Annotation of embedaddon/php/ext/bcmath/libbcmath/src/num2str.c, revision 1.1.1.1
1.1 misho 1: /* num2str.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: /* Convert a numbers to a string. Base 10 only.*/
42:
43: char
44: *bc_num2str (num)
45: bc_num num;
46: {
47: char *str, *sptr;
48: char *nptr;
49: int index, signch;
50:
51: /* Allocate the string memory. */
52: signch = ( num->n_sign == PLUS ? 0 : 1 ); /* Number of sign chars. */
53: if (num->n_scale > 0)
54: str = (char *) safe_emalloc (1, num->n_len + num->n_scale, 2 + signch);
55: else
56: str = (char *) safe_emalloc (1, num->n_len, 1 + signch);
57: if (str == NULL) bc_out_of_memory();
58:
59: /* The negative sign if needed. */
60: sptr = str;
61: if (signch) *sptr++ = '-';
62:
63: /* Load the whole number. */
64: nptr = num->n_value;
65: for (index=num->n_len; index>0; index--)
66: *sptr++ = BCD_CHAR(*nptr++);
67:
68: /* Now the fraction. */
69: if (num->n_scale > 0)
70: {
71: *sptr++ = '.';
72: for (index=0; index<num->n_scale; index++)
73: *sptr++ = BCD_CHAR(*nptr++);
74: }
75:
76: /* Terminate the string and return it! */
77: *sptr = '\0';
78: return (str);
79: }
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