On Dec 13, 2012, at 2:47 PM, Charles R Harris wrote: > On Thu, Dec 13, 2012 at 12:26 PM, Philip Semanchuk > <[email protected]>wrote: > >> Hi all, >> I'm porting some Fortran code that makes use of a number of BLAS and >> LAPACK functions, including dbdsqr(). I've found all of the functions I >> need via scipy.linalg.lapack.get_lapack_funcs/get_blas_funcs() except for >> dbdsqr(). >> >> I see that the numpy source code (I looked at numpy-1.6.0b2) contains >> dbdsqr() in numpy/linalg/dlapack_lite.c, but grep can't find that string in >> the binary distribution on my Mac nor on Linux. If it's buried in a numpy >> binary somewhere, I'm comfortable with using ctypes to call it, but I >> suspect it isn't. >> >> Can anyone point me to a cross-platform (OS X, Linux & Windows) way I can >> call this function? >> >> I'm unfortunately quite naïve about the math in the code I'm porting, so >> I'm porting the code blindly -- if you ask me what problem I'm trying to >> solve with dbdsqr(), I won't be able to explain. >> >> > Not all the functions in lapack_lite are exposed in numpy. You might want > to post on the scipy list, there have been recent additions supporting more > lapack functions.
Thanks, I'll check scipy. In numpy, I can see that lapack_litemodule.c is the layer that exposes select lapack functions via the Python interface, and dbdsqr isn't present in that file which is why I figured I would have to use ctypes to call it. I just can't figure out why dbdsqr appears in the source code but neither grep nor nm find any reference to it in the compiled binary. Cheers Philip _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
