MatrixOperations.hpp 14.3 KB
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//! \file 
//
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//
//  MatrixTOperations.hpp
//  HappyHeart
//
//  Created by Sebastien Gilles on 30/10/15.
//  Copyright © 2015 Inria. All rights reserved.
//

#ifndef HAPPY_HEART_x_THIRD_PARTY_x_WRAPPERS_x_PETSC_x_MATRIX_x_MATRIX_OPERATIONS_HPP_
# define HAPPY_HEART_x_THIRD_PARTY_x_WRAPPERS_x_PETSC_x_MATRIX_x_MATRIX_OPERATIONS_HPP_

# include <memory>
# include <vector>

# include "ThirdParty/IncludeWithoutWarning/Petsc/PetscSys.hpp"
# include "ThirdParty/IncludeWithoutWarning/Petsc/PetscMat.hpp"

# include "ThirdParty/Wrappers/Petsc/Vector/Vector.hpp"
# include "ThirdParty/Wrappers/Petsc/Matrix/Private/BaseMatrix.hpp"
# include "ThirdParty/Wrappers/Petsc/Exceptions/Petsc.hpp"


namespace HappyHeart
{
    
    
    namespace Wrappers
    {
        
        
        namespace Petsc
        {
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            /*!
             * \brief Wrapper over MatAXPY, that performs Y = a * X + Y.
             *
             * \param[in] structure either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN or SUBSET_NONZERO_PATTERN.
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
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            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
             && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
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            AXPY(PetscScalar a,
                 const MatrixT& X,
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                 MatrixU& Y,
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                 const char* invoking_file, int invoking_line,
                 const MatStructure& structure = SAME_NONZERO_PATTERN);
            
            
            /*!
             * \brief Wrapper over MatMult, that performs v2 = matrix * v1.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template<class MatrixT>
            std::enable_if_t<std::is_base_of<Private::BaseMatrix, MatrixT>::value, void>
            MatMult(const MatrixT& matrix, const Vector& v1, Vector& v2,
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                    const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMultAdd, that performs v3 = v2 + matrix * v1.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template<class MatrixT>
            std::enable_if_t<std::is_base_of<Private::BaseMatrix, MatrixT>::value, void>
            MatMultAdd(const MatrixT& matrix, const Vector& v1, const Vector& v2, Vector& v3,
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                       const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMultTranspose, that performs v2 = transpose(matrix) * v1.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template<class MatrixT>
            std::enable_if_t<std::is_base_of<Private::BaseMatrix, MatrixT>::value, void>
            MatMultTranspose(const MatrixT& matrix, const Vector& v1, Vector& v2,
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                             const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMultTransposeAdd, that performs v3 = v2 + transpose(matrix) * v1.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template<class MatrixT>
            std::enable_if_t<std::is_base_of<Private::BaseMatrix, MatrixT>::value, void>
            MatMultTransposeAdd(const MatrixT& matrix, const Vector& v1, const Vector& v2, Vector& v3,
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                                const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMatMult, that performs C = A * B.
             *
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             * If the operation is performed many times with each time the same non zero pattern for the matrices,
             * rather use MatMatMultSymbolic/MatMatMultNumeric to improve efficiency.
             *
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             * \todo #684 Investigate to use the argument fill, which provides an estimation of the non zero of the
             * resulting matrix. Currently PETSC_DEFAULT is used.
             * One can also reuse a pattern for several matrices, but so far I do not need that in HappyHeart so
             * I equally use the default setting.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
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            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
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            MatMatMult(const MatrixT& matrix1,
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                       const MatrixT& matrix2,
                       MatrixU& matrix3,
                       const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMatMultSymbolic, that computes the structure of C = A * B. 
             *
             * Actual computation is done with a call to MatMatMultNumeric, which might be called many times.
             *
             * \param[in] matrix1 A in C = A * B.
             * \param[in] matrix2 B in C = A * B.
             * \param[out] matrix3 C in C = A * B. Its pattern is correctly allocated after the call.
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
            MatMatMultSymbolic(const MatrixT& matrix1,
                               const MatrixT& matrix2,
                               MatrixU& matrix3,
                               const char* invoking_file, int invoking_line);
            
