feraiseexcept()

Raise the specified floating-point exceptions

Synopsis:

#include <fenv.h>

int feraiseexcept( const int excepts );

Arguments:

excepts
A bitwise OR of the flags corresponding to the floating-point exceptions that you want to raise; zero or more of the following:
  • FE_ALL_EXCEPT — all the bits
  • FE_DIVBYZERO — pole error
  • FE_INEXACT — inexact result; rounding was necessary
  • FE_INVALID — domain error
  • FE_OVERFLOW — result is too large to be representable
  • FE_UNDERFLOW — result is subnormal with a loss of precision

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

The feraiseexcept() function attempts to raise the specified floating-point exceptions.

Returns:

0 if all indicated exceptions were raised, or a nonzero value if an error occurred.

Classification:

C99, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes