zherk - Hermitian Matrix Rank-k Update (CDB) VI

Owning Palette: Basic Linear Algebra Subroutines VIs

Requires: Full Development System

Calculates the rank–k update of the upper or lower triangular component of a Hermitian matrix.

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	operation A specifies the operation the VI performs on A. 0 Direct (default) 1 Conjugated & Transposed 2 Transposed
	A is a complex matrix of dimensions N × K.
	C is a Hermitian matrix. The VI updates the first N rows and columns of the upper or lower triangular component of C, depending on what you select for matrix C type. The number of rows and columns in input matrix C must be greater than or equal to N. The default is an N × N matrix with all elements equal to 0.
	matrix C type specifies whether to update the upper or lower triangular component of C. 2 Lower Triangular—The VI uses only the lower triangular component of C to calculate the update. 3 Upper Triangular (default)—The VI uses only the upper triangular component of C to calculate the update.
	alpha is a complex scalar that scales A*A^H or A^H*A, where A^H is the same as the conjugate transpose of A. The default is 1.
	beta is a real scalar that scales C. The default is 1.
	zherk is a complex matrix of the same dimensions as C. For the elements in the first N rows and N columns of the triangular component you select for matrix C type, zherk returns the results of the calculation. For any remaining elements, zherk returns the value of the element with the same index in C.
	error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

zherk - Hermitian Matrix Rank-k Update (CDB) Details

Refer to the BLAS (Basic Linear Algebra Subprograms) website at netlib.org for more information on BLAS functions.