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# LAPACK-3

## man page of LAPACK-3

### LAPACK-3: performs a very simple matrix-matrix multiplication

```NAME
LAPACK-3 - performs a very simple matrix-matrix multiplication

SYNOPSIS
SUBROUTINE ZLACRM( M, N, A, LDA, B, LDB, C, LDC, RWORK )

INTEGER        LDA, LDB, LDC, M, N

DOUBLE         PRECISION B( LDB, * ), RWORK( * )

COMPLEX*16     A( LDA, * ), C( LDC, * )

PURPOSE
ZLACRM performs a very simple matrix-matrix multiplication:
C := A * B,
where A is M by N and complex; B is N by N and real;
C is M by N and complex.

ARGUMENTS
M       (input) INTEGER
The number of rows of the matrix A and of the matrix C.
M >= 0.

N       (input) INTEGER
The number of columns and rows of the matrix B and
the number of columns of the matrix C.
N >= 0.

A       (input) COMPLEX*16 array, dimension (LDA, N)
A contains the M by N matrix A.

LDA     (input) INTEGER
The leading dimension of the array A. LDA >=max(1,M).

B       (input) DOUBLE PRECISION array, dimension (LDB, N)
B contains the N by N matrix B.

LDB     (input) INTEGER
The leading dimension of the array B. LDB >=max(1,N).

C       (input) COMPLEX*16 array, dimension (LDC, N)
C contains the M by N matrix C.

LDC     (input) INTEGER
The leading dimension of the array C. LDC >=max(1,N).

RWORK   (workspace) DOUBLE PRECISION array, dimension (2*M*N)

LAPACK auxiliary routine (versionMarch 2011                       LAPACK-3(3)
```