fetestexcept man page on Solaris

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fetestexcept(3M)	Mathematical Library Functions	      fetestexcept(3M)

NAME
       fetestexcept - test floating-point exception flags

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <fenv.h>

       int fetestexcept(int excepts);

DESCRIPTION
       The  fetestexcept()  function determines which of a specified subset of
       the floating-point exception flags are currently set. The excepts argu‐
       ment specifies the floating-point status flags to be queried.

RETURN VALUES
       The  fetestexcept() function returns the value of the bitwise-inclusive
       OR of the floating-point exception macros  corresponding	 to  the  cur‐
       rently set floating-point exceptions included in excepts.

ERRORS
       No errors are defined.

EXAMPLES
       Example 1: Example using fetestexcept()

       The  following  example	calls function f( ) if an invalid exception is
       set, and then function g( ) if an overflow exception is set:

       #include <fenv.h>
       /* ... */
       {
       #     pragma STDC FENV_ACCESS ON
	     int set_excepts;
	     feclearexcept(FE_INVALID | FE_OVERFLOW);
	     // maybe raise exceptions
	     set_excepts = fetestexcept(FE_INVALID | FE_OVERFLOW);
	     if (set_excepts & FE_INVALID) f();
	     if (set_excepts & FE_OVERFLOW) g();
	     /* ... */
       }

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       feclearexcept(3M), fegetexceptflag(3M),	fenv.h(3HEAD),	attributes(5),
       standards(5)

SunOS 5.10			  12 Jul 2006		      fetestexcept(3M)
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