pytorch

cf0268e5 - Modify cos to cosh in Vec256 (#20797)

Modify cos to cosh in Vec256 (#20797) Summary: Minor typo fix. Pull Request resolved: https://github.com/pytorch/pytorch/pull/20797 Differential Revision: D15469308 Pulled By: ezyang fbshipit-source-id: 3288ad69316e296e46d861737c5b09e0ea1e694b