NAME

       feholdexcept - save current floating-point environment

SYNOPSIS

       #include <fenv.h>

       int feholdexcept(fenv_t *envp);

DESCRIPTION

       The feholdexcept() function shall save the current floating-point environment in the object pointed to by
       envp,  clear  the  floating-point  status  flags, and then install a non-stop (continue on floating-point
       exceptions) mode, if available, for all floating-point exceptions.

RETURN VALUE

       The feholdexcept() function shall return zero if and only if non-stop floating-point  exception  handling
       was successfully installed.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       The  feholdexcept() function should be effective on typical IEC 60559:1989 standard implementations which
       have the default non-stop mode and at least one  other  mode  for  trap  handling  or  aborting.  If  the
       implementation provides only the non-stop mode, then installing the non-stop mode is trivial.

FUTURE DIRECTIONS

       None.

SEE ALSO

       fegetenv() , fesetenv() , feupdateenv() , the Base Definitions volume of IEEE Std 1003.1-2001, <fenv.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE/The Open Group                                   2003                                       FEHOLDEXCEPT(P)