1 /* int2num.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
42 /* Convert an integer VAL to a bc number NUM. */
43
44 void
45 bc_int2num (num, val)
46 bc_num *num;
47 int val;
48 {
49 char buffer[30];
50 char *bptr, *vptr;
51 int ix = 1;
52 char neg = 0;
53
54 /* Sign. */
55 if (val < 0)
56 {
57 neg = 1;
58 val = -val;
59 }
60
61 /* Get things going. */
62 bptr = buffer;
63 *bptr++ = val % BASE;
64 val = val / BASE;
65
66 /* Extract remaining digits. */
67 while (val != 0)
68 {
69 *bptr++ = val % BASE;
70 val = val / BASE;
71 ix++; /* Count the digits. */
72 }
73
74 /* Make the number. */
75 bc_free_num (num);
76 *num = bc_new_num (ix, 0);
77 if (neg) (*num)->n_sign = MINUS;
78
79 /* Assign the digits. */
80 vptr = (*num)->n_value;
81 while (ix-- > 0)
82 *vptr++ = *--bptr;
83 }
84