derek.holloway
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180 lines
8.6 KiB
C
180 lines
8.6 KiB
C
/*! \file */
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/* ************************************************************************
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* Copyright (C) 2025 Advanced Micro Devices, Inc. All rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* ************************************************************************ */
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#ifndef HIPSPARSE_BSR2CSR_H
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#define HIPSPARSE_BSR2CSR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! \ingroup conv_module
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* \brief Convert a sparse BSR matrix into a sparse CSR matrix.
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*
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* \details
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* \p hipsparseXbsr2csr converts a BSR matrix into a CSR matrix. It is assumed
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* that \p csrValC, \p csrColIndC, and \p csrRowPtrC are allocated. Allocation size
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* for \p csrRowPtrC is computed by the number of block rows multiplied by the block
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* dimension plus one. Allocation for \p csrValC and \p csrColInd is computed by
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* the number of blocks in the BSR matrix multiplied by the block dimension squared.
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*
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* For example, given the BSR matrix using block dimension 2:
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* \f[
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* \left[
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* \begin{array}{c | c}
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* \begin{array}{c c}
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* 1 & 0 \\
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* 3 & 4
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* \end{array} &
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* \begin{array}{c c}
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* 0 & 2 \\
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* 0 & 0
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* \end{array} \\
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* \hline
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* \begin{array}{c c}
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* 5 & 0 \\
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* 1 & 2
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* \end{array} &
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* \begin{array}{c c}
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* 6 & 7 \\
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* 3 & 4
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* \end{array} \\
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* \end{array}
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* \right]
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* \f]
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*
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* The resulting CSR matrix row pointer, column indices, and values arrays are:
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* \f[
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* \begin{align}
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* \text{csrRowPtrC} &= \begin{bmatrix} 0 & 4 & 8 & 12 & 16 \end{bmatrix} \\
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* \text{csrColIndC} &= \begin{bmatrix} 0 & 1 & 2 & 3 & 0 & 1 & 2 & 3 & 0 & 1 & 2 & 3 & 0 & 1 & 2 & 3 \end{bmatrix} \\
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* \text{csrValC} &= \begin{bmatrix} 1 & 0 & 0 & 2 & 3 & 4 & 0 & 0 & 5 & 0 & 6 & 7 & 1 & 2 & 3 & 4 \end{bmatrix} \\
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* \end{align}
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* \f]
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*
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* \note
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* This function is non-blocking and executed asynchronously with respect to the host.
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* It can return before the actual computation has finished.
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*
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* @param[in]
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* handle handle to the hipSPARSE library context queue.
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* @param[in]
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* dirA the storage format of the blocks, \ref HIPSPARSE_DIRECTION_ROW or \ref HIPSPARSE_DIRECTION_COLUMN.
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* @param[in]
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* mb number of block rows in the sparse BSR matrix, which must be non-negative.
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* @param[in]
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* nb number of block columns in the sparse BSR matrix, which must be non-negative.
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* @param[in]
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* descrA descriptor of the sparse BSR matrix. Currently, only
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* \ref HIPSPARSE_MATRIX_TYPE_GENERAL is supported.
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* @param[in]
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* bsrValA array of \p nnzb*blockDim*blockDim containing the values of the sparse BSR matrix.
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* @param[in]
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* bsrRowPtrA array of \p mb+1 elements that point to the start of every block row of the
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* sparse BSR matrix.
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* @param[in]
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* bsrColIndA array of \p nnzb elements containing the block column indices of the sparse BSR matrix.
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* @param[in]
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* blockDim size of the blocks in the sparse BSR matrix. Must be positive.
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* @param[in]
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* descrC descriptor of the sparse CSR matrix. Currently, only
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* \ref HIPSPARSE_MATRIX_TYPE_GENERAL is supported.
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* @param[out]
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* csrValC array of \p nnzb*blockDim*blockDim elements containing the values of the sparse CSR matrix.
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* @param[out]
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* csrRowPtrC array of \p m+1 where \p m=mb*blockDim elements that point to the start of every row of the
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* sparse CSR matrix.
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* @param[out]
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* csrColIndC array of \p nnzb*blockDim*blockDim elements containing the column indices of the sparse CSR matrix.
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*
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* \retval HIPSPARSE_STATUS_SUCCESS the operation completed successfully.
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* \retval HIPSPARSE_STATUS_NOT_INITIALIZED \p handle is not initialized.
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* \retval HIPSPARSE_STATUS_INVALID_VALUE \p handle, \p descrA, \p descrC, \p bsrValA,
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* \p bsrRowPtrA, \p bsrColIndA, \p csrValC, \p csrRowPtrC, or \p csrColIndC is nullptr,
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* \p mb or \p nb is negative, or \p blockDim is invalid.
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*/
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/**@{*/
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseSbsr2csr(hipsparseHandle_t handle,
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hipsparseDirection_t dirA,
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int mb,
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int nb,
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const hipsparseMatDescr_t descrA,
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const float* bsrValA,
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const int* bsrRowPtrA,
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const int* bsrColIndA,
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int blockDim,
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const hipsparseMatDescr_t descrC,
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float* csrValC,
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int* csrRowPtrC,
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int* csrColIndC);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseDbsr2csr(hipsparseHandle_t handle,
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hipsparseDirection_t dirA,
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int mb,
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int nb,
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const hipsparseMatDescr_t descrA,
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const double* bsrValA,
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const int* bsrRowPtrA,
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const int* bsrColIndA,
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int blockDim,
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const hipsparseMatDescr_t descrC,
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double* csrValC,
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int* csrRowPtrC,
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int* csrColIndC);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseCbsr2csr(hipsparseHandle_t handle,
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hipsparseDirection_t dirA,
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int mb,
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int nb,
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const hipsparseMatDescr_t descrA,
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const hipComplex* bsrValA,
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const int* bsrRowPtrA,
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const int* bsrColIndA,
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int blockDim,
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const hipsparseMatDescr_t descrC,
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hipComplex* csrValC,
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int* csrRowPtrC,
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int* csrColIndC);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseZbsr2csr(hipsparseHandle_t handle,
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hipsparseDirection_t dirA,
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int mb,
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int nb,
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const hipsparseMatDescr_t descrA,
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const hipDoubleComplex* bsrValA,
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const int* bsrRowPtrA,
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const int* bsrColIndA,
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int blockDim,
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const hipsparseMatDescr_t descrC,
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hipDoubleComplex* csrValC,
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int* csrRowPtrC,
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int* csrColIndC);
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/**@}*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* HIPSPARSE_BSR2CSR_H */
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