Zgemm Zhemm Zher2k Zherk Zsymm Zsyr2k Ztrmm Ztrsm

Zhemm() Sub Zhemm ( Side As  String, Uplo As  String, M As  Long, N As  Long, Alpha As  Complex, A() As  Complex, B() As  Complex, Beta As  Complex, C() As  Complex, Optional Info As  Long  ) C <- αAB + βC or C <- αBA + βC (Hermitian matrix) (BLAS 3) Purpose This routine performs one of the matrix-matrix operations C <- αAB + βC or C <- αBA + βC where α and β are scalars, A is a Hermitian matrix, B and C are m x n matrices. Parameters [in] Side Specifies whether the Hermitian matrix A appears on the left or right in the operation as follows: = "L": C <- αAB + βC. = "R": C <- αBA + βC. [in] Uplo Specifies whether the upper or lower triangular part of the Hermitian matrix A is to be referenced as follows: = "U": Only the upper triangular part of the Hermitian matrix is to be referenced. = "L": Only the lower triangular part of the Hermitian matrix is to be referenced. [in] M Number of rows of the matrix C. (M >= 0) (If M = 0, returns without computation) [in] N Number of columns of the matrix C. (N >= 0) (If N = 0, returns without computation) [in] Alpha Scalar α. [in] A() Array A(LA1 - 1, LA2 - 1) (LA1 >= M, LA2 >= M (if Side = "L"), LA1 >= N, LA2 >= N (if Side = "R")) M x M Hermitian matrix A when Side = "L", or N x N Hermitian matrix A when Side = "R". Only the upper or lower triangular part is to be referenced in accordance with Uplo. [in] B() Array B(LB1 - 1, LB2 - 1) (LB1 >= M, LB2 >= N) M x N matrix B. [in] Beta Scalar β. When β is supplied as zero then C need not be set on input. [in,out] C() Array C(LC1 - 1, LC2 - 1) (LC1 >= M, LC2 >= N) [in] M x N matrix C. [out] M x N matrix αAB + βC (if Side = "L") or αBA + βC (if Side = "R"). [out] Info (Optional) = 0: Successful exit. = -1: The argument Side had an illegal value. (Side <> "L" nor "R") = -2: The argument Uplo had an illegal value. (Uplo <> "U" nor "L") = -3: The argument M had an illegal value. (M < 0) = -4: The argument N had an illegal value. (N < 0) = -6: The argument A() is invalid. = -7: The argument B() is invalid. = -9: The argument C() is invalid. Reference BLAS