On Wed, Nov 18, 2020 at 03:43:20PM -0600, Segher Boessenkool wrote: > Hi! > > On Sun, Nov 15, 2020 at 12:17:47PM -0500, Michael Meissner wrote: > > --- a/gcc/testsuite/gcc.target/powerpc/pr70117.c > > +++ b/gcc/testsuite/gcc.target/powerpc/pr70117.c > > @@ -9,9 +9,11 @@ > > 128-bit floating point, because the type is not enabled on those > > systems. */ > > #define LDOUBLE __ibm128 > > +#define IBM128_MAX ((__ibm128) 1.79769313486231580793728971405301199e+308L) > > This is the IEEE QP float number 43fefffffffffffff7ffffffffffff80 which > I very much doubt is the maximum finite double-double? See the 0 in the
Numbers without the 0 in the middle-end aren't valid, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95450#c6 for more details. Without the 0 in the middle the double double number rounded to double would require increasing the higher double, and as it is the largest representable finite number, that is not possible. Jakub
