Annotation of embedaddon/php/ext/bcmath/libbcmath/src/zero.c, revision 1.1.1.1
1.1 misho 1: /* zero.c: bcmath library file. */
2: /*
3: Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
4: Copyright (C) 2000 Philip A. Nelson
5:
6: This library is free software; you can redistribute it and/or
7: modify it under the terms of the GNU Lesser General Public
8: License as published by the Free Software Foundation; either
9: version 2 of the License, or (at your option) any later version.
10:
11: This library is distributed in the hope that it will be useful,
12: but WITHOUT ANY WARRANTY; without even the implied warranty of
13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: Lesser General Public License for more details. (COPYING.LIB)
15:
16: You should have received a copy of the GNU Lesser General Public
17: License along with this library; if not, write to:
18:
19: The Free Software Foundation, Inc.
20: 59 Temple Place, Suite 330
21: Boston, MA 02111-1307 USA.
22:
23: You may contact the author by:
24: e-mail: philnelson@acm.org
25: us-mail: Philip A. Nelson
26: Computer Science Department, 9062
27: Western Washington University
28: Bellingham, WA 98226-9062
29:
30: *************************************************************************/
31:
32: #include <config.h>
33: #include <stdio.h>
34: #include <assert.h>
35: #include <stdlib.h>
36: #include <ctype.h>
37: #include <stdarg.h>
38: #include "bcmath.h"
39: #include "private.h"
40:
41: /* In some places we need to check if the number NUM is zero. */
42:
43: char
44: bc_is_zero (bc_num num TSRMLS_DC)
45: {
46: int count;
47: char *nptr;
48:
49: /* Quick check. */
50: if (num == BCG(_zero_)) return TRUE;
51:
52: /* Initialize */
53: count = num->n_len + num->n_scale;
54: nptr = num->n_value;
55:
56: /* The check */
57: while ((count > 0) && (*nptr++ == 0)) count--;
58:
59: if (count != 0)
60: return FALSE;
61: else
62: return TRUE;
63: }
64:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>