fegetround

fegetround

Get the floating point rounding mode

Portability: C99

SYNOPSIS
DESCRIPTION
RETURN VALUE
CAUTIONS
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

   #include <fenv.h>

   int fegetround(void);

DESCRIPTION

fegetround is used to obtain the rounding mode from the current floating-point environment.

RETURN VALUE

fegetround returns an integer representing the current rounding mode. The integer will have one of the values FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD or FE_DOWNWARD, defined in fenv.h. If the rounding mode cannot be meaningfully determined, a negative value is returned.

CAUTIONS

fegetround returns -1 when called from a function whose default floating-point format is hexadecimal, that is, one compiled without the bfp option.

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

RELATED FUNCTIONS

fsetround

SEE ALSO

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

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