This still doesn't pass on my AMD box. I guess the error is being
caused indirectly somehow, allowing the magnitude of the error to
increase. Anyhow, it fails on line 810 in
std.math.internal.gammafunction, which is:
assert(feqrel(betaIncompleteInv(0x1.ff1275ae5b939bcap-41, 4.6713e18,
0.0813601), 0x1.f97749d90c7adba8p-63L)>=real.mant_dig - 1);
For me, on my AMD box,
feqrel(betaIncompleteInv(0x1.ff1275ae5b939bcap-41, 4.6713e18,
0.0813601), 0x1.f97749d90c7adba8p-63L) == 25
If I change the assert to this level of leniency, then all unit tests
pass. I don't understand the codebase and what that line is meant to
test well enough, though, to know whether it's reasonable to make the
unit test that lenient.
On 11/28/2010 3:11 PM, dsource.org wrote:
phobos commit, revision 2202
user: Don Clugston
msg:
Increase tolerance of this test, now that we know that failure is caused by a
small imprecision in AMD's microcode.
http://www.dsource.org/projects/phobos/changeset/2202
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