1 files changed, 92 insertions, 0 deletions
diff --git a/gr-trellis/src/lib/base.cc b/gr-trellis/src/lib/base.cc
new file mode 100644
index 000000000..35ba2ea1d
--- /dev/null
+++ b/gr-trellis/src/lib/base.cc
@@ -0,0 +1,92 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <cstdio>
+#include <stdexcept>
+#include <cmath>
+#include "base.h"
+
+
+bool dec2base(unsigned int num, int base, std::vector<int> &s)
+{
+  int l = s.size();
+  unsigned int n=num;
+  for(int i=0;i<l;i++) {
+    s[l-i-1] = n % base; //MSB first
+    n /= base;
+  }
+  if(n!=0) {
+    printf("Number %d requires more than %d digits.",num,l);
+    return false;
+  }
+  else
+    return true;
+}
+
+
+unsigned int base2dec(const std::vector<int> &s, int base)
+{
+  int l = s.size();
+  unsigned int num=0;
+  for(int i=0;i<l;i++)
+      num=num*base+s[i];
+  return num;
+}
+
+
+bool dec2bases(unsigned int num, const std::vector<int> &bases, std::vector<int> &s)
+{
+  int l = s.size();
+  unsigned int n=num;
+  for(int i=0;i<l;i++) {
+      s[l-i-1] = n % bases[l-i-1];
+      n /= bases[l-i-1];
+  }
+  if(n!=0) {
+    printf("Number %d requires more than %d digits.",num,l);
+    return false;
+  }
+  else
+    return true;
+}
+
+
+
+unsigned int bases2dec(const std::vector<int> &s, const std::vector<int> &bases)
+{
+  int l = s.size();
+  unsigned int num=0;
+  for(int i=0;i<l;i++)
+      num = num * bases[i] + s[i];
+  return num;
+}
+
+
+
+
+
+
+
+
+
+
+