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

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

#ifdef __cplusplus
extern "C" {
#endif

/*! \ingroup level2_module
*  \brief Sparse matrix vector multiplication using the GEBSR storage format.
*
*  \details
*  \p rocsparse_gebsrmv multiplies the scalar \f$\alpha\f$ with a sparse
*  \f$m \times n\f$ matrix, defined in GEBSR storage format, and the dense vector
*  \f$x\f$ and adds the result to the dense vector \f$y\f$ that is multiplied by
*  the scalar \f$\beta\f$, such that
*  \f[
*    y := \alpha \cdot op(A) \cdot x + \beta \cdot y,
*  \f]
*  with
*  \f[
*    op(A) = \left\{
*    \begin{array}{ll}
*        A,   & \text{if trans == rocsparse_operation_none}
*    \end{array}
*    \right.
*  \f]
*  and where \f$m = mb \times row\_block\_dim\f$ and \f$n = nb \times col\_block\_dim\f$.
*
*  \note
*  This function is non-blocking and executed asynchronously with respect to the host.
*  It can return before the actual computation has finished.
*
*  \note
*  Currently, only \p trans == \ref rocsparse_operation_none is supported.
*
*  \note
*  This routine supports execution in a hipGraph context.
*
*  @param[in]
*  handle      handle to the rocSPARSE library context queue.
*  @param[in]
*  dir         matrix storage of GEBSR blocks.
*  @param[in]
*  trans       matrix operation type.
*  @param[in]
*  mb          number of block rows of the sparse GEBSR matrix.
*  @param[in]
*  nb          number of block columns of the sparse GEBSR matrix.
*  @param[in]
*  nnzb        number of non-zero blocks of the sparse GEBSR matrix.
*  @param[in]
*  alpha       scalar \f$\alpha\f$.
*  @param[in]
*  descr       descriptor of the sparse GEBSR matrix. Currently, only
*              \ref rocsparse_matrix_type_general is supported.
*  @param[in]
*  bsr_val     array of \p nnzb blocks of the sparse GEBSR matrix.
*  @param[in]
*  bsr_row_ptr array of \p mb+1 elements that point to the start of every block row of
*              the sparse GEBSR matrix.
*  @param[in]
*  bsr_col_ind array of \p nnz containing the block column indices of the sparse
*              GEBSR matrix.
*  @param[in]
*  row_block_dim row block dimension of the sparse GEBSR matrix.
*  @param[in]
*  col_block_dim column block dimension of the sparse GEBSR matrix.
*  @param[in]
*  x           array of \p nb*col_block_dim elements (\f$op(A) = A\f$) or \p mb*row_block_dim
*              elements (\f$op(A) = A^T\f$ or \f$op(A) = A^H\f$).
*  @param[in]
*  beta        scalar \f$\beta\f$.
*  @param[inout]
*  y           array of \p mb*row_block_dim elements (\f$op(A) = A\f$) or \p nb*col_block_dim
*              elements (\f$op(A) = A^T\f$ or \f$op(A) = A^H\f$).
*
*  \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 mb, \p nb, \p nnzb, \p row_block_dim,
*              or \p col_block_dim is invalid.
*  \retval     rocsparse_status_invalid_pointer \p descr, \p alpha, \p bsr_val,
*              \p bsr_row_ind, \p bsr_col_ind, \p x, \p beta, or \p y pointer is invalid.
*  \retval     rocsparse_status_arch_mismatch the device is not supported.
*  \retval     rocsparse_status_not_implemented
*              \p trans != \ref rocsparse_operation_none or
*              \ref rocsparse_matrix_type != \ref rocsparse_matrix_type_general.
*
*  \par Example
*  This example performs a sparse matrix vector multiplication in GEBSR format.
*  \snippet example_rocsparse_gebsrmv.cpp doc example
*/
/**@{*/
ROCSPARSE_EXPORT
rocsparse_status rocsparse_sgebsrmv(rocsparse_handle          handle,
                                    rocsparse_direction       dir,
                                    rocsparse_operation       trans,
                                    rocsparse_int             mb,
                                    rocsparse_int             nb,
                                    rocsparse_int             nnzb,
                                    const float*              alpha,
                                    const rocsparse_mat_descr descr,
                                    const float*              bsr_val,
                                    const rocsparse_int*      bsr_row_ptr,
                                    const rocsparse_int*      bsr_col_ind,
                                    rocsparse_int             row_block_dim,
                                    rocsparse_int             col_block_dim,
                                    const float*              x,
                                    const float*              beta,
                                    float*                    y);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_dgebsrmv(rocsparse_handle          handle,
                                    rocsparse_direction       dir,
                                    rocsparse_operation       trans,
                                    rocsparse_int             mb,
                                    rocsparse_int             nb,
                                    rocsparse_int             nnzb,
                                    const double*             alpha,
                                    const rocsparse_mat_descr descr,
                                    const double*             bsr_val,
                                    const rocsparse_int*      bsr_row_ptr,
                                    const rocsparse_int*      bsr_col_ind,
                                    rocsparse_int             row_block_dim,
                                    rocsparse_int             col_block_dim,
                                    const double*             x,
                                    const double*             beta,
                                    double*                   y);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_cgebsrmv(rocsparse_handle               handle,
                                    rocsparse_direction            dir,
                                    rocsparse_operation            trans,
                                    rocsparse_int                  mb,
                                    rocsparse_int                  nb,
                                    rocsparse_int                  nnzb,
                                    const rocsparse_float_complex* alpha,
                                    const rocsparse_mat_descr      descr,
                                    const rocsparse_float_complex* bsr_val,
                                    const rocsparse_int*           bsr_row_ptr,
                                    const rocsparse_int*           bsr_col_ind,
                                    rocsparse_int                  row_block_dim,
                                    rocsparse_int                  col_block_dim,
                                    const rocsparse_float_complex* x,
                                    const rocsparse_float_complex* beta,
                                    rocsparse_float_complex*       y);

ROCSPARSE_EXPORT
rocsparse_status rocsparse_zgebsrmv(rocsparse_handle                handle,
                                    rocsparse_direction             dir,
                                    rocsparse_operation             trans,
                                    rocsparse_int                   mb,
                                    rocsparse_int                   nb,
                                    rocsparse_int                   nnzb,
                                    const rocsparse_double_complex* alpha,
                                    const rocsparse_mat_descr       descr,
                                    const rocsparse_double_complex* bsr_val,
                                    const rocsparse_int*            bsr_row_ptr,
                                    const rocsparse_int*            bsr_col_ind,
                                    rocsparse_int                   row_block_dim,
                                    rocsparse_int                   col_block_dim,
                                    const rocsparse_double_complex* x,
                                    const rocsparse_double_complex* beta,
                                    rocsparse_double_complex*       y);
/**@}*/

#ifdef __cplusplus
}
#endif

#endif /* ROCSPARSE_GEBSRMV_H */