Hi Marc, On 2017-01-07, Marc Mezzarobba <m...@mezzarobba.net> wrote: > Another trick you can use if you are creating the polynomial rings > yourself and only need to do basic arithmetic is to define them by > > PolynomialRing_field(base, var, element_class=Polynomial_generic_dense) > > instead of PolynomialRing(base, var). You then loose a few features > specific to polynomial rings over fields, but you're basically saving a > call to Polynomial_absolute_number_field_dense.__init__() after every > operation, which can make basic arithmetic operations quite a bit > faster.
Wouldn't it be better to speed up Polynomial_absolute_number_field_dense.__init__(), or change the arithmetic operations by *avoiding* a call to __init__()? There are examples in SageMath's code where the result of an arithmetic operation X*Y is created by calling X.new(), which only calls .__new__() and initialises the resulting element by copying from X, without __init__(). I don't know whether I will have the time to have a look at the code, though. Best regards, Simon -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
