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FEGETROUND(P)		   POSIX Programmer's Manual		 FEGETROUND(P)

NAME
       fegetround, fesetround - get and set current rounding direction

SYNOPSIS
       #include <fenv.h>

       int fegetround(void);
       int fesetround(int round);

DESCRIPTION
       The fegetround() function shall get the current rounding direction.

       The fesetround() function shall establish the rounding direction repre‐
       sented by its argument round. If the argument is not equal to the value
       of a rounding direction macro, the rounding direction is not changed.

RETURN VALUE
       The fegetround() function shall return the value of the rounding direc‐
       tion macro representing the current rounding direction  or  a  negative
       value  if  there	 is  no	 such  rounding direction macro or the current
       rounding direction is not determinable.

       The fesetround() function shall return a zero value if and only if  the
       requested rounding direction was established.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       The following example saves, sets, and restores the rounding direction,
       reporting an error and  aborting	 if  setting  the  rounding  direction
       fails:

	      #include <fenv.h>
	      #include <assert.h>
	      void f(int round_dir)
	      {
		  #pragma STDC FENV_ACCESS ON
		  int save_round;
		  int setround_ok;
		  save_round = fegetround();
		  setround_ok = fesetround(round_dir);
		  assert(setround_ok == 0);
		  /* ... */
		  fesetround(save_round);
		  /* ... */
	      }

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       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			 FEGETROUND(P)
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