[16222] | 1 | /* |
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| 2 | * ----------------------------------------------------------------- |
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| 3 | * Programmer(s): Daniel Reynolds @ SMU |
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| 4 | * David Gardner @ LLNL |
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| 5 | * Based on code sundials_direct.h by: Radu Serban @ LLNL |
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| 6 | * ----------------------------------------------------------------- |
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| 7 | * LLNS/SMU Copyright Start |
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| 8 | * Copyright (c) 2017, Southern Methodist University and |
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| 9 | * Lawrence Livermore National Security |
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| 10 | * |
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| 11 | * This work was performed under the auspices of the U.S. Department |
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| 12 | * of Energy by Southern Methodist University and Lawrence Livermore |
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| 13 | * National Laboratory under Contract DE-AC52-07NA27344. |
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| 14 | * Produced at Southern Methodist University and the Lawrence |
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| 15 | * Livermore National Laboratory. |
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| 16 | * |
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| 17 | * All rights reserved. |
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| 18 | * For details, see the LICENSE file. |
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| 19 | * LLNS/SMU Copyright End |
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| 20 | * ----------------------------------------------------------------- |
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| 21 | * This is the header file for the dense implementation of the |
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| 22 | * SUNMATRIX module. |
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| 23 | * |
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| 24 | * Part I contains declarations specific to the dense implementation |
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| 25 | * of the supplied SUNMATRIX module. |
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| 26 | * |
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| 27 | * Part II defines accessor macros that allow the user to |
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| 28 | * efficiently use this SUNMatrix type without making explicit |
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| 29 | * references to the underlying data structure. |
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| 30 | * |
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| 31 | * Part III contains the prototype for the constructor |
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| 32 | * SUNDenseMatrix as well as implementation-specific prototypes |
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| 33 | * for various useful matrix operations. |
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| 34 | * |
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| 35 | * Notes: |
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| 36 | * |
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| 37 | * - The definition of the generic SUNMatrix structure can be found |
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| 38 | * in the header file sundials_matrix.h. |
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| 39 | * |
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| 40 | * - The definition of the type 'realtype' can be found in the |
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| 41 | * header file sundials_types.h, and it may be changed (at the |
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| 42 | * configuration stage) according to the user's needs. |
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| 43 | * The sundials_types.h file also contains the definition |
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| 44 | * for the type 'booleantype' and 'indextype'. |
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| 45 | * |
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| 46 | * ----------------------------------------------------------------- |
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| 47 | */ |
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| 48 | |
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| 49 | #ifndef _SUNMATRIX_DENSE_H |
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| 50 | #define _SUNMATRIX_DENSE_H |
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| 51 | |
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| 52 | #include <stdio.h> |
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| 53 | #include <sundials/sundials_matrix.h> |
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| 54 | |
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| 55 | #ifdef __cplusplus /* wrapper to enable C++ usage */ |
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| 56 | extern "C" { |
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| 57 | #endif |
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| 58 | |
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| 59 | /* |
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| 60 | * ----------------------------------------------------------------- |
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| 61 | * PART I: Dense implementation of SUNMatrix |
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| 62 | * |
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| 63 | * The dense implementation of the SUNMatrix 'content' structure |
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| 64 | * contains: |
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| 65 | * M - number of rows |
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| 66 | * N - number of columns |
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| 67 | * data - pointer to a contiguous block of realtype variables |
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| 68 | * ldata - length of the data array = M*N |
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| 69 | * cols - array of pointers. cols[j] points to the first element |
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| 70 | * of the j-th column of the matrix in the array data. |
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| 71 | * The elements of a dense matrix are stored columnwise (i.e. columns |
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| 72 | * are stored one on top of the other in memory); i.e. if A is a |
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| 73 | * SUNMatrix_Dense object, then the (i,j)th element of A (with |
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| 74 | * 0 <= i < M and 0 <= j < N) is given by (A->data)[j*M+i]. |
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| 75 | * |
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| 76 | * ----------------------------------------------------------------- |
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| 77 | */ |
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| 78 | |
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| 79 | struct _SUNMatrixContent_Dense { |
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| 80 | sunindextype M; |
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| 81 | sunindextype N; |
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| 82 | realtype *data; |
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| 83 | sunindextype ldata; |
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| 84 | realtype **cols; |
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| 85 | }; |
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| 86 | |
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| 87 | typedef struct _SUNMatrixContent_Dense *SUNMatrixContent_Dense; |
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| 88 | |
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| 89 | /* |
