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

fegettrapenable(3M) fegettrapenable(3M)

NAME

fegettrapenable() - get exception trap enable bits

SYNOPSIS

#include <fenv.h>

int fegettrapenable(void);

DESCRIPTION

The fegettrapenable()

function determines which exception trap enable bits are currently set.

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

The

fegettrapenable()

function returns the bitwise OR of the exception macros corresponding to the

currently set exception trap enable bits. The macros are

FE_INEXACT , FE_DIVBYZERO ,

FE_UNDERFLOW , FE_OVERFLOW , and FE_INVALID . FE_ALL_EXCEPT

represents all the exceptions.

ERRORS

No errors are deﬁned.

EXAMPLE

Retrieve the current trap settings and determine whether a trap for the divide by zero exception is enabled.

#include <fenv.h>

/*...*/

if (fegettrapenable() & FE_DIVBYZERO)

printf("divide by zero trap set\\n");

AUTHOR

fegettrapenable()

was developed by HP and is not required by any current standard.