Status: Accepted Owner: hazelnusse Labels: Type-Defect Priority-Medium NeedsReview
New issue 1475 by hazelnusse: New implementation of .eval in trigonometric functions, implementing sec, csc http://code.google.com/p/sympy/issues/detail?id=1475 I have been working on getting all of the trig functions in Sympy to behave as they do in Mathematica. Additionally, I will be implementing sec() and csc(), which currently do not exist. There seems to be a lot of code that isn't tested for, and just looks wrong, such as: [code] def _eval_rewrite_as_sin(self, arg): return 2*sin(x)**2/sin(2*x) def _eval_rewrite_as_cos(self, arg): return -cos(x + S.Pi/2)/cos(x) [/code] So I will be doing some general clean up of this sort of thing, and writing tests, etc. My git repository for this is: git://github.com/hazelnusse/sympy.git You should be able to do: git clone git://github.com/hazelnusse/sympy.git then: git co origin/branch If anybody can see major code overlap please let me know, especially if you are familiar with the other functionality that already exists in the .eval method of each of the existing trig functions. ~Luke -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-issues@googlegroups.com To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en -~----------~----~----~----~------~----~------~--~---
