FILTERS (3sciport)

Computes a correlation of two vectors (symmetric coefficients)

SYNOPSIS

  Call FILTERS( a, m, d, n, r )

Arguments

  a               Real vector.
                  A vector of filter symmetric coefficients.

  m               Integer.
                  The number of filter coefficients. However, because the
                  coefficient vector is symmetric only (m+1)/2 of its
                  elements will be accessed.

  d               Real vector.
                  An input data vector.

  n               Integer.
                  The number of data points.

  r               Real vector.
                  An output vector.

DESCRIPTION

  A subroutine FILTERS computes the same correlation as FILTERG except that
  it assumes the filter coefficient vector is symmetric.

  For equations and other information, see Volume 3: UNICOS Math and
  Scientific Library Reference Manual SR-2081 7.0, Cray Research, Inc.