Did you try making the change on your end and see a change? It makes no difference on my end.
BTW, I had tried 'while' before making the original post. No difference there either. In fact, range() has better performance than 'while' in CPython for this code! - Chris On 4/17/06, Dave <[EMAIL PROTECTED]> wrote: > Use xrange instead of range and there should be a pretty good performance > improvement;) As is, your for loop creates a list of five million elements. > A simple while loop would also do the trick although it's not as clean to > look at. > > Dave > > [EMAIL PROTECTED] wrote: > Send users mailing list submissions to > users@lists.ironpython.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of users digest..." > > > Today's Topics: > > 1. Sin and Sqrt performance (Chris Trimble) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 17 Apr 2006 11:47:35 -0700 > From: "Chris Trimble" > Subject: [IronPython] Sin and Sqrt performance > To: "Discussion of IronPython" > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > IP doesn't do much better than CPython when using math.sin and > math.sqrt. However, same test in C# dominates (10ms.. as opposed to > upwards of 5 seconds in IP or CPy). Am I missing something here? > > Thanks, > > - Chris > > ----------------------------------- > > import time > from math import * > > def do_timing(f, reps): > start = time.time() > f(reps) > end = time.time() > print "%s (%d reps): %f" % (f.__name__, reps, end-start) > > > def py_fpfunc_test(reps): > j = 0.0 > for i in range(0, reps): > j += sin( j ) > j += sqrt( j ) > j +=2.72392032032; > print j > > def do_all_timing(): > do_timing(py_fpfunc_test, 5000000) > > do_all_timing() > print "" > > > ------------------------------ > > _______________________________________________ > users mailing list > users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > > > End of users Digest, Vol 21, Issue 18 > ************************************* > > > > ________________________________ > How low will we go? Check out Yahoo! Messenger's low PC-to-Phone call rates. > > > _______________________________________________ > users mailing list > users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > > > _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
