dger.f(3)

NAME
dger.f -

SYNOPSIS

  Functions/Subroutines
subroutine dger (M, N, ALPHA, X, INCX, Y, INCY, A, LDA)
DGER

Function/Subroutine Documentation

  subroutine dger (integerM, integerN, double precisionALPHA, double precision, dimension(*)X, integerINCX, double precision, dimension(*)Y, integerINCY, double precision, dimension(lda,*)A, integerLDA)

DGER Purpose:

     DGER   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.

Parameters:
    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 DOUBLE PRECISION.
               On entry, ALPHA specifies the scalar alpha.

    X

              X is 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.

    INCX

              INCX is INTEGER
               On entry, INCX specifies the increment for the elements of
               X. INCX must not be zero.

    Y

              Y is 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.

    INCY

              INCY is INTEGER
               On entry, INCY specifies the increment for the elements of
               Y. INCY must not be zero.

    A

              A is 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

              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 ).

Author:
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Date:
    November 2011

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.

Definition at line 131 of file dger.f.

Author

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