zgbmv zgemv zgerc zgeru zhbmv zhemv zher zher2 zhpmv zhpr zhpr2 zsbmv zspmv zspr zspr2 zsymv zsyr zsyr2 ztbmv ztbsv ztpmv ztpsv ztrmv ztrsv

zhemv() void zhemv ( char  uplo, int  n, doublecomplex  alpha, int  lda, doublecomplex  a[], doublecomplex  x[], int  incx, doublecomplex  beta, doublecomplex  y[], int  incy  ) y <- αAx + βy (Hermitian matrices) (BLAS 2) Purpose This routine performs the matrix-vector operation y <- alpha*A*x + beta*y where alpha and beta are scalars, x and y are vectors and A is an n x n Hermitian matrix. Parameters [in] uplo Specifies whether the upper or lower triangular part of the array a[][] is to be referenced as follows: = 'U': Only the upper triangular part of a[][] is to be referenced. = 'L': Only the lower triangular part of a[][] is to be referenced. [in] n Order of the matrix A. (n >= 0) (If n = 0, returns without computation) [in] alpha Scalar alpha. [in] lda Leading dimension of the two dimensional array a[][]. (lda >= max(1, n)) [in] a[][] Array a[la][lda] (la >= n) n x n Hermitian matrix A. According to uplo, only upper or lower triangular part is to be referenced. The imaginary parts of the diagonal elements need not be set and are assumed to be zero. [in] x[] Array x[lx] (lx >= 1 + (n - 1)*abs(incx)) Input vector x. [in] incx Storage spacing between elements of x. (incx != 0) [in] beta Scalar beta. When beta is supplied as zero then y[] need not be set on input. [in,out] y[] Array y[ly] (ly >= 1 + (n - 1)*abs(incy)) [in] Input vector y. [out] Output vector. (= alpha*A*x + beta*y) [in] incy Storage spacing between elements of y. (incy != 0) Reference BLAS