2009-07-08  Tobias Burnus  <burnus@net-b.de>

        PR fortran/40675
        * simplify.c (gfc_simplify_sign): Handle signed zero correctly.
        * trans-intrinsic.c (gfc_conv_intrinsic_sign): Support
        -fno-sign-zero.
        * invoke.texi (-fno-sign-zero): Add text regarding SIGN
        * intrinsic.

2009-07-08  Tobias Burnus  <burnus@net-b.de>

        PR fortran/40675
        * gfortran.dg/nosigned_zero_1.f90: New test.
        * gfortran.dg/nosigned_zero_2.f90: New test.

From-SVN: r149390