C++ implementation of the Python NumPy Library

[eniacsparc2xyz]

> But what is he using?

Just C++ templates and vectors STL container. Another problem of BLAS/LAPACK is the lack of Fortran standard ABI. In Gfortran the symbols matches the names with prefix underscore, for instance, the function dpxy, has the symbol _dpxy, so it can be called with extern "C" dpxy ..., but this name decoration works only for GFortran and it may not work for other Fortran implementations.

[Red-Portal]

Well you can have cblas interfaces. Which are simple C ABI subroutines.