[Bug fortran/29312] Errors in subnormal calculation

["kargl at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #3 from kargl at gcc dot gnu dot org  2006-10-09 20:55 -------
Subject: Bug 29312

Author: kargl
Date: Mon Oct  9 20:55:29 2006
New Revision: 117584

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117584
Log:
2006-10-06  Steven G. Kargl  <kargl@gcc.gnu.org>

        * gfortran.h: Define GFC_MPFR_TOO_OLD via mpfr version info.
        * arith.c (arctangent, gfc_check_real_range): Use it.   
        * simplify.c (gfc_simplify_atan2, gfc_simplify_exponent,
        gfc_simplify_log, gfc_simplify_nearest): Use it.

        PR fortran/15441
        PR fortran/29312
        * iresolve.c (gfc_resolve_rrspacing): Give rrspacing library
        routine hidden precision argument.
        (gfc_resolve_spacing): Give spacing library routine hidden
        precision, emin - 1, and tiny(x) arguments.
        * simplify.c (gfc_simplify_nearest): Remove explicit subnormalization.
        (gfc_simplify_rrspacing): Implement formula from Fortran 95 standard.
        (gfc_simplify_spacing): Implement formula from Fortran 2003 standard.
        * trans-intrinsic.c (gfc_intrinsic_map_t) Declare rrspacing and
        spacing via LIBF_FUNCTION
        (prepare_arg_info, call_builtin_clz, gfc_conv_intrinsic_spacing,
        gfc_conv_intrinsic_rrspacing): Remove functions.
        (gfc_conv_intrinsic_function): Remove calls to
        gfc_conv_intrinsic_spacing and gfc_conv_intrinsic_rrspacing.
        * f95-lang.c (gfc_init_builtin_functions): Remove __builtin_clz,
        __builtin_clzl and __builtin_clzll


2006-10-06  Steven G. Kargl  <kargl@gcc.gnu.org>

        PR fortran/15441
        PR fortran/29312
        * configure.ac: Add HAVE_LDEXPF, HAVE_LDEXP, and HAVE_LDEXPL
        * m4/spacing.m4: New file.  Use new HAVE_* defines.
        * m4/rrspacing.m4: Ditto.
        * Makefile.am: Handle new files.
        * configure: Regenerated.
        * Makefile.in: Ditto.
        * config.h.in: Ditto.
        * generated/spacing_r4.c: Generated.
        * generated/spacing_r8.c: Ditto.
        * generated/spacing_r10.c: Ditto.
        * generated/spacing_r16.c: Ditto.
        * generated/rrspacing_r4.c: Ditto.
        * generated/rrspacing_r8.c: Ditto.
        * generated/rrspacing_r10.c: Ditto.
        * generated/rrspacing_r16.c: Ditto.


Added:
    trunk/libgfortran/generated/rrspacing_r10.c
    trunk/libgfortran/generated/rrspacing_r16.c
    trunk/libgfortran/generated/rrspacing_r4.c
    trunk/libgfortran/generated/rrspacing_r8.c
    trunk/libgfortran/generated/spacing_r10.c
    trunk/libgfortran/generated/spacing_r16.c
    trunk/libgfortran/generated/spacing_r4.c
    trunk/libgfortran/generated/spacing_r8.c
    trunk/libgfortran/m4/rrspacing.m4
    trunk/libgfortran/m4/spacing.m4
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/arith.c
    trunk/gcc/fortran/f95-lang.c
    trunk/gcc/fortran/gfortran.h
    trunk/gcc/fortran/iresolve.c
    trunk/gcc/fortran/simplify.c
    trunk/gcc/fortran/trans-intrinsic.c
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/Makefile.am
    trunk/libgfortran/Makefile.in
    trunk/libgfortran/config.h.in
    trunk/libgfortran/configure
    trunk/libgfortran/configure.ac


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29312