[Bug middle-end/21718] real.c rounding not perfect

[jsm28 at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21718

--- Comment #21 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Wed Nov 20 14:34:49 2013
New Revision: 205119

URL: http://gcc.gnu.org/viewcvs?rev=205119&root=gcc&view=rev
Log:
    PR middle-end/21718
    * real.c: Remove comment about decimal string conversion and
    rounding errors.
    (real_from_string): Use MPFR to convert nonzero decimal constant
    to REAL_VALUE_TYPE.

testsuite:
    * gcc.dg/float-exact-1.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/float-exact-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/real.c
    trunk/gcc/testsuite/ChangeLog