08-19-2012
Thanks all
I was using Linux...new to that and scripting
lots more to learn...but thanks for pointing me in the right direction
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LEARN ABOUT CENTOS
fegetround
FEGETROUND(3P) POSIX Programmer's Manual FEGETROUND(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
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 represented 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 direction 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 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 FEGETROUND(3P)