Opened 6 years ago
Last modified 5 years ago
#17285 closed defect
CIF is missing many functions — at Version 2
Reported by: | jdemeyer | Owned by: | |
---|---|---|---|
Priority: | major | Milestone: | sage-6.6 |
Component: | basic arithmetic | Keywords: | |
Cc: | tmonteil, vdelecroix | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | #17130 | Stopgaps: |
Description (last modified by )
sage: CIF(cos(3/2)) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-31-4eae9038f0b3> in <module>() ----> 1 CIF(cos(Integer(3)/Integer(2))) /usr/local/src/sage-config/local/lib/python2.7/site-packages/sage/rings/complex_interval_field.pyc in __call__(self, x, im) 378 379 try: --> 380 return x._complex_mpfi_( self ) 381 except AttributeError: 382 pass /usr/local/src/sage-config/local/lib/python2.7/site-packages/sage/symbolic/expression.so in sage.symbolic.expression.Expression._complex_mpfi_ (build/cythonized/sage/symbolic/expression.cpp:8043)()
The reason that this fails is:
sage: CIF(3/2).cos() --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-13-96dae572cb36> in <module>() ----> 1 CIF(Integer(3)/Integer(2)).cos() /usr/local/src/sage-config/local/lib/python2.7/site-packages/sage/structure/element.so in sage.structure.element.Element.__getattr__ (build/cythonized/sage/structure/element.c:4068)() /usr/local/src/sage-config/local/lib/python2.7/site-packages/sage/structure/misc.so in sage.structure.misc.getattr_from_other_class (build/cythonized/sage/structure/misc.c:1631)() AttributeError: 'sage.rings.complex_interval.ComplexIntervalFieldElement' object has no attribute 'cos'
This problem was also encoutered on this ask thread.
Change History (2)
comment:1 Changed 6 years ago by
- Component changed from symbolics to basic arithmetic
- Description modified (diff)
- Summary changed from CIF(cos(3/2)) fails to CIF is missing many functions
comment:2 Changed 6 years ago by
- Cc tmonteil added
- Description modified (diff)
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Are you working on this ?
Is a solution involving the use of the (already defined)
.exp()
method acceptable on the short term (it may not lead to the thinest possible intervals), or do you think about some more accurate way of writing those ?