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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 dif-
       fer (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 feholdexcept(),
       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, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  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 Stan-
       dard,  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)