Add randomisation helper functions

Makefile.am

@@ -25,6 +25,7 @@ UTIL_INCLUDE =  \
     nocopy.hpp		\
     point.hpp		\
     pool.hpp		\
+    random.hpp		\
     range.hpp		\
     region.hpp		\
     signal.hpp		\
@@ -51,6 +52,7 @@ UTIL_FILES   =		\
     matrix.cpp		\
     point.cpp		\
     pool.cpp		\
+    random.cpp		\
     range.cpp		\
     region.cpp		\
     signal.cpp		\

random.cpp

@@ -0,0 +1,42 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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 libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2010 Danny Robson <danny@blubinc.net>
+ */
+
+
+#include "random.hpp"
+
+#include "range.hpp"
+
+using namespace util;
+
+namespace util {
+    template <typename T>
+    T
+    random (void)
+        { return range<T>::UNLIMITED.rand (); }
+
+    template <typename T>
+    T&
+    randomise (T &val)
+        { return val = util::random<T> (); }
+}
+
+template double   util::random (void);
+template float    util::random (void);
+template uint64_t util::random (void);
+

random.hpp

@@ -0,0 +1,31 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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 libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2010 Danny Robson <danny@blubinc.net>
+ */
+
+#ifndef __UTIL_RANDOM_HPP
+#define __UTIL_RANDOM_HPP
+
+namespace util {
+    template <typename T>
+    T& randomise (T &);
+
+    template <typename T>
+    T random (void);
+}
+
+#endif