update LP64 arith
update LP64 arith

letoh/ypsilon,paines/ypsilon,letoh/ypsilon,suhorng/ypsilon-fork,david135/ypsilon,paines/ypsilon,fujita-y/ypsilon,tectronics/ypsilon,suhorng/ypsilon-fork,paines/ypsilon,fujita-y/ypsilon,david135/ypsilon,suhorng/ypsilon-fork,david135/ypsilon,tectronics/ypsilon,letoh/ypsilon