IR_filters.h

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//
//
/*
    Copyright (C) 2005- 2009, Hammersmith Imanet Ltd
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/
#include "stir/shared_ptr.h"
#include <vector>
#include <iostream>
#include <cmath>

START_NAMESPACE_STIR

/*\ingroup numerics
  \brief IIR filter
*/
template <class RandIter1, class RandIter2, class RandIter3, class RandIter4>
void inline IIR_filter(RandIter1 output_begin_iterator,
                       RandIter1 output_end_iterator,
                       const RandIter2 input_begin_iterator,
                       const RandIter2 input_end_iterator,
                       const RandIter3 input_factor_begin_iterator,
                       const RandIter3 input_factor_end_iterator,
                       const RandIter4 pole_begin_iterator,
                       const RandIter4 pole_end_iterator,
                       const bool if_initial_exists);

/*\ingroup numerics
  \brief IIR filter
*/
template <class RandIter1, class RandIter2, class RandIter3>
void inline FIR_filter(RandIter1 output_begin_iterator,
                       RandIter1 output_end_iterator,
                       const RandIter2 input_begin_iterator,
                       const RandIter2 input_end_iterator,
                       const RandIter3 input_factor_begin_iterator,
                       const RandIter3 input_factor_end_iterator,
                       const bool if_initial_exists);
END_NAMESPACE_STIR

#include "stir/numerics/IR_filters.inl"