#16439: Allow inverse trig functions to all take complex input
-------------------------+----------------------------
Reporter: kcrisman | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.3
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------+----------------------------
Where by complex I mean `complex` Python type.
{{{
sage: arccos(1+2*i)
arccos(2*I + 1)
sage: arccos(CC(1,2))
1.14371774040242 - 1.52857091948100*I
sage: arccos(CDF(1,2))
1.1437177404 - 1.52857091948*I
sage: arccos(complex(1,2))
<snip>
TypeError: Unable to convert x (='(1+2j)') to real number.
}}}
Presumably there are others of this type. Related:
{{{
sage: arcsec(-0.992725195401)
NaN
sage: arcsec(float(-0.992725195401))
<snip>
732 if parent is float:
733 return math.acos(1/x)
--> 734 return (1/x).arccos()
735
736 def _eval_numpy_(self, x):
AttributeError: 'complex' object has no attribute 'arccos'
}}}
but this may or may not be dealt with at #13246.
--
Ticket URL: <http://trac.sagemath.org/ticket/16439>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
