2008/6/23 Michael Abshoff <[EMAIL PROTECTED]>: > Charles R Harris wrote: >> >> >> On Mon, Jun 23, 2008 at 5:58 PM, Michael Abshoff >> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >> wrote: >> >> Stéfan van der Walt wrote: >> > 2008/6/24 Stéfan van der Walt <[EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>>: >> >> It should be fairly easy to execute the example code, just to make >> >> sure it runs. We can always work out a scheme to test its validity >> >> later. >> >> Hi, >> >> > Mike Hansen just explained to me that the Sage doctest system >> sets the >> > random seed before executing each test. If we address >> > >> > a) Random variables >> >> we have some small extensions to the doctesting framework that allow us >> to mark doctests as "#random" so that the result it not checked. Carl >> Witty wrote some code that makes the random number generator in a lot of >> the Sage components behave consistently on all supported platforms. > > Hi, > >> >> But there is more than one possible random number generator. If you do >> that you are tied into one kind of generator and one kind of >> initialization implementation. >> >> Chuck >> > > Correct, but so far Carl has hooked into six out of the many random > number generators in the various components of Sage. This way we can set > a global seed and also more easily reproduce issues with algorithms > where randomness plays a role without being forced to be on the same > platform. There are still doctests in Sage where the randomness comes > from sources not in randgen (Carl's code), but sooner or later we will > get around to all of them.
Doesn't this mean you can't change your implementation of random number generators (for example choosing a different implementation of generation of normally-distributed random numbers, or replacing the Mersenne Twister) without causing countless doctests to fail meaninglessly? Anne _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
