Note
The following functionality requires you to select a floating-point
model that supports exceptions, such as --fpmode=ieee_full or --fpmode=ieee_fixed.
C99 provides the following functions to save and restore the entire floating-point environment:
void fegetenv(fenv_t *envp); void fesetenv(const fenv_t *envp);
The fegetenv() function stores the current
state of the floating-point environment into the fenv_t variable
provided. The fesetenv() function restores
the environment from the variable provided.
Like fesetexceptflag(), fesetenv() does
not call trap handlers when it sets the sticky flags for trapped
exceptions.
See also- Concepts
- Reference
Compiler Reference:
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