[Bug middle-end/29335] transcendental functions with constant arguments should be resolved at compile-time

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

------- Comment #15 from ghazi at gcc dot gnu dot org  2006-10-25 20:44 -------
Subject: Bug 29335

Author: ghazi
Date: Wed Oct 25 20:44:09 2006
New Revision: 118042

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=118042
Log:
        PR middle-end/29335
        * builtins.c (fold_builtin_cbrt, fold_builtin_logarithm):
        Calculate compile-time constants using MPFR.
        (fold_builtin_1): Likewise handle BUILT_IN_ERF, BUILT_IN_ERFC,
        BUILT_IN_EXPM1 and BUILT_IN_LOG1P.

testsuite:
        * gcc.dg/torture/builtin-math-2.c (TESTIT): Use new helper macro.
        Add checks for log, log2, log10 and log1p.

        * gcc.dg/torture/builtin-math-3.c: Add checks for -0.0 everywhere
        we already test 0.0.  Add checks for expm1, log, log2, log10,
        log1p, cbrt, erf and erfc.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/torture/builtin-math-2.c
    trunk/gcc/testsuite/gcc.dg/torture/builtin-math-3.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29335