Add missing undefs

Reviewed-by: Tom Stellard <tom@stellard.net>


git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@211210 91177308-0d34-0410-b5e6-96231b3b80d8
Add pown

Reviewed-by: Tom Stellard <tom@stellard.net>


git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@211211 91177308-0d34-0410-b5e6-96231b3b80d8