Sebastian Haase wrote: >> This is now the behavior in SVN. Note that this is different from both >> Numeric (which gave an error) and numarray (which coerced to float32). >> >> But, it is consistent with how mixed-types are handled in calculations >> and is thus an easier rule to explain. >> >> Thanks for the testing. >> >> -Travis >> > > How hard would it be to change the rules back to the numarray behavior ? > It wouldn't be hard, but I'm not so sure that's a good idea. I do see the logic behind that approach and it is worthy of some discussion. I'll give my current opinion:
The reason I changed the behavior is to get consistency so there is one set of rules on mixed-type interaction to explain. You can always do what you want by force-casting your int32 arrays to float32. There will always be some people who don't like whichever behavior is selected, but we are trying to move NumPy in a direction of consistency with fewer exceptions to explain (although this is a guideline and not an absolute requirement). Mixed-type interaction is always somewhat ambiguous. Now there is a consistent rule for both universal functions and other functions (move to a precision where both can be safely cast to --- unless one is a scalar and then its precision is ignored). If you don't want that to happen, then be clear about what data-type should be used by casting yourself. In this case, we should probably not try and guess about what users really want in mixed data-type situations. -Travis ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
