Function Hbmv

* Matrix-vector product with a real symmetric or complex hermitian band matrix. Computes with A real symmetric and banded of order n and with bandwidth k. Y := alpha*A*X + beta*Y ARGUMENTS A float or complex n*n matrix X float or complex n*1 matrix Y float or co

(A, X, Y matrix.Matrix, alpha, beta matrix.Scalar, opts ...linalg.Option)