Added helper functions for determining if an internal format is an integer or floating point format. TRAC #23049 Signed-off-by: Jamie Madill Signed-off-by: Shannon Woods Author: Geoff Lang git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2374 736b8ea6-26fd-11df-bfd4-992fa37f6226