#4892: [with patch, needs work] Changing precision of a Complex can convert it
to
a real
------------------------------------+---------------------------------------
Reporter: cremona | Owner: rlm
Type: defect | Status: assigned
Priority: major | Milestone: sage-3.4.1
Component: basic arithmetic | Resolution:
Keywords: real complex precision |
------------------------------------+---------------------------------------
Changes (by mabshoff):
* summary: [with patch, positive review] Changing precision of a Complex
can convert it to a real => [with patch, needs
work] Changing precision of a Complex can
convert it to a real
Comment:
This patch causes the following doctest failure:
{{{
mabsh...@geom:/scratch/mabshoff/sage-3.3.alpha2$ ./sage -t -long
devel/sage/sage/modules/vector_double_dense.pyx
sage -t -long "devel/sage/sage/modules/vector_double_dense.pyx"
**********************************************************************
File
"/scratch/mabshoff/sage-3.3.alpha2/devel/sage/sage/modules/vector_double_dense.pyx",
line 531:
sage: _.parent()
Expected:
Vector space of dimension 3 over Real Field with 53 bits of precision
Got:
Vector space of dimension 3 over Complex Field with 53 bits of
precision
**********************************************************************
File
"/scratch/mabshoff/sage-3.3.alpha2/devel/sage/sage/modules/vector_double_dense.pyx",
line 535:
sage: _.parent()
Expected:
Vector space of dimension 3 over Real Field with 75 bits of precision
Got:
Vector space of dimension 3 over Complex Field with 75 bits of
precision
**********************************************************************
}}}
Given that this is vector_double_dense.pyx it seems odd.
Cheers,
Michael
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4892#comment:3>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
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