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fesetexceptflag(3M)					   fesetexceptflag(3M)

NAME
       fesetexceptflag() - set floating-point exception flags

SYNOPSIS
   HP Integrity Server Only
   PA-RISC Only
DESCRIPTION
       The  function  sets  the	 status for the floating-point exception flags
       indicated by the argument excepts to the states stored  in  the	object
       pointed	to by flagp.  The value of *flagp must have been set by a pre‐
       vious call to whose second argument represented at least those	float‐
       ing-point  exceptions  represented  by the argument excepts; otherwise,
       the effect on the indicated floating-point  exception  flags  is	 unde‐
       fined.	This  function	does  not  raise exceptions, but only sets the
       state of the flags (hence no traps will be taken).  The	excepts	 argu‐
       ment can be constructed as a bitwise OR of the floating-point exception
       macros: and represents all the floating-point exceptions.

USAGE
       To use this function, compile either with the default  option  or  with
       the and options.	 Make sure your program includes

       For  Integrity  servers,	 specify on the compiler command line or place
       the call to this function under the effect of an affirmative pragma:

       If the pragma is placed outside of  any	top-level  declarations	 in  a
       file, the pragma will apply to all declarations in the compilation fol‐
       lowing the pragma until another pragma is encountered or until the  end
       of the file is reached.

       If  the	pragma	is placed at the beginning of a block (compound state‐
       ment), the pragma will apply until another  pragma  is  encountered  or
       until the end of the block is reached.

       For  PA-RISC,  you  might need to use the in order to prevent optimiza‐
       tions that can undermine the specified behavior of this function.

       Link in the math library by specifying on the compiler or  linker  com‐
       mand line.

       For more information, see the at the following site:

RETURN VALUE
   Integrity Server Only
       This function always returns 0, indicating that all the specified flags
       were successfully set to the appropriate state.

   PA-RISC Only
       None.

ERRORS
       No errors are defined.

EXAMPLES
       Use to save the current state of two  floating-point  exception	flags.
       Later, use to restore the saved state.

SEE ALSO
       feclearexcept(3M), fegetexceptflag(3M), fegettrapenable(3M), feraiseex‐
       cept(3M), fesettrapenable(3M), fetestexcept(3M), fenv(5).

STANDARDS CONFORMANCE
       : ISO/IEC C99 (including Annex  F,  "IEC	 60559	floating-point	arith‐
       metic")

							   fesetexceptflag(3M)

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