On 2009-Aug-11 07:05:42 +1000, Peter Jeremy <peterjer...@optushome.com.au> wrote: >I thought I saw a csin() during the build so I'll investigate and >add code as necessary.
The relevant error in "devel/sage/sage/ext/fast_callable.pyx" is:
ImportError:
/usr/home/peter/sage-4.1.1.rc2/local/lib/python/site-packages/sage/ext/interpreters/wrapper_cdf.so:
Undefined symbol "csin"
csin is defined in libgfortran.so but for some reason, wrapper_cdf.so
isn't linked against it. I will need to learn more about the cython
build process to understand why.
>>> * Incorrect signs on imaginary parts
>>Are they very small imaginary parts?
>
>Unfortunately, no. I will have to investigate both this and the
>period_lattice.py test failures. Identical numeric parts with an
>incorrect sign is worrying.
As an example (devel/sage/sage/rings/number_field/number_field.py):
Expected:
[
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> -0.62996052494743... - 1.09112363597172*I,
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> -0.62996052494743... + 1.09112363597172*I,
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> 1.25992104989487
]
Got:
[
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> -0.629960524947437 + 1.09112363597172*I,
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> -0.629960524947436 - 1.09112363597172*I,
Ring morphism:
From: Number Field in a with defining polynomial x^3 - 2
To: Complex Field with 53 bits of precision
Defn: a |--> 1.25992104989487
]
I think I'll need some assistance with this one as I don't
understand the maths involved.
>>You just have to implement a "get_memory_usage" function in misc/somewhere.
>
>Thanks. I'll look into this. It shouldn't be too difficult.
The correct approach would be to call kvm_getprocs() and use
the returned ki_size field. Unfortunately, this means linking
against an additional shared library (-lkvm) and I'm not sure how
to manage this - the existing darwin code just adds .c, .h and .pyx
files and references them in sage-4.1.1.rc2/module_list.py - the
rest is done automatically and I'm not sure how to add a library.
--
Peter Jeremy
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