fegetenv

fegetenv

Store the current floating point environment

Portability: C99

SYNOPSIS
DESCRIPTION
RETURN VALUE
CAUTIONS
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

   #include <fenv.h>

   void fegetenv(fenv_t *envp);

DESCRIPTION

fegetenv is used to store the current floating-point environment in the location addressed by the envp argument. The floating-point environment includes the exception bits, the rounding mode, and the definition of the exceptions for which trapping is enabled.

RETURN VALUE

fegetenv has no return value.

CAUTIONS

fegetenv stores a dummy value as the environment when called from a function whose default floating-point format is hexadecimal, that is, one compiled without the bfp option.

A program which calls fegetenv must use the standard FENV_ACCESS pragma in an enclosing scope, or the effects are unpredictable.

RELATED FUNCTIONS

feholdexcept, fesetenv, feupdateenv

SEE ALSO

"Mathematical Functions" in Chapter 2, "Function Categories"

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