format_utils.h

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/*
 *  Copyright 2008-2014 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
 
#pragma once
 
#include <cusp/detail/config.h>
#include <cusp/detail/execution_policy.h>
 
#include <cstddef>
 
namespace cusp
{
 
/* \cond */
template <typename DerivedPolicy,
          typename OffsetArray,
          typename IndexArray>
void offsets_to_indices(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                        const OffsetArray& offsets,
                              IndexArray& indices);
/* \endcond */
 
template <typename OffsetArray,
          typename IndexArray>
void offsets_to_indices(const OffsetArray& offsets,
                              IndexArray& indices);
 
/* \cond */
template <typename DerivedPolicy,
          typename IndexArray,
          typename OffsetArray>
void indices_to_offsets(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                        const IndexArray& indices,
                              OffsetArray& offsets);
/* \endcond */
 
template <typename IndexArray,
          typename OffsetArray>
void indices_to_offsets(const IndexArray& indices,
                              OffsetArray& offsets);
 
/* \cond */
template <typename DerivedPolicy,
          typename MatrixType,
          typename ArrayType>
void extract_diagonal(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                      const MatrixType& A,
                            ArrayType& output);
/* \endcond */
 
template <typename MatrixType,
          typename ArrayType>
void extract_diagonal(const MatrixType& A,
                            ArrayType& output);
 
/* \cond */
template <typename DerivedPolicy,
          typename ArrayType1,
          typename ArrayType2>
size_t count_diagonals(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                       const size_t num_rows,
                       const size_t num_cols,
                       const ArrayType1& row_indices,
                       const ArrayType2& column_indices );
/* \endcond */
 
template <typename ArrayType1,
          typename ArrayType2>
size_t count_diagonals(const size_t num_rows,
                       const size_t num_cols,
                       const ArrayType1& row_indices,
                       const ArrayType2& column_indices);
 
/* \cond */
template <typename DerivedPolicy,
          typename ArrayType>
size_t compute_max_entries_per_row(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                                   const ArrayType& row_offsets);
/* \endcond */
 
template <typename ArrayType>
size_t compute_max_entries_per_row(const ArrayType& row_offsets);
 
/* \cond */
template <typename DerivedPolicy,
          typename ArrayType>
size_t compute_optimal_entries_per_row(const thrust::detail::execution_policy_base<DerivedPolicy> &exec,
                                       const ArrayType& row_offsets,
                                       float relative_speed = 3.0f,
                                       size_t breakeven_threshold = 4096);
/* \endcond */
 
template <typename ArrayType>
size_t compute_optimal_entries_per_row(const ArrayType& row_offsets,
                                       float relative_speed = 3.0f,
                                       size_t breakeven_threshold = 4096);
} // end namespace cusp
 
#include <cusp/detail/format_utils.inl>