BLAS Level 2 TRSV (triangular solve) for complex ndarrays
npm install ndarray-blas-trsv-complex 
BLAS Level 2 TRSV (triangular solve) for complex ndarrays
Note: This module assumes the triangular matrices are stored in a dense, square matrix. Packed triangular arrays are on the todo list.
##### trsv( A_r, A_i, x_r, x_i [, uplo] )
Calculate x <- A^-1 x for the real and complex parts A_r and A_i of the upper triangular matrix A using back-substitution. Data below the diagonal is ignored. If uplo is 'lo', uses the lower triangular portion of A and performs forward-substitution instead. Result overwrites the x vectors.