1 files changed, 36 insertions, 0 deletions
diff --git a/src/3rdparty/adaptagrams/libcola/conjugate_gradient.h b/src/3rdparty/adaptagrams/libcola/conjugate_gradient.h
new file mode 100644
index 0000000..e21cd16
--- /dev/null
+++ b/src/3rdparty/adaptagrams/libcola/conjugate_gradient.h
@@ -0,0 +1,36 @@
+/*
+ * vim: ts=4 sw=4 et tw=0 wm=0
+ *
+ * libcola - A library providing force-directed network layout using the 
+ *           stress-majorization method subject to separation constraints.
+ *
+ * Copyright (C) 2006-2008  Monash University
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * See the file LICENSE.LGPL distributed with the library.
+ *
+ * This library 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.
+ *
+*/
+
+#ifndef _CONJUGATE_GRADIENT_H
+#define _CONJUGATE_GRADIENT_H
+
+#include <valarray>
+
+double
+inner(std::valarray<double> const &x, 
+      std::valarray<double> const &y);
+
+void 
+conjugate_gradient(std::valarray<double> const &A, 
+           std::valarray<double> &x, 
+           std::valarray<double> const &b, 
+           unsigned const n, double const tol,
+           unsigned const max_iterations);
+#endif // _CONJUGATE_GRADIENT_H