Changes between Version 4 and Version 5 of Ticket #9706, comment 112
- Timestamp:
- 12/09/13 20:26:58 (7 years ago)
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Ticket #9706, comment 112
v4 v5 20 20 21 21 You evaluate numerical expressions for n in NN with recursion. this is favorable for chebyshev polynomials, but not for all ortho polys you can evaluate numeric values in O(log n). You have already problems with the legendre polynomials, since the coefficients depend on n, and the recursion is not stable. Thus other evaluation methods should be used. Thats the reason why _evalf_ with mpmath should come first. 22 In case of chebyshev I catched this with call of the recursion.22 In case of chebyshev I catched this with an explicit call of the recursion in _evalf_. 23 23 24 24 The _old_maxima_ method is used for some oddballs, where the only useful implementation is in maxima, and for some special cases. So removing is probably not a good idea.
