1 /* -*- c++ -*- */
2 /*
3 * Copyright 2002,2012 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #include <gnuradio/trellis/base.h>
24 #include <cmath>
25 #include <cstdio>
26 #include <stdexcept>
27
28 namespace gr {
29 namespace trellis {
30
dec2base(unsigned int num,int base,std::vector<int> & s)31 bool dec2base(unsigned int num, int base, std::vector<int>& s)
32 {
33 int l = s.size();
34 unsigned int n = num;
35 for (int i = 0; i < l; i++) {
36 s[l - i - 1] = n % base; // MSB first
37 n /= base;
38 }
39 if (n != 0) {
40 printf("Number %d requires more than %d digits.", num, l);
41 return false;
42 } else
43 return true;
44 }
45
base2dec(const std::vector<int> & s,int base)46 unsigned int base2dec(const std::vector<int>& s, int base)
47 {
48 int l = s.size();
49 unsigned int num = 0;
50 for (int i = 0; i < l; i++)
51 num = num * base + s[i];
52 return num;
53 }
54
dec2bases(unsigned int num,const std::vector<int> & bases,std::vector<int> & s)55 bool dec2bases(unsigned int num, const std::vector<int>& bases, std::vector<int>& s)
56 {
57 int l = s.size();
58 unsigned int n = num;
59 for (int i = 0; i < l; i++) {
60 s[l - i - 1] = n % bases[l - i - 1];
61 n /= bases[l - i - 1];
62 }
63 if (n != 0) {
64 printf("Number %d requires more than %d digits.", num, l);
65 return false;
66 } else
67 return true;
68 }
69
bases2dec(const std::vector<int> & s,const std::vector<int> & bases)70 unsigned int bases2dec(const std::vector<int>& s, const std::vector<int>& bases)
71 {
72 int l = s.size();
73 unsigned int num = 0;
74 for (int i = 0; i < l; i++)
75 num = num * bases[i] + s[i];
76 return num;
77 }
78
79 } /* namespace trellis */
80 } /* namespace gr */
81