newlib-cygwin/winsup/mingw/mingwex/feclearexcept.c

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#include <fenv.h>
#include "cpu_features.h"
/* 7.6.2.1
The feclearexcept function clears the supported exceptions
represented by its argument. */
int feclearexcept (int excepts)
{
fenv_t _env;
excepts &= FE_ALL_EXCEPT;
__asm__ volatile ("fnstenv %0;" : "=m" (_env)); /* get the env */
_env.__status_word &= ~excepts; /* clear the except */
__asm__ volatile ("fldenv %0;" :: "m" (_env)); /*set the env */
if (__HAS_SSE)
{
unsigned _csr;
__asm__ volatile("stmxcsr %0" : "=m" (_csr)); /* get the register */
_csr &= ~excepts; /* clear the except */
__asm__ volatile("ldmxcsr %0" : : "m" (_csr)); /* set the register */
}
return 0;
}