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218 lines
10 KiB
C
218 lines
10 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_GTSV_H
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#define HIPSPARSE_GTSV_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! \ingroup precond_module
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* \details
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* \p hipsparseSgtsv2_bufferSizeExt returns the size of the temporary storage buffer
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* that is required by \ref hipsparseSgtsv2 "hipsparseXgtsv2()". The temporary
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* storage buffer must be allocated by the user.
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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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* \note
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* This routine supports execution in a hipGraph context.
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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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* m size of the tridiagonal linear system. Must be at least 2.
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* @param[in]
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* n number of columns in the dense matrix B. Must be non-negative.
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* @param[in]
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* dl lower diagonal of the tridiagonal system. The first entry must be zero.
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* @param[in]
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* d main diagonal of the tridiagonal system.
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* @param[in]
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* du upper diagonal of the tridiagonal system. The last entry must be zero.
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* @param[in]
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* B dense matrix of size ( \p ldb, \p n ).
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* @param[in]
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* ldb leading dimension of B. Must satisfy \p ldb >= max(1, m).
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* @param[out]
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* pBufferSizeInBytes number of bytes of the temporary storage buffer required by
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* \ref hipsparseSgtsv2 "hipsparseXgtsv2()".
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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 dl, \p d, \p du, \p B, or
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* \p pBufferSizeInBytes is nullptr, \p m is less than 2, \p n is negative,
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* or \p ldb is invalid.
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* \retval HIPSPARSE_STATUS_INTERNAL_ERROR an internal error occurred.
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*/
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/**@{*/
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseSgtsv2_bufferSizeExt(hipsparseHandle_t handle,
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int m,
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int n,
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const float* dl,
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const float* d,
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const float* du,
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const float* B,
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int ldb,
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size_t* pBufferSizeInBytes);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseDgtsv2_bufferSizeExt(hipsparseHandle_t handle,
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int m,
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int n,
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const double* dl,
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const double* d,
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const double* du,
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const double* B,
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int ldb,
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size_t* pBufferSizeInBytes);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseCgtsv2_bufferSizeExt(hipsparseHandle_t handle,
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int m,
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int n,
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const hipComplex* dl,
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const hipComplex* d,
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const hipComplex* du,
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const hipComplex* B,
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int ldb,
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size_t* pBufferSizeInBytes);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseZgtsv2_bufferSizeExt(hipsparseHandle_t handle,
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int m,
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int n,
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const hipDoubleComplex* dl,
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const hipDoubleComplex* d,
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const hipDoubleComplex* du,
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const hipDoubleComplex* B,
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int ldb,
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size_t* pBufferSizeInBytes);
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/**@}*/
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/*! \ingroup precond_module
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* \brief Tridiagonal solver with pivoting
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*
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* \details
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* \p hipsparseXgtsv2 solves a tridiagonal system for multiple right-hand sides using pivoting
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* \f[
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* T*B = B
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* \f]
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* where \f$T\f$ is a sparse tridiagonal matrix and \f$B\f$ is a dense \f$ldb \times n\f$ matrix storing the
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* right-hand side vectors in column order. The tridiagonal matrix \f$T\f$ is defined by three vectors: \p dl
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* for the lower diagonal, \p d for the main diagonal, and \p du for the upper diagonal.
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*
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* Solving the tridiagonal system involves two steps. First, the user calls
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* \ref hipsparseSgtsv2_bufferSizeExt "hipsparseXgtsv2_bufferSizeExt()" to determine the size of the required
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* temporary storage buffer. After this is determined, the user allocates the buffer and passes it to
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* \ref hipsparseSgtsv2 "hipsparseXgtsv2()" to perform the actual solve. The \f$B\f$ dense matrix, which initially
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* stores the \p n right-hand side vectors, is overwritten with the \p n solution vectors after the call to
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* \ref hipsparseSgtsv2 "hipsparseXgtsv2()".
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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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* \note
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* This routine supports execution in a hipGraph context.
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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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* m size of the tridiagonal linear system (must be >= 2).
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* @param[in]
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* n number of columns in the dense matrix B.
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* @param[in]
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* dl lower diagonal of the tridiagonal system. The first entry must be zero.
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* @param[in]
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* d main diagonal of the tridiagonal system.
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* @param[in]
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* du upper diagonal of the tridiagonal system. The last entry must be zero.
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* @param[inout]
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* B Dense matrix of size ( \p ldb, \p n ).
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* @param[in]
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* ldb Leading dimension of B. Must satisfy \p ldb >= max(1, m).
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* @param[in]
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* pBuffer temporary storage buffer allocated by the user.
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*
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* \retval HIPSPARSE_STATUS_SUCCESS the operation completed successfully.
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* \retval HIPSPARSE_STATUS_INVALID_VALUE \p handle, \p m, \p n, \p ldb, \p dl, \p d,
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* \p du, \p B, or \p pBuffer pointer is invalid.
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* \retval HIPSPARSE_STATUS_INTERNAL_ERROR an internal error occurred.
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*/
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/**@{*/
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseSgtsv2(hipsparseHandle_t handle,
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int m,
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int n,
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const float* dl,
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const float* d,
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const float* du,
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float* B,
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int ldb,
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void* pBuffer);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseDgtsv2(hipsparseHandle_t handle,
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int m,
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int n,
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const double* dl,
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const double* d,
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const double* du,
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double* B,
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int ldb,
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void* pBuffer);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseCgtsv2(hipsparseHandle_t handle,
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int m,
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int n,
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const hipComplex* dl,
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const hipComplex* d,
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const hipComplex* du,
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hipComplex* B,
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int ldb,
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void* pBuffer);
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HIPSPARSE_EXPORT
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hipsparseStatus_t hipsparseZgtsv2(hipsparseHandle_t handle,
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int m,
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int n,
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const hipDoubleComplex* dl,
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const hipDoubleComplex* d,
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const hipDoubleComplex* du,
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hipDoubleComplex* B,
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int ldb,
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void* pBuffer);
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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_GTSV_H */
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