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FEGETENV(3P)               POSIX Programmer's Manual              FEGETENV(3P)

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
       fegetenv, fesetenv - get and set current floating-point environment
SYNOPSIS
       #include <fenv.h>
       int fegetenv(fenv_t *envp);
       int fesetenv(const fenv_t *envp);

DESCRIPTION
       The fegetenv() function shall attempt to store  the  current  floating-
       point environment in the object pointed to by envp.
       The  fesetenv()  function shall attempt to establish the floating-point
       environment represented by the object pointed to by envp. The  argument
       envp  shall point to an object set by a call to fegetenv() or feholdex-
       cept(), or equal a floating-point  environment  macro.  The  fesetenv()
       function  does  not  raise floating-point exceptions, but only installs
       the state of the floating-point status flags  represented  through  its
       argument.
RETURN VALUE
       If  the representation was successfully stored, fegetenv() shall return
       zero. Otherwise, it shall return a non-zero value.  If the  environment
       was  successfully established, fesetenv() 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
       feholdexcept(),  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                         FEGETENV(3P)