Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.c-torture/execute/ieee/mzero5.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* Test gcse handling of IEEE 0/-0 rules. */ static double zero = 0.0; int negzero_check (double d) { if (d == 0) return !!memcmp ((void *)&zero, (void *)&d, sizeof (double)); return 0; } int sub (double d, double e) { if (d == 0.0 && e == 0.0 && negzero_check (d) == 0 && negzero_check (e) == 0) return 1; else return 0; } int main (void) { double minus_zero = -0.0; if (sub (minus_zero, 0)) abort (); return 0; }