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
code using it more readable. Also add a copySign static function that works more like the standard function by accepting the value and sign-carying value as arguments. No interesting logic here, but tests added to cover the basic API additions and make sure they do something plausible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219453 91177308-0d34-0410-b5e6-96231b3b80d8