Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/torture/float128-truncsf-underflow.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +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); }