feholdexcept man page on HP-UX

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feholdexcept(3M)					      feholdexcept(3M)

NAME
       feholdexcept() - save floating-point environment

SYNOPSIS
DESCRIPTION
       The function saves the current floating-point environment in the object
       pointed to by the argument envp.	 This function also clears the	float‐
       ing-point exception flags and disables all traps.

       Use  with  to  hide spurious floating-point exceptions.	Use it with to
       hide all 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 HP 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 compiler option in order to pre‐
       vent optimizations 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
       The function returns a zero value, indicating the successful  disabling
       of any traps.

ERRORS
       No errors are defined.

EXAMPLES
       Store the current floating-point environment in hide spurious underflow
       exceptions, and continue on any floating-point  exceptions  that	 occur
       until the call to is encountered.

SEE ALSO
       fegetenv(3M), fesetenv(3M), feupdateenv(3M), fenv(5).

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

							      feholdexcept(3M)
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