#19304: Fix hash function of rationals
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: critical | Milestone: sage-6.10
Component: misc | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers: Vincent Delecroix
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jdemeyer/fix_hash_function_of_rationals|
888430a0dd4fbfc4448d571f14ee546dab2f8ee7
Dependencies: | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:12 vdelecroix]:
> One failing doctest... got
> {{{
> sage: beta(1/2, 3*x)
> beta(3*x, 1/2)
> }}}
> on 64-bit too. Why is this related to this ticket?
Ginac reorders the arguments to `beta()` according to their hash. Symbolic
expressions (like `3*x`) have a "random" hash: it is different in
different runs of Sage. I'll change the doctest to something which does
not involve random hashes.
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Ticket URL: <http://trac.sagemath.org/ticket/19304#comment:14>
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