1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* basecvt.c
*
* Convert integer values specified on the command line from one input
* base to another. Accepts input and output bases between 2 and 36
* inclusive.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mpi.h"
#define IBASE 10
#define OBASE 16
#define USAGE "Usage: %s ibase obase [value]\n"
#define MAXBASE 64
#define MINBASE 2
int main(int argc, char *argv[])
{
int ix, ibase = IBASE, obase = OBASE;
mp_int val;
ix = 1;
if(ix < argc) {
ibase = atoi(argv[ix++]);
if(ibase < MINBASE || ibase > MAXBASE) {
fprintf(stderr, "%s: input radix must be between %d and %d inclusive\n",
argv[0], MINBASE, MAXBASE);
return 1;
}
}
if(ix < argc) {
obase = atoi(argv[ix++]);
if(obase < MINBASE || obase > MAXBASE) {
fprintf(stderr, "%s: output radix must be between %d and %d inclusive\n",
argv[0], MINBASE, MAXBASE);
return 1;
}
}
mp_init(&val);
while(ix < argc) {
char *out;
int outlen;
mp_read_radix(&val, argv[ix++], ibase);
outlen = mp_radix_size(&val, obase);
out = calloc(outlen, sizeof(char));
mp_toradix(&val, out, obase);
printf("%s\n", out);
free(out);
}
mp_clear(&val);
return 0;
}
|
