/*! \file */
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#ifndef ROCSPARSE_CSR2HYB_H
#define ROCSPARSE_CSR2HYB_H

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

#ifdef __cplusplus
extern "C" {
#endif

/*! \ingroup conv_module
*  \brief Convert a sparse CSR matrix into a sparse HYB matrix.
*
*  \details
*  \p rocsparse_csr2hyb converts a CSR matrix into a HYB matrix. It is assumed
*  that \p hyb has been initialized with \ref rocsparse_create_hyb_mat().
*
*  \note
*  This function requires a significant amount of storage for the HYB matrix,
*  depending on the matrix structure.
*
*  \note
*  This function is blocking with respect to the host.
*
*  \note
*  This routine does not support execution in a hipGraph context.
*
*  @param[in]
*  handle          handle to the rocSPARSE library context queue.
*  @param[in]
*  m               number of rows of the sparse CSR matrix.
*  @param[in]
*  n               number of columns of the sparse CSR matrix.
*  @param[in]
*  descr           descriptor of the sparse CSR matrix. Currently, only
*                  \ref rocsparse_matrix_type_general is supported.
*  @param[in]
*  csr_val         array containing the values of the sparse CSR matrix.
*  @param[in]
*  csr_row_ptr     array of \p m+1 elements that point to the start of every row of the
*                  sparse CSR matrix.
*  @param[in]
*  csr_col_ind     array containing the column indices of the sparse CSR matrix.
*  @param[out]
*  hyb             sparse matrix in HYB format.
*  @param[in]
*  user_ell_width  width of the ELL part of the HYB matrix (only required if
*                  \p partition_type == \ref rocsparse_hyb_partition_user).
*  @param[in]
*  partition_type  \ref rocsparse_hyb_partition_auto (recommended),
*                  \ref rocsparse_hyb_partition_user, or
*                  \ref rocsparse_hyb_partition_max.
*
*  \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, \p n, or \p user_ell_width is invalid.
*  \retval     rocsparse_status_invalid_value \p partition_type is invalid.
*  \retval     rocsparse_status_invalid_pointer \p descr, \p hyb, \p csr_val,
*              \p csr_row_ptr, or \p csr_col_ind pointer is invalid.
*  \retval     rocsparse_status_memory_error the buffer for the HYB matrix could not be
*              allocated.
*  \retval     rocsparse_status_internal_error an internal error occurred.
*  \retval     rocsparse_status_not_implemented
*              \ref rocsparse_matrix_type != \ref rocsparse_matrix_type_general.
*
*  \par Example
*  This example converts a CSR matrix into a HYB matrix using user-defined partitioning.
*  \snippet example_rocsparse_csr2hyb.cpp doc example
*/
/**@{*/
ROCSPARSE_EXPORT
rocsparse_status rocsparse_scsr2hyb(rocsparse_handle          handle,
                                    rocsparse_int             m,
                                    rocsparse_int             n,
                                    const rocsparse_mat_descr descr,
                                    const float*              csr_val,
                                    const rocsparse_int*      csr_row_ptr,
                                    const rocsparse_int*      csr_col_ind,
                                    rocsparse_hyb_mat         hyb,
                                    rocsparse_int             user_ell_width,
                                    rocsparse_hyb_partition   partition_type);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_dcsr2hyb(rocsparse_handle          handle,
                                    rocsparse_int             m,
                                    rocsparse_int             n,
                                    const rocsparse_mat_descr descr,
                                    const double*             csr_val,
                                    const rocsparse_int*      csr_row_ptr,
                                    const rocsparse_int*      csr_col_ind,
                                    rocsparse_hyb_mat         hyb,
                                    rocsparse_int             user_ell_width,
                                    rocsparse_hyb_partition   partition_type);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_ccsr2hyb(rocsparse_handle               handle,
                                    rocsparse_int                  m,
                                    rocsparse_int                  n,
                                    const rocsparse_mat_descr      descr,
                                    const rocsparse_float_complex* csr_val,
                                    const rocsparse_int*           csr_row_ptr,
                                    const rocsparse_int*           csr_col_ind,
                                    rocsparse_hyb_mat              hyb,
                                    rocsparse_int                  user_ell_width,
                                    rocsparse_hyb_partition        partition_type);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_zcsr2hyb(rocsparse_handle                handle,
                                    rocsparse_int                   m,
                                    rocsparse_int                   n,
                                    const rocsparse_mat_descr       descr,
                                    const rocsparse_double_complex* csr_val,
                                    const rocsparse_int*            csr_row_ptr,
                                    const rocsparse_int*            csr_col_ind,
                                    rocsparse_hyb_mat               hyb,
                                    rocsparse_int                   user_ell_width,
                                    rocsparse_hyb_partition         partition_type);
/**@}*/

#ifdef __cplusplus
}
#endif

#endif /* ROCSPARSE_CSR2HYB_H */