PROLOG

       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 .

IEEE/The Open Group                                   2017                               FEGETEXCEPTFLAG(3POSIX)