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DGER(1)				 BLAS routine			       DGER(1)

NAME
       DGER - performs 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.

ARGUMENTS
       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 con‐
	      tain 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.

FURTHER DETAILS
       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			 November 2008			       DGER(1)
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