feraiseexcept

feraiseexcept

Raise floating point exception

Portability: C99

SYNOPSIS
DESCRIPTION
RETURN VALUE
CAUTIONS
RELATED FUNCTIONS
SEE ALSO

SYNOPSIS

   #include <fenv.h>

   void feraiseexcept(int excepts);

DESCRIPTION

feraiseexcept raises the floating-point exceptions indicated by the excepts argument, which should be the sum of one or more of the exception names defined by fenv.h. An exception is raised by setting the exception bit in the floating-point status. If trapping is enabled for that exception, the exception will be trapped and a signal will be raised.

RETURN VALUE

feraiseexcept has no return value.

CAUTIONS

feraiseexcept 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 feraiseexcept must use the standard FENV_ACCESS pragma in an enclosing scope, or the effects are unpredictable.

RELATED FUNCTIONS

feclearexcept, fegetexceptflag, fesetexceptflag, fetestexcept

SEE ALSO

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

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