MSVC does not like using uninitialized SSE variables, so we have to pass all zeros.
MSVC does not like using uninitialized SSE variables, so we have to pass all zeros.

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