NAME
feraiseexcept() — raise floating-point exceptions
SYNOPSIS
#include <fenv.h>
void feraiseexcept(int excepts);
DESCRIPTION
The
feraiseexcept()
function raises the exceptions represented by its argument.
The argument can be constructed as a bitwise OR of the exception macros:
FE_INEXACT,
FE_DIVBYZERO,
FE_UNDERFLOW,
FE_OVERFLOW,
and
FE_INVALID.
FE_ALL_EXCEPT
represents all the exceptions.
Any traps enabled for the specified exceptions will be taken.
The ISO/ANSI C committee has approved the
feraiseexcept()
function for inclusion in the C9X draft standard.
To use this function, compile either with the default
-Ae
option or with the
-Aa
and
-D_HPUX_SOURCE
options. Make sure your program includes
<fenv.h>.
Link in the math library by specifying
-lm
on the compiler or linker command line.
For more information, see the
HP-UX Floating-Point Guide.
ERRORS
No errors are defined.
EXAMPLES
Raise the underflow and inexact exceptions:
#include <fenv.h>
/*...*/
feraiseexcept(FE_UNDERFLOW | FE_INEXACT);
Raise all exceptions:
#include <fenv.h>
/*...*/
feraiseexcept(FE_ALL_EXCEPT);
