Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/torture/float128-truncsf-underflow.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* Test truncation from __float128 to float uses after-rounding tininess detection. */ /* { dg-do run { target i?86-*-* x86_64-*-* ia64-*-* } } */ /* { dg-options "" } */ /* { dg-require-effective-target fenv_exceptions } */ #include <fenv.h> #include <stdlib.h> int main (void) { volatile __float128 a = 0x0.ffffffffffp-126q, b = 0x0.ffffffp-126q; volatile float r; r = (float) a; if (fetestexcept (FE_UNDERFLOW)) abort (); if (r != 0x1p-126f) abort (); r = (float) b; if (!fetestexcept (FE_UNDERFLOW)) abort (); if (r != 0x1p-126f) abort (); exit (0); }