Merge pull request dotnet/coreclr#7701 from rahku/arm64fixes
authorRahul Kumar <rahku@microsoft.com>
Tue, 18 Oct 2016 20:00:52 +0000 (13:00 -0700)
committerGitHub <noreply@github.com>
Tue, 18 Oct 2016 20:00:52 +0000 (13:00 -0700)
_isnanf is not defined for arm64 use isnan instead

Commit migrated from https://github.com/dotnet/coreclr/commit/1b05f1c2e523ebd88c20f00130ad87954e4f358d


Trivial merge