/*! \file */
/* ************************************************************************
 * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the Software), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#ifndef ROCSPARSE_COO2CSR_H
#define ROCSPARSE_COO2CSR_H

#include "../../rocsparse-types.h"
#include "rocsparse/rocsparse-export.h"

#ifdef __cplusplus
extern "C" {
#endif

/*! \ingroup conv_module
 *  \brief Convert a sparse COO matrix into a sparse CSR matrix.
 *
 *  \details
 *  \p rocsparse_coo2csr converts the COO array containing the row indices into a
 *  CSR array of row offsets that point to the start of every row.
 *  It is assumed that the COO row index array is sorted.
 *
 *  \p rocsparse_coo2csr can also be used to convert a COO array containing the column
 *  indices into a CSC array of column offsets that point to the start of every column.
 *  In this case it is assumed that the COO column index array is sorted instead.
 *
 *  \note
 *  This function is non-blocking and executed asynchronously with respect to the host.
 *  It can return before the actual computation has finished.
 *
 *  \note
 *  This routine supports execution in a hipGraph context.
 *
 *  @param[in]
 *  handle      handle to the rocSPARSE library context queue.
 *  @param[in]
 *  coo_row_ind array of \p nnz elements containing the row indices of the sparse COO
 *              matrix.
 *  @param[in]
 *  nnz         number of non-zero entries of the sparse CSR matrix.
 *  @param[in]
 *  m           number of rows of the sparse CSR matrix.
 *  @param[out]
 *  csr_row_ptr array of \p m+1 elements that point to the start of every row of the
 *              sparse CSR matrix.
 *  @param[in]
 *  idx_base    \ref rocsparse_index_base_zero or \ref rocsparse_index_base_one.
 *
 *  \retval     rocsparse_status_success the operation completed successfully.
 *  \retval     rocsparse_status_invalid_handle the library context was not initialized.
 *  \retval     rocsparse_status_invalid_size \p m or \p nnz is invalid.
 *  \retval     rocsparse_status_invalid_pointer \p coo_row_ind or \p csr_row_ptr
 *              pointer is invalid.
 *
 *  \par Example
 *  This example converts a COO matrix into a CSR matrix.
 *  \snippet example_rocsparse_coo2csr.cpp doc example
 */
ROCSPARSE_EXPORT
rocsparse_status rocsparse_coo2csr(rocsparse_handle     handle,
                                   const rocsparse_int* coo_row_ind,
                                   rocsparse_int        nnz,
                                   rocsparse_int        m,
                                   rocsparse_int*       csr_row_ptr,
                                   rocsparse_index_base idx_base);

#ifdef __cplusplus
}
#endif

#endif /* ROCSPARSE_COO2CSR_H */