Function Sbmv

* Matrix-vector product with a real symmetric band matrix. (L2) Sbmv(A, X, Y, alpha=1.0, beta=0.0, uplo=PLower, n=A.Cols, k=-1, ldA=A.Rows, incx=1, incy=1, offsetA=0, offsetx=0, offsety=0) Computes with A real symmetric and banded of order n and with bandwidth k. Y := alpha*A*X + beta*Y

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