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       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of
       this interface may differ (consult the corresponding Linux  manual  page  for  details  of
       Linux behavior), or the interface may not be implemented on Linux.

NAME

       fegetexceptflag, fesetexceptflag — get and set floating-point status flags

SYNOPSIS

       #include <fenv.h>

       int fegetexceptflag(fexcept_t *flagp, int excepts);
       int fesetexceptflag(const fexcept_t *flagp, int excepts);

DESCRIPTION

       The functionality described on this reference page is aligned with the ISO C standard. Any
       conflict between the requirements described here and the ISO C standard is  unintentional.
       This volume of POSIX.1‐2017 defers to the ISO C standard.

       The   fegetexceptflag()   function   shall  attempt  to  store  an  implementation-defined
       representation of the states of the floating-point status flags indicated by the  argument
       excepts in the object pointed to by the argument flagp.

       The  fesetexceptflag()  function  shall  attempt  to  set  the floating-point status flags
       indicated by the argument excepts to the states stored in the object pointed to by  flagp.
       The  value pointed to by flagp shall have been set by a previous call to fegetexceptflag()
       whose second argument represented at least those floating-point exceptions represented  by
       the  argument  excepts.   This function does not raise floating-point exceptions, but only
       sets the state of the flags.

RETURN VALUE

       If the representation  was  successfully  stored,  fegetexceptflag()  shall  return  zero.
       Otherwise, it shall return a non-zero value. If the excepts argument is zero or if all the
       specified  exceptions  were  successfully  set,  fesetexceptflag()  shall   return   zero.
       Otherwise, it shall return a non-zero value.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       feclearexcept(), feraiseexcept(), fetestexcept()

       The Base Definitions volume of POSIX.1‐2017, <fenv.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1-2017, Standard for Information Technology -- Portable  Operating  System  Interface
       (POSIX),  The  Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by
       the Institute of Electrical and Electronics Engineers, Inc and The  Open  Group.   In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

       Any  typographical  or  formatting errors that appear in this page are most likely to have
       been introduced during the conversion of the source files to man page  format.  To  report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .