+/*
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
+
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic 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 of the License, or
+ (at your option) any later version.
+
+ DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include <algorithm>
+
+
+#ifndef M_PI
+#define M_PI (3.14159265358979323846)
+#endif
+
+
+extern double db_to_linear (double db);
+extern double linear_to_db (double linear);
+
+
+template <class T>
+T clamp (T val, T minimum, T maximum)
+{
+ return std::max(std::min(val, maximum), minimum);
+}
+