[Bug libquadmath/81848] Add PowerPC support to libquadmath

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81848

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Fri Sep  1 22:10:57 2017
New Revision: 251613

URL: https://gcc.gnu.org/viewcvs?rev=251613&root=gcc&view=rev
Log:
2017-09-01  Michael Meissner  <meissner@linux.vnet.ibm.com>

        PR libquadmath/81848
        * configure.ac (powerpc*-linux*): Use attribute mode KC to create
        complex __float128 on PowerPC instead of attribute mode TC.
        * quadmath.h (__complex128): Likewise.
        * configure: Regenerate.
        * math/cbrtq.c (CBRT2): Use __float128 not long double.
        (CBRT4): Likewise.
        (CBRT2I): Likewise.
        (CBRT4I): Likewise.
        * math/j0q.c (U0): Likewise.
        * math/sqrtq.c (sqrtq): Don't depend on implicit conversion
        between __float128, instead explicitly convert the __float128
        value to long double because the PowerPC does not allow __float128
        and long double in the same expression.


Modified:
    trunk/libquadmath/ChangeLog
    trunk/libquadmath/configure
    trunk/libquadmath/configure.ac
    trunk/libquadmath/math/cbrtq.c
    trunk/libquadmath/math/j0q.c
    trunk/libquadmath/math/sqrtq.c
    trunk/libquadmath/quadmath.h