https://timsong-cpp.github.io/cppwp/linalg.algs.blas3.gemm
[linalg.algs.blas3.gemm]
linalgalgsgemm
https://timsong-cpp.github.io/cppwp/linalg.algs.blas3.xxmm
[linalg.algs.blas3.xxmm]
linalgalgs
https://timsong-cpp.github.io/cppwp/linalg.algs.blas3.trsm
[linalg.algs.blas3.trsm]
linalgalgstrsm