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| 90 | * ----------------------------------------------------------------- |
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| 91 | * PART II: macros SM_CONTENT_D, SM_DATA_D, SM_ROWS_D, SM_COLUMNS_D, |
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| 92 | * SM_COLUMN_D, and SM_ELEMENT_D |
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| 93 | * ----------------------------------------------------------------- |
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| 94 | * In the descriptions below, the following user declarations |
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| 95 | * are assumed: |
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| 96 | * |
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| 97 | * SUNMatrix A; |
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| 98 | * SUNMatrixContent_Dense A_cont; |
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| 99 | * realtype *A_col_j, *A_data, **A_cols, A_ij; |
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| 100 | * sunindextype i, j, A_rows, A_columns, A_ldata; |
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| 101 | * |
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| 102 | * (1) SM_CONTENT_D |
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| 103 | * |
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| 104 | * This macro gives access to the contents of the dense |
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| 105 | * SUNMatrix |
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| 106 | * |
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| 107 | * The assignment A_cont = SM_CONTENT_D(A) sets A_cont to be |
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| 108 | * a pointer to the dense SUNMatrix content structure. |
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| 109 | * |
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| 110 | * (2) SM_DATA_D, SM_COLS_D, SM_LDATA_D, SM_ROWS_D, SM_COLUMNS_D |
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| 111 | * |
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| 112 | * These macros give access to the individual parts of |
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| 113 | * the content structure of a dense SUNMatrix. |
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| 114 | * |
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| 115 | * The assignment A_data = SM_DATA_D(A) sets A_data to be |
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| 116 | * a pointer to the first component of A. |
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| 117 | * |
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| 118 | * The assignment A_cols = SM_COLS_D(A) sets A_cols to be |
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| 119 | * a pointer to the content's 'cols' entry. |
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| 120 | * |
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| 121 | * The assignment A_ldata = SM_LDATA_D(A) sets A_ldata to be |
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| 122 | * the length of the data array for A. |
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| 123 | * |
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| 124 | * The assignment A_rows = SM_ROWS_D(A) sets A_rows to be |
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| 125 | * the number of rows in A. |
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| 126 | * |
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| 127 | * The assignment A_columns = SM_COLUMNS_D(A) sets A_columns |
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| 128 | * to be the number of columns in A. |
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| 129 | * |
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| 130 | * (3) SM_COLUMN_D and SM_ELEMENT_D |
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| 131 | * |
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| 132 | * These macros give access to the individual columns and |
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| 133 | * elements of a dense SUNMatrix, respectively. In the |
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| 134 | * following, the entries of a SUNMatrix are indexed (i,j) |
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| 135 | * where i=0,...,M-1 and j=0,...,N-1. |
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| 136 | * |
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| 137 | * The assignment A_col_j = SM_COLUMN_D(A,j) sets A_col_j to |
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| 138 | * be a pointer to the jth column of the M-by-N dense |
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| 139 | * matrix A, 0 <= j < N. After the assignment, A_col_j may |
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| 140 | * be treated as an array indexed from 0 to M-1. |
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| 141 | * The (i,j)-th element of A is thus referenced by col_j[i]. |
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| 142 | * |
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| 143 | * The assignment A_ij = SM_ELEMENT_D(A,i,j) sets A_ij to |
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| 144 | * the value of the (i,j)th element of the dense M-by-N matrix |
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| 145 | * A, 0 <= i < M ; 0 <= j < N. Similarly, the assignment |
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| 146 | * SM_ELEMENT_D(A,i,j) = A_ij sets the value of A_ij into the |
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| 147 | * (i,j) location of the matrix A. |
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| 148 | * |
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| 149 | * ----------------------------------------------------------------- |
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| 150 | */ |
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| 151 | |
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| 152 | #define SM_CONTENT_D(A) ( (SUNMatrixContent_Dense)(A->content) ) |
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| 153 | |
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| 154 | #define SM_ROWS_D(A) ( SM_CONTENT_D(A)->M ) |
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| 155 | |
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| 156 | #define SM_COLUMNS_D(A) ( SM_CONTENT_D(A)->N ) |
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| 157 | |
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| 158 | #define SM_LDATA_D(A) ( SM_CONTENT_D(A)->ldata ) |
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| 159 | |
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| 160 | #define SM_DATA_D(A) ( SM_CONTENT_D(A)->data ) |
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| 161 | |
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| 162 | #define SM_COLS_D(A) ( SM_CONTENT_D(A)->cols ) |
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| 163 | |
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| 164 | #define SM_COLUMN_D(A,j) ( (SM_CONTENT_D(A)->cols)[j] ) |
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| 165 | |
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| 166 | #define SM_ELEMENT_D(A,i,j) ( (SM_CONTENT_D(A)->cols)[j][i] ) |
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| 167 | |
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| 168 | /* |
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| 169 | * ----------------------------------------------------------------- |
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| 170 | * PART III: functions exported by sunmatrix_dense |
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| 171 | * |
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| 172 | * CONSTRUCTORS: |
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| 173 | * SUNDenseMatrix |
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| 174 | * OTHER: |
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| 175 | * SUNDenseMatrix_Print |
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| 176 | * SUNDenseMatrix_Rows |
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| 177 | * SUNDenseMatrix_Columns |
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| 178 | * SUNDenseMatrix_LData |
