1 files changed, 67 insertions, 0 deletions
diff --git a/kpovmodeler/pmmath.cpp b/kpovmodeler/pmmath.cpp
new file mode 100644
index 00000000..8aedab76
--- /dev/null
+++ b/kpovmodeler/pmmath.cpp
@@ -0,0 +1,67 @@
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2000-2001 by Andreas Zehender
+    email                : zehender@kde.org
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  This program 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.                                   *
+*                                                                        *
+**************************************************************************/
+
+
+// some helper functions
+
+#include "pmmath.h"
+#include <math.h>
+
+bool approx( double v1, double v2, double epsilon )
+{
+   return fabs( v1 - v2 ) < epsilon;
+}
+
+bool approxZero( double v, double epsilon )
+{
+   return fabs( v ) < epsilon;
+}
+
+double rad2Deg( double rad )
+{
+   return rad / M_PI * 180.0;
+}
+
+double deg2Rad( double deg )
+{
+   return deg * M_PI / 180.0;
+}
+
+double pmatan( double s, double c )
+{
+   double a;
+   if( approxZero( c ) )
+   {
+      if( s > 0 )
+         a = M_PI_2;
+      else
+         a = -M_PI_2;
+   }
+   else
+      a = atan2( s, c );
+   
+   return a;
+}
+
+int pmpot( int x, int y )
+{
+   int i;
+   int result = 1;
+   for( i = 0; i < y; i++ )
+      result *= x;
+   return result;
+}