* trans.c (tree_transform): Use real_ldexp not REAL_VALUE_LDEXP.
        * config/dsp16xx/dsp16xx.md (fixuns_trunchfhi2): Use real_2expN.
        * config/mips/mips.md (fixuns_truncdfsi2): Likewise.
        (fixuns_truncdfdi2, fixuns_truncsfsi2, fixuns_truncsfdi2): Likewise.
        * config/m68k/m68k.c (floating_exact_log2): Use real_exponent
        and real_2expN instead of a loop.
        * doc/tm.texi (REAL_VALUE_LDEXP): Remove.
        (REAL_VALUE_RNDZINT, REAL_VALUE_UNSIGNED_RNDZINT): Remove.

From-SVN: r57245