[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: olegendo@gcc.gnu.org
        ReportedBy: olegendo@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