Changeset 734 for trunk/yat/utility/utility.cc

Timestamp:

Jan 6, 2007, 6:04:54 PM (16 years ago)

Author:

Peter

Message:

added vector*matrix and matrix*vector operators. fixes #18

File:

• trunk/yat/utility/utility.cc (modified) (3 diffs)

trunk/yat/utility/utility.cc

@@ -4 +4 @@
   Copyright (C) 2005 Jari Häkkinen, Markus Ringnér
   Copyright (C) 2006 Jari Häkkinen
+  Copyright (C) 2007 Peter Johansson
 
   This file is part of the yat library, http://lev.thep.lu.se/trac/yat
@@ -24 +25 @@
 
 #include "utility.h"
+
+#include "matrix.h"
 #include "stl_utility.h"
 #include "vector.h"
@@ -116 +119 @@
 
 
+  vector operator*(const matrix& m, const vector& v)
+  {
+    utility::vector res(m.rows());
+    for (size_t i=0; i<res.size(); ++i)
+      res(i) = vector(m,i) * v;
+    return res;
+  }
+
+
+  vector operator*(const vector& v, const matrix& m)
+  {
+    utility::vector res(m.columns());
+    for (size_t i=0; i<res.size(); ++i)
+      res(i) = v * vector(m,i,false);
+    return res;
+  }
+
 }}} // end of namespace utility, yat and thep