On Jan 19, 2003, Alexandre Oliva <aoliva@redhat.com> wrote:

> the minimum normal exponent should be set such that all 107
> significant bits are available (and it's 107, not 106, as I
> implemented it) for normals.

It can't possibly be 107.  IRIX must be doing something wrong in
setting LDBL_MANT_DIG to 107, since there are only 53 bits of
precision in each double, even if you count the implicit 1s.  Besides,
the emulation I implemented worked correctly down to the least
significant bits with IRIX's printf, so I'm checking these bits in
too, per rth's approval.