centos man page for fegetenv

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 correspond-
       ing 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  argu-
       ment  envp  shall  point  to an object set by a call to fegetenv() or feholdexcept(), or equal a floating-point environment macro. The fes-
       etenv() 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 environ-
       ment 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 Technol-
       ogy -- 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)