> > I'm not talking about the keyword in the ravel call, I'm talking about > the flag in a. Ah. Yes, I see. I misunderstood. Of course ravel ignores the FORTRAN flag (actually it doesn't because if a copy is not necessary it doesn't make one). The key is that the Python user doesn't need to care about the array flag unless they are interfacing to compiled code. That's the point of the flag. It's actually redundant because it could be checked every time it's needed. But, right now, it's kept updated so that the check is simple. The same is true with the C-CONTIGUOUS flag (called contiguous).
> The question is: do we *need* a fortran flag. No, you don't *need* the flag. But, it saves copying data to check it (look how many times ISFORTRAN is called in the code). Without the flag all of those cases would need to do a strides-check which is done in the UpdateFlags code. > I am argueing not, because the only need is for fortran contiguous > arrays to pass to fortran function, or translation from fortran > contiguous arrays to numpy arrays. What I am saying is that things are > unnecessarily complicated. I disagree. It's actually not that complicated. Even if it was compilcated to implement, the point is that it is now done. There is no sense ripping it out (that would be a huge pain and for what purpose?) The FORTRAN flag gives us a lot more flexibility when it comes to copying data or not. I think part of the complication is that you are misunderstanding some of the terms and the purposes of the keywords. > None of the LaPack stuff seems to use the Fortran stuff, they just > transpose and copy. It doesn't now only because I haven't had time to go through and change it, but it should. Look at scipy's LaPack interface. It (through f2py) uses the FORTRAN stuff extensively (much was borrowed from there in the first place). -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
