Re: [eigen] Use Eigen as BLAS

[Gael Guennebaud <gael.guennebaud@xxxxxxxxx>]

Yes and no. There is one BLAS API in eigen/blas, but its goal is to compile a BLAS compatible library. Converting it to a header-only lib would be a bad idea because BLAS functions are not templated, so you would end up compiling the entire blas every time... Then if you are looking for something like:

MatrixXd A, B, C;

gemm(A,B,alpha,C,1);

I'm not sure to see the point.

gael

On Sat, Feb 18, 2017 at 11:43 AM, Mathieu Dutour <mathieu.dutour@xxxxxxxxx> wrote:

I have an existing C program that is using BLAS/LAPACK as

external linear algebra library.

For various reason I would like to transform this into a header

based C++ program with no external dependency to dynamic

library.

Obviously Eigen can fit such a role as it has all the functionality

of BLAS.

But my question is does there exist a way to have BLAS/LAPACK

like API from Eigen? At present it seems to be no, but maybe

someone has done it.

  Mathieu