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| 179 | * SUNDenseMatrix_Data |
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| 180 | * SUNDenseMatrix_Cols |
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| 181 | * SUNDenseMatrix_Column |
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| 182 | * ----------------------------------------------------------------- |
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| 183 | */ |
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| 184 | |
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| 185 | /* |
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| 186 | * ----------------------------------------------------------------- |
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| 187 | * Function: SUNDenseMatrix |
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| 188 | * ----------------------------------------------------------------- |
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| 189 | * Creates and allocates memory for an M-by-N dense SUNMatrix. |
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| 190 | * ----------------------------------------------------------------- |
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| 191 | */ |
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| 192 | |
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| 193 | SUNDIALS_EXPORT SUNMatrix SUNDenseMatrix(sunindextype M, sunindextype N); |
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| 194 | |
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| 195 | /* |
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| 196 | * ----------------------------------------------------------------- |
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| 197 | * Functions: SUNDenseMatrix_Print |
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| 198 | * ----------------------------------------------------------------- |
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| 199 | * This function prints the content of a M-by-N dense matrix A to |
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| 200 | * file pointer as it would normally appear on paper. |
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| 201 | * It is intended as debugging tools with small values of M and N. |
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| 202 | * The elements are printed using the %g/%lg/%Lg option. |
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| 203 | * A blank line is printed before and after the matrix. |
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| 204 | * ----------------------------------------------------------------- |
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| 205 | */ |
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| 206 | |
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| 207 | SUNDIALS_EXPORT void SUNDenseMatrix_Print(SUNMatrix A, FILE* outfile); |
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| 208 | |
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| 209 | |
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| 210 | /* |
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| 211 | * ----------------------------------------------------------------- |
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| 212 | * Accessor Functions: |
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| 213 | * |
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| 214 | * SUNDenseMatrix_Rows |
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| 215 | * Returns the number of rows in the dense matrix |
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| 216 | * |
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| 217 | * SUNDenseMatrix_Columns |
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| 218 | * Returns the number of columns in the dense matrix |
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| 219 | * |
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| 220 | * SUNDenseMatrix_LData |
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| 221 | * Returns the total allocated data length for the dense matrix |
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| 222 | * |
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| 223 | * SUNDenseMatrix_Data |
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| 224 | * Returns a pointer to the data array for the dense matrix |
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| 225 | * |
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| 226 | * SUNDenseMatrix_Cols |
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| 227 | * Returns a pointer to the cols array for the dense matrix |
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| 228 | * |
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| 229 | * SUNDenseMatrix_Column |
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| 230 | * Returns a pointer to the jth column of the dense matrix |
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| 231 | * |
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| 232 | * ----------------------------------------------------------------- |
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| 233 | */ |
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| 234 | |
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| 235 | SUNDIALS_EXPORT sunindextype SUNDenseMatrix_Rows(SUNMatrix A); |
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| 236 | SUNDIALS_EXPORT sunindextype SUNDenseMatrix_Columns(SUNMatrix A); |
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| 237 | SUNDIALS_EXPORT sunindextype SUNDenseMatrix_LData(SUNMatrix A); |
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| 238 | SUNDIALS_EXPORT realtype* SUNDenseMatrix_Data(SUNMatrix A); |
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| 239 | SUNDIALS_EXPORT realtype** SUNDenseMatrix_Cols(SUNMatrix A); |
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| 240 | SUNDIALS_EXPORT realtype* SUNDenseMatrix_Column(SUNMatrix A, sunindextype j); |
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| 241 | |
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| 242 | /* |
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| 243 | * ----------------------------------------------------------------- |
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| 244 | * dense implementations of various useful matrix operations |
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| 245 | * ----------------------------------------------------------------- |
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| 246 | */ |
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| 247 | |
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| 248 | SUNDIALS_EXPORT SUNMatrix_ID SUNMatGetID_Dense(SUNMatrix A); |
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| 249 | SUNDIALS_EXPORT SUNMatrix SUNMatClone_Dense(SUNMatrix A); |
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| 250 | SUNDIALS_EXPORT void SUNMatDestroy_Dense(SUNMatrix A); |
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| 251 | SUNDIALS_EXPORT int SUNMatZero_Dense(SUNMatrix A); |
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| 252 | SUNDIALS_EXPORT int SUNMatCopy_Dense(SUNMatrix A, SUNMatrix B); |
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| 253 | SUNDIALS_EXPORT int SUNMatScaleAdd_Dense(realtype c, SUNMatrix A, SUNMatrix B); |
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| 254 | SUNDIALS_EXPORT int SUNMatScaleAddI_Dense(realtype c, SUNMatrix A); |
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| 255 | SUNDIALS_EXPORT int SUNMatMatvec_Dense(SUNMatrix A, N_Vector x, N_Vector y); |
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| 256 | SUNDIALS_EXPORT int SUNMatSpace_Dense(SUNMatrix A, long int *lenrw, |
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| 257 | long int *leniw); |
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| 258 | |
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| 259 | |
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| 260 | #ifdef __cplusplus |
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| 261 | } |
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| 262 | #endif |
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| 263 | |
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| 264 | #endif |
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