7.6.2.3 The feraiseexcept function

Synopsis

1

#include <fenv.h>
int feraiseexcept(int excepts);

Description

2

The feraiseexcept function attempts to raise the supported floating-point exceptions represented by its argument.[1] The order in which these floating-point exceptions are raised is unspecified, except as stated in F.7.6. Whether the feraiseexcept function additionally raises the “inexact” floating-point exception whenever it raises the “overflow” or “underflow” floating-point exception is implementation-defined.

Returns

3

The feraiseexcept function returns zero if the excepts argument is zero or if all the specified exceptions were successfully raised. Otherwise, it returns a nonzero value.

Footnotes

[1]

The effect is intended to be similar to that of floating-point exceptions raised by arithmetic operations. Hence, enabled traps for floating-point exceptions raised by this function are taken. The specification in F.7.6 is in the same spirit.