Add cast to aliasing check. Otherwise, one of the geo tests fails to compile. Now there are some compiler warnings about aliasing and type-punned pointers that I don't understand.
Add cast to aliasing check.
Otherwise, one of the geo tests fails to compile. Now there are some compiler
warnings about aliasing and type-punned pointers that I don't understand.

pthulhu/eigen,cjntaylor/eigen,pthulhu/eigen,cjntaylor/eigen,cjntaylor/eigen,pthulhu/eigen,pthulhu/eigen,pthulhu/eigen,cjntaylor/eigen