            
            /*!
             * \brief Wrapper over MatMatMultNumeric, that computes C = A * B in the case MatMatMultSymbolic
             * has been used to allocate structure of C.
             *
             * \param[in] matrix1 A in C = A * B.
             * \param[in] matrix2 B in C = A * B.
             * \param[out] matrix3 C in C = A * B.
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
            MatMatMultNumeric(const MatrixT& matrix1,
                              const MatrixT& matrix2,
                              MatrixU& matrix3,
                              const char* invoking_file, int invoking_line);
            
            
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            /*!
             * \brief Wrapper over MatMatMatMult, that performs D = A * B * C.
             *
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             * If the operation is performed many times with each time the same non zero pattern for the matrices,
             * rather use MatMatMatMultSymbolic/MatMatMatMultNumeric to improve efficiency.
             *
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             * \todo #684 Investigate to use the argument fill, which provides an estimation of the non zero of the
             * resulting matrix. Currently PETSC_DEFAULT is used.
             * One can also reuse a pattern for several matrices, but so far I do not need that in HappyHeart so
             * I equally use the default setting.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
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            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
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            MatMatMatMult(const MatrixT& matrix1,
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                          const MatrixT& matrix2,
                          const MatrixT& matrix3,
                          MatrixU& matrix4,
                          const char* invoking_file, int invoking_line);
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            /*!
             * \brief Wrapper over MatMatMultSymbolic, that performs D = A * B * C.
             *
             * Actual computation is done with a call to NatMatMatMultNumeric, which might be called many times.
             *
             * \param[in] matrix1 A in D = A * B * C.
             * \param[in] matrix2 B in D = A * B * C.
             * \param[in] matrix3 C in D = A * B * C.
             * \param[out] matrix4 D in D = A * B * C. Its pattern is correctly allocated after the call.

             * \todo #684 Investigate to use the argument fill, which provides an estimation of the non zero of the
             * resulting matrix. Currently PETSC_DEFAULT is used.
             * One can also reuse a pattern for several matrices, but so far I do not need that in HappyHeart so
             * I equally use the default setting.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
            MatMatMatMultSymbolic(const MatrixT& matrix1,
                                  const MatrixT& matrix2,
                                  const MatrixT& matrix3,
                                  MatrixU& matrix4,
                                  const char* invoking_file, int invoking_line);
            
            
            /*!
             * \brief Wrapper over MatMatMatMultNumeric, that performs D = A * B * C in the case MatMatMatMultSymbolic
             * has been used to allocate structure of D.
             *
             * \param[in] matrix1 A in D = A * B * C.
             * \param[in] matrix2 B in D = A * B * C.
             * \param[in] matrix3 C in D = A * B * C.
             * \param[out] matrix4 D in D = A * B * C.
             *
             * \todo #684 Investigate to use the argument fill, which provides an estimation of the non zero of the
             * resulting matrix. Currently PETSC_DEFAULT is used.
             * One can also reuse a pattern for several matrices, but so far I do not need that in HappyHeart so
             * I equally use the default setting.
             *
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template
            <
                class MatrixT,
                class MatrixU
            >
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value
                && std::is_base_of<Private::BaseMatrix, MatrixU>::value,
                void
            >
            MatMatMatMultNumeric(const MatrixT& matrix1,
                                 const MatrixT& matrix2,
                                 const MatrixT& matrix3,
                                 MatrixU& matrix4,
                                 const char* invoking_file, int invoking_line);
            
            
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            /*!
             * \brief Creates a new matrix object that behaves like A'.
             *
             * The transpose A' is NOT actually formed! Rather the new matrix object performs the matrix-vector product 
             * by using the MatMultTranspose() on the original matrix.
             *
             * \param[in] A matrix to transpose.
             * \param[out] transpose The matrix that figuratively represents A'. This matrix must not have been 
             * allocated!
             * \param[in] invoking_file File that invoked the function or class; usually __FILE__.
             * \param[in] invoking_line File that invoked the function or class; usually __LINE__.
             */
            template<class MatrixT>
            std::enable_if_t
            <
                std::is_base_of<Private::BaseMatrix, MatrixT>::value,
                void
            >
            MatCreateTranspose(const MatrixT& A,
                               MatrixT& transpose,
                               const char* invoking_file, int invoking_line);
            
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        } //namespace Petsc
        
        
    } //namespace Wrappers
    
    
} // namespace HappyHeart


# include "ThirdParty/Wrappers/Petsc/Matrix/MatrixOperations.hxx"


#endif // HAPPY_HEART_x_THIRD_PARTY_x_WRAPPERS_x_PETSC_x_MATRIX_x_MATRIX_OPERATIONS_HPP_