- zhemv:: ORDER * UPLO * N * ALPHA * A * X * BETA * Y [LDA * INCX * INCY] -> F64VECTOR procedure
xHEMV performs the matrix-vector multiply-add operation of the form y := alpha*op( A )*x + beta*y, where op( X ) is one of op( A ) = A or op( A ) = A'.
ALPHA and BETA are scalars, and A is an N x N Hermitian matrix.
X and Y are N element vectors.