rint.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*          http://www.eclipse.org/org/documents/epl-v10.html           *
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <[email protected]>                  *
*                  David Korn <[email protected]>                   *
*                   Phong Vo <[email protected]>                    *
*                                                                      *
***********************************************************************/
#include "FEATURE/uwin"

#if !_UWIN || _lib_ceil && _lib_floor && _lib_rint 
 
void _STUB_rint(){} 
 
#else

#include <math.h>

extern double rint(x)
double x;
{
	double d = floor((x+=.5));
	if(d==x && d/2.!=floor(d/2))
		d = d-1;
	return(d);
}
 
#endif