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Re: [PATCH] Update sparc ULPs.
From: "Joseph S. Myers" <joseph@codesourcery.com>
Date: Fri, 16 Nov 2012 17:40:10 +0000
> On Fri, 16 Nov 2012, David Miller wrote:
>
>> 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
So these are the only two failures remaining in the sparc testsuite,
both spurious underflows.
I haven't looked deeply into them yet, but I wonder if they are
related to these snippets you added to the long-double implementation
of these routines when those tests were added, for example from
math/s_clog10l.c:
====================
/* To avoid spurious underflows, use this definition to treat IBM long
double as approximating an IEEE-style format. */
#if LDBL_MANT_DIG == 106
# undef LDBL_EPSILON
# define LDBL_EPSILON 0x1p-106L
#endif
====================