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Opened 15 years ago

Closed 12 years ago

#3 closed defect (fixed)

incomplete-gamma-tail very slow near the negative real axis

Reported by: rtoy Owned by: somebody
Priority: major Milestone:
Component: Core Version:
Keywords: Cc:

Description

Evaluation of incomplete-gamma-tail is very slow near the negative real axis. For (incomplete-gamma-tail 1/2 #c(-100 1d0)), we get an answer quickly. But replace that with #q(#q-100 #q1) and Oct now takes a long time. Change it to #q1q-1 instead of #q1, and Oct takes forever.

It's stuck in computing the continued fraction in CF-INCOMPLETE-TAIL which isn't valid on the negative real axis.

Change History (1)

comment:1 Changed 12 years ago by rtoy

Resolution: → fixed
Status: new → closed

This appears to have been fixed at some point. It's no longer slow for this test case.

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