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Re: [PATCH] Update sparc ULPs.
On Fri, 16 Nov 2012, David Miller wrote:
> Failure: pow (min_subnorm_value, min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (min_subnorm_value, -min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (max_value, min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (max_value, -min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (0.99, min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (0.99, -min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (1.01, min_subnorm_value) == 1.0: Exception "Underflow" set
> Failure: pow (1.01, -min_subnorm_value) == 1.0: Exception "Underflow" set
Those indicate that ldbl-128 needs a fix for bug 14811 (probably similar
to those for other versions, i.e. saturating small exponents to +/-
0x1p-128, but each version of pow is substantially different from the
others).
> Failure: Real part of: clog10 (0x0.ffffffffffffffffp0 + 0x0.ffffffffffffffffp-15000 i) == -2.354315103889861110220423157644627849164e-20 + 1.541165759405643564697852372112893034397e-4516 i: Exception "Underflow" set
> Failure: Real part of: clog (0x0.ffffffffffffffffp0 + 0x0.ffffffffffffffffp-15000 i) == -5.421010862427522170184200798202494495630e-20 + 3.548665303440282824232502561095699343814e-4516 i: Exception "Underflow" set
> Failure: yn (10, min_value) == -inf: Exception "Underflow" set
> Failure: yn (10, min_value) == -inf: Exception "Underflow" set
These all look like real bugs, but I don't have specific suggestions for
them.
--
Joseph S. Myers
joseph@codesourcery.com