns: convert a to a signed long long, rounding toward zero. + +// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes +// su_int is a 32 bit integral type +// value in long double is representable in ti_int (no range checking performed) + +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | +// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm + +ti_int __fixxfti(long double a); + +int test__fixxfti(long double a, ti_int expected) +{ + ti_int x = __fixxfti(a); + if (x != expected) + { + utwords xt; + xt.all = x; + utwords expectedt; + expectedt.all = expected; + printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n", + a, xt.high, xt.low, expectedt.high, expectedt.low); + } + return x != expected; +} + +char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; +char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0}; +char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0}; + +#endif + +int main() +{ +#if __x86_64 + if (test__fixxfti(0.0, 0)) + return 1; + + if (test__fixxfti(0.5, 0)) + return 1; + if (test__fixxfti(0.99, 0)) + return 1; + if (test__fixxfti(1.0, 1)) + return 1; + if (test__fixxfti(1.5, 1)) + return 1; + if (test__fixxfti(1.99, 1)) + return 1; + if (test__fixxfti(2.0, 2)) + return 1; + if (test__fixxfti(2.01, 2)) + return 1; + if (test__fixxfti(-0.5, 0)) + return 1; + if (test__fixxfti(-0.99, 0)) + return 1; + if (test__fixxfti(-1.0, -1)) + return 1; + if (test__fixxfti(-1.5, -1)) + return 1; + if (test__fixxfti(-1.99, -1)) + return 1; + if (test__fixxfti(-2.0, -2)) + return 1; + if (test__fixxfti(-2.01, -2)) + return 1; + + if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL)) + return 1; + if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL)) + return 1; + + if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000008000000000LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000010000000000LL))) + return 1; + + if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL)) + return 1; + if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL)) + return 1; + + if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000000000000400LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000000000000800LL))) + return 1; + + if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL)) + return 1; + if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL)) + return 1; + + if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000000000000000LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000000000000001LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL, + 0x8000000000000002LL))) + return 1; + + if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, + 0x8000000000000000LL))) + return 1; + if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, + 0x0000000000000000LL))) + + return 1; + + if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, + 0x0000000000000000LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL, + 0x8000000000000000LL))) + return 1; + if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL, + 0x0000000000000000LL))) + return 1; +#endif + return 0; +} |