#7742: add a compose function to sage
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Reporter: was | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.1
Component: basic arithmetic | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Comment(by colah):
Replying to [comment:1 hivert]:
> Replying to [ticket:7742 was]:
> > n = Integer(n)
>
> Converting to int should be sufficient... Or the implementation below
should'nt be very useful :-).
>
> > if n <= 0: return a
>
> I'd rather sage to raise a {{{ValueError}}} if {{{n < 0}}} than
returning silently a wrong value...
>
> Florent
We probably want to return an inverse function, if possible, when n<0...
I'm also wondering if there is a generalisation of this to all real
numbers.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7742#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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