HP-UX Reference (11i v1 05/09) - 3 Library Functions A-M (vol 6)

f
feclearexcept(3M) feclearexcept(3M)
NAME
feclearexcept( ) - clear floating-point exception flags
SYNOPSIS
#include <fenv.h>
void feclearexcept(int excepts);
DESCRIPTION
The feclearexcept()
function clears the exception flags 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.
The ISO/ANSI C committee has approved the
feclearexcept()
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.
RETURN VALUE
None.
ERRORS
No errors are defined.
EXAMPLES
Clear the underflow and inexact exception flags:
#include <fenv.h>
/*...*/
feclearexcept(FE_UNDERFLOW | FE_INEXACT);
Clear all exception flags:
#include <fenv.h>
/*...*/
feclearexcept(FE_ALL_EXCEPT);
SEE ALSO
fegetexceptflag(3M), fegettrapenable(3M), feraiseexcept(3M), fesetexceptflag(3M), fesettrapenable(3M),
fetestexcept(3M), fenv(5).
Section 3−−242 Hewlett-Packard Company − 1 − HP-UX 11i Version 1: September 2005