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## daxpy()

subroutine daxpy | ( | integer | n,
|  | double precision | da,
|  | double precision, dimension(*) | dx,
|  | integer | incx,
|  | double precision, dimension(*) | dy,
|  | integer | incy )

DAXPY

Purpose:

      !>
      !>    DAXPY constant times a vector plus a vector.
      !>    uses unrolled loops for increments equal to one.
      !>

Parameters

  [in]

  N

      !>          N is INTEGER
      !>         number of elements in input vector(s)
      !>

  [in]

  DA

      !>          DA is DOUBLE PRECISION
      !>           On entry, DA specifies the scalar alpha.
      !>

  [in]

  DX

      !>          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
      !>

  [in]

  INCX

      !>          INCX is INTEGER
      !>         storage spacing between elements of DX
      !>

  [in,out]

  DY

      !>          DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) )
      !>

  [in]

  INCY

      !>          INCY is INTEGER
      !>         storage spacing between elements of DY
      !>

Author
  Univ. of Tennessee
  Univ. of California Berkeley
  Univ. of Colorado Denver
  NAG Ltd.

Further Details:

      !>
      !>     jack dongarra, linpack, 3/11/78.
      !>     modified 12/3/93, array(1) declarations changed to array(*)
      !>