Legacy Document

fegetenv

You can use the fegetenv function to save the current state of the floating-point environment.

void fegetenv (fenv_t *envp);

envp

A pointer to an environment word that will store the current state of the environment upon the function's return.

DESCRIPTION

The fegetenv function saves the current state of the rounding direction modes and the floating-point exception flags in the object pointed to by its envp argument.

EXAMPLES

double_t func (double_t x, double_t y)
{
   fenv_t *env;

   x = x + y;        /* floating-point op; may raise exceptions */
   fegetenv(env);    /* save state of env after add */

   y = y * x;        /* floating-point op; may raise exceptions */
   .
   .
   .
}