Dan Stromberg <drsali...@gmail.com> wrote: > On Fri, Feb 25, 2022 at 8:12 AM BELAHCENE Abdelkader < > abdelkader.belahc...@enst.dz> wrote: > >> Hi, >> a lot of people think that C (or C++) is faster than python, yes I agree, >> but I think that's not the case with numpy, I believe numpy is faster than >> C, at least in some cases. >> > > This is all "last time I heard". > > numpy is written, in significant part, in Fortran. > > Fortran, especially for matrix math with variable dimensions, can be faster > than C. > > Fortran, (still last I heard) did not support pointers, which gives Fortran > compilers the chance to exploit a very nice class of optimizations you > can't use nearly as well in languages with pointers. > > I used to code C to be built with the "noalias" optimization, to get much > of the speed of Fortran in C. But it required using an error prone subset > of C without good error detection.
Pointers were introduced in Fortran 90. Neil. -- https://mail.python.org/mailman/listinfo/python-list
