#11781: Conversion from Zmod element to padic element raises "not a power of the
same prime" incorrectly, add conversion from residue_field
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Reporter: robharron | Owner: roed
Type: defect | Status: positive_review
Priority: minor | Milestone: sage-4.8
Component: padics | Keywords: padics, conversion
Work_issues: | Upstream: N/A
Reviewer: David Roe | Author: Robert Harron
Merged: | Dependencies:
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Changes (by newvalueoldvalue):
* reviewer: => David Roe
* author: => Robert Harron
Old description:
> Since mpz_cmp_ui returns 0 if equality holds, wrong 'if' condition was
> being used to check if Zmod element was in the right characteristic. Fix
> this in padic_ZZ_pX_CR_element.pyx and padic_ZZ_pX_CA_element.pyx.
>
> Also, enhancement: allow conversion from element of the residue_field of
> self (this really only affects unramified extensions).
New description:
Since mpz_cmp_ui returns 0 if equality holds, wrong 'if' condition was
being used to check if Zmod element was in the right characteristic. Fix
this in padic_ZZ_pX_CR_element.pyx and padic_ZZ_pX_CA_element.pyx.
Also, enhancement: allow conversion from element of the residue_field of
self (this really only affects unramified extensions).
'''Apply'''
[attachment:trac_11781_padics_conversion_Zmod_fix_and_res_field_enhance.v2.patch]
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11781#comment:9>
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