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

DGER(l) 					     BLAS routine					      DGER(l)

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

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

	   DOUBLE      PRECISION ALPHA

	   INTEGER     INCX, INCY, LDA, M, N

	   DOUBLE      PRECISION A( LDA, * ), X( * ), Y( * )

PURPOSE
       DGER   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  - DOUBLE PRECISION.
	      On entry, ALPHA specifies the scalar alpha.  Unchanged on exit.

       X      - DOUBLE PRECISION 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      - DOUBLE PRECISION 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      - DOUBLE PRECISION 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					      DGER(l)