From Art Tevs, Added log2 function.
From Art Tevs, Added log2 function.


jtorresfabra/osg,tomasthoresen/osg,scrawl/osg,scrawl/osg,tomasthoresen/osg,artoolkit/osg,scrawl/osg,scrawl/osg,marchelbling/osg,openscenegraph/osg,openscenegraph/osg,openscenegraph/osg,artoolkit/osg,marchelbling/osg,openscenegraph/osg,jtorresfabra/osg,tomasthoresen/osg,jtorresfabra/osg,marchelbling/osg,artoolkit/osg,jtorresfabra/osg,artoolkit/osg,marchelbling/osg,tomasthoresen/osg