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

zhpmv() void zhpmv ( char  uplo, int  n, doublecomplex  alpha, doublecomplex  ap[], doublecomplex  x[], int  incx, doublecomplex  beta, doublecomplex  y[], int  incy  ) y <- αAx + βy (Hermitian matrices in packed form) (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, supplied in packed form. Parameters [in] uplo Specifies whether the upper or lower triangular part of the matrix A is supplied in the packed array ap[] as follows: = 'U': The upper triangular part of A is supplied in ap[]. = 'L': The lower triangular part of A is supplied in ap[]. [in] n Order of the matrix A. (n >= 0) (If n = 0, returns without computation) [in] alpha Scalar alpha. [in] ap[] Array ap[lap] (lap >= n(n + 1)/2) n x n Hermitian matrix A in packed form. According to uplo, upper or lower triangular part is to be supplied. 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