SGER   performs the rank 1 operation


    A := alpha*x*y**T + A,


 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.

M

          M is INTEGER


           On entry, M specifies the number of rows of the matrix A.


           M must be at least zero.

N

          N is INTEGER


           On entry, N specifies the number of columns of the matrix A.


           N must be at least zero.

ALPHA

          ALPHA is REAL


           On entry, ALPHA specifies the scalar alpha.

X

          X is REAL array, dimension at least


           ( 1 + ( m - 1 )*abs( INCX ) ).


           Before entry, the incremented array X must contain the m


           element vector x.

INCX

          INCX is INTEGER


           On entry, INCX specifies the increment for the elements of


           X. INCX must not be zero.

Y

          Y is REAL array, dimension at least


           ( 1 + ( n - 1 )*abs( INCY ) ).


           Before entry, the incremented array Y must contain the n


           element vector y.

INCY

          INCY is INTEGER


           On entry, INCY specifies the increment for the elements of


           Y. INCY must not be zero.

A

          A is REAL array, 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

          LDA is 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 ).

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

  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.