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RedHat 9 (Linux i386) - man page for zgeru (redhat section l)

ZGERU(l)				   BLAS routine 				 ZGERU(l)

NAME
       ZGERU - perform the rank 1 operation   A := alpha*x*y' + A,

SYNOPSIS
       SUBROUTINE ZGERU ( M, N, ALPHA, X, INCX, Y, INCY, A, LDA )

	   COMPLEX*16	ALPHA

	   INTEGER	INCX, INCY, LDA, M, N

	   COMPLEX*16	A( LDA, * ), X( * ), Y( * )

PURPOSE
       ZGERU  performs the rank 1 operation

       where  alpha is a scalar, x is an m element vector, y is an n element vector and A is an m
       by n matrix.

PARAMETERS
       M      - INTEGER.
	      On entry, M specifies the number of rows of the matrix A.  M must be at least zero.
	      Unchanged on exit.

       N      - INTEGER.
	      On  entry,  N  specifies the number of columns of the matrix A.  N must be at least
	      zero.  Unchanged on exit.

       ALPHA  - COMPLEX*16	.
	      On entry, ALPHA specifies the scalar alpha.  Unchanged on exit.

       X      - COMPLEX*16	 array of dimension at least
	      ( 1 + ( m - 1 )*abs( INCX ) ).  Before entry, the incremented array X must  contain
	      the m element vector x.  Unchanged on exit.

       INCX   - INTEGER.
	      On  entry,  INCX	specifies  the	increment for the elements of X. INCX must not be
	      zero.  Unchanged on exit.

       Y      - COMPLEX*16	 array of dimension at least
	      ( 1 + ( n - 1 )*abs( INCY ) ).  Before entry, the incremented array Y must  contain
	      the n element vector y.  Unchanged on exit.

       INCY   - INTEGER.
	      On  entry,  INCY	specifies  the	increment for the elements of Y. INCY must not be
	      zero.  Unchanged on exit.

       A      - COMPLEX*16	 array of DIMENSION ( LDA, n ).
	      Before entry, the leading m by n part of the array A must  contain  the  matrix  of
	      coefficients. On exit, A is overwritten by the updated matrix.

       LDA    - INTEGER.
	      On  entry,  LDA specifies the first dimension of A as declared in the calling (sub)
	      program. LDA must be at least max( 1, m ).  Unchanged on exit.

	      Level 2 Blas routine.

	      -- Written on 22-October-1986.  Jack Dongarra, Argonne  National	Lab.   Jeremy  Du
	      Croz,  Nag  Central  Office.  Sven Hammarling, Nag Central Office.  Richard Hanson,
	      Sandia National Labs.

BLAS routine				 16 October 1992				 ZGERU(l)


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