HP-UX Reference (11i v1 00/12) - 3 Library Functions A-M (vol 6)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man3/!!!intro.3c
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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).
HP-UX Release 11i: December 2000 − 1 − Section 3−−219
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