◆ Zgemm()

Sub Zgemm	(	Transa As	String,
		Transb As	String,
		M As	Long,
		N As	Long,
		K As	Long,
		Alpha As	Complex,
		A() As	Complex,
		B() As	Complex,
		Beta As	Complex,
		C() As	Complex,
		Optional Info As	Long
	)

C <- αOp(A)Op(B) + βC (Op(X) = X, X^T or X^H) (complex matrices) (BLAS 3)

Purpose: This routine performs one of the matrix-matrix operations
C <- αOp(A)Op(B) + βC

where Op(X) is one of
Op(X) = X, Op(X) = X^T or Op(X) = X^H

where α and β are scalars and A, B and C are matrices, with Op(A) an m x k matrix, Op(B) a k x n matrix and C an m x n matrix.

Parameters

[in]	Transa	Specifies the form of Op(A) to be used in the matrix multiplication as follows: = "N": Op(A) = A = "T": Op(A) = A^T = "C": Op(A) = A^H
[in]	Transb	Specifies the form of Op(B) to be used in the matrix multiplication as follows: = "N": Op(B) = B = "T": Op(B) = B^T = "C": Op(B) = B^H
[in]	M	Number of rows of the matrix Op(A) and of the matrix C. (M >= 0) (If M = 0, returns without computation)
[in]	N	Number of columns of the matrix Op(B) and of the matrix C. (N >= 0) (If N = 0, returns without computation)
[in]	K	Number of columns of the matrix Op(A) and of rows of the matrix Op(B) (K >= 0)
[in]	Alpha	Scalar α.
[in]	A()	Array A(LA1 - 1, LA2 - 1) (LA1 >= M, LA2 >= K (if Transa = "N"), LA1 >= K, LA2 >= M (if Transa = "T" or "C")) Matrix A.
[in]	B()	Array B(LB1 - 1, LB2 - 1) (LB1 >= K, LB2 >= N (if Transb = "N"), LB1 >= N, LB2 >= K (if Transb = "T" or "C")) 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] Matrix C. [out] Matrix αOp(A)Op(B) + βC.
[out]	Info	(Optional) = 0: Successful exit. = -1: The argument Transa had an illegal value. (Transa <> "N", "T" nor "C") = -2: The argument Transb had an illegal value. (Transb <> "N", "T" nor "C") = -3: The argument M had an illegal value. (M < 0) = -4: The argument N had an illegal value. (N < 0) = -5: The argument K had an illegal value. (K < 0) = -7: The argument A() is invalid. = -8: The argument B() is invalid. = -10: The argument C() is invalid.

Reference: BLAS