[Bug target/54681] New: [SH] Add tanf approximation

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54681



             Bug #: 54681

           Summary: [SH] Add tanf approximation

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: enhancement

          Priority: P3

         Component: target

        AssignedTo: olege...@gcc.gnu.org

        ReportedBy: olege...@gcc.gnu.org

            Target: sh4*-*-*





When the sinf and cosf approximation 'fsca' is enabled on SH4 it can also be

used to approximate tanf, by calculating sinf (x) / cosf (x).

For example like that:



fsca   fpul,dr2

fdiv   fr3,fr2