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/* Small test program for probing how various math functions
* with specific operands set floating point exceptions
*/
#define _ISOC99_SOURCE 1
#define _GNU_SOURCE 1
#include <math.h>
#include <fenv.h>
#include <stdio.h>
int main(int argc, char **argv)
{
float infF = HUGE_VALF * 2;
feclearexcept(FE_ALL_EXCEPT);
// printf("%.40e\n", 1.0 / 0.0); // FE_DIVBYZERO
// printf("%.40e\n", nextafterf(HUGE_VALF, infF)); // no exceptions in glibc 2.4
#define PREX(ex) do { if (fetestexcept(ex)) printf(#ex); } while(0)
#ifdef FE_INEXACT
PREX(FE_INEXACT);
#endif
#ifdef FE_DIVBYZERO
PREX(FE_DIVBYZERO);
#endif
#ifdef FE_UNDERFLOW
PREX(FE_UNDERFLOW);
#endif
#ifdef FE_OVERFLOW
PREX(FE_OVERFLOW);
#endif
#ifdef FE_INVALID
PREX(FE_INVALID);
#endif
if (fetestexcept(FE_ALL_EXCEPT))
printf("\n");
printf("done\n");
return 0;
}
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