gforth: gforth/engine/rint.c

1 :	anton	1.1	/* rint replacement
2 :
3 :			Copyright (C) 2002 Free Software Foundation, Inc.
4 :
5 :			This file is part of Gforth.
6 :
7 :			Gforth is free software; you can redistribute it and/or
8 :			modify it under the terms of the GNU General Public License
9 :			as published by the Free Software Foundation; either version 2
10 :			of the License, or (at your option) any later version.
11 :
12 :			This program is distributed in the hope that it will be useful,
13 :			but WITHOUT ANY WARRANTY; without even the implied warranty of
14 :			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 :			GNU General Public License for more details.
16 :
17 :			You should have received a copy of the GNU General Public License
18 :			along with this program; if not, write to the Free Software
19 :			Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20 :			*/
21 :
22 :			#ifdef i386
23 :			#define X (1024.1024.1024.1024.1024.1024.16.)
24 :			#else /* !defined(386) */
25 :			#define X (1024.1024.1024.1024.1024.*8.)
26 :			#endif /* !defined(386) */
27 :			double rint(double r)
28 :			{
29 :			if (r<0.0)
30 :			return (r+X)-X;
31 :			else
32 :			return (r-X)+X;
33 :			}
34 :