fesetexceptflag()

Sets the floating-point environment's flags to the settings in contained a variable of type fexcept_t.

  #include <fenv.h>
  void fesetexceptflag(const fexcept_t *f, int excepts);

Parameter

f

A pointer to a constant exception flag variable.

excepts

Zero or more exceptions to copy to the floating-point environment.

Remarks

This facility may not be available on configurations of the EWL that run on platforms that do not have floating-point math capabilities.

Listing: Example of fesetexceptflag()


#include <fenv.h>

#include <stdio.h>

#pragma STDC FENV_ACCESS on

int main(void)

{

double result;

fexcept_t flags = 0;

/* Save the divisdivisionon-by-zero and overflow flags. */

fegetexceptflag(&flags, FE_DIVBYZERO | FE_OVERFLOW);

result = 0.0 / 0.0; /* Division by zero! */

/* Restore our flags. */

fesetexceptflag(&flags, FE_DIVBYZERO | FE_OVERFLOW);

return 0;

}