fetestexcept man page on HP-UX

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fetestexcept(3M)					      fetestexcept(3M)

       fetestexcept() - test floating-point exceptions

       The  function  determines  which of a specified subset of the floating-
       point exception flags are currently set.	 The excepts  argument	speci‐
       fies  the  floating-point  exception flags to be queried.  The argument
       can be constructed as a bitwise OR of the exception macros: and	repre‐
       sents all the floating-point exceptions.

       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

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

       For more information, see the at the following site:

       The function returns the bitwise OR of the exception macros correspond‐
       ing to the currently set floating-point exceptions included in excepts.

       No errors are defined.

       Call if invalid is set, then if overflow is set:

       feclearexcept(3M), fegetexceptflag(3M), fegettrapenable(3M), feraiseex‐
       cept(3M), fesetexceptflag(3M), fesettrapenable(3M), fenv(5).

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


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