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/* $Id: SparseMatrix.c 1306 2007-09-18 05:51:09Z ksteube $ */ |
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/******************************************************* |
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* |
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* Copyright 2003-2007 by ACceSS MNRF |
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* Copyright 2007 by University of Queensland |
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* |
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* http://esscc.uq.edu.au |
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* Primary Business: Queensland, Australia |
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* Licensed under the Open Software License version 3.0 |
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* http://www.opensource.org/licenses/osl-3.0.php |
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* |
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*******************************************************/ |
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/**************************************************************/ |
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/* Paso: SparseMatrix */ |
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/**************************************************************/ |
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/* Author: gross@access.edu.au */ |
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/**************************************************************/ |
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#include "Paso.h" |
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#include "SparseMatrix.h" |
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#include "TRILINOS.h" |
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/**************************************************************/ |
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/* allocates a SparseMatrix of type type using the given matrix pattern |
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if type is UNKOWN CSR is used. |
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if CSC or CSC_BLK1 is used pattern has to give the CSC pattern. |
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if CSR or CSR_BLK1 is used pattern has to give the CSR pattern. |
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Values are initialized by zero. */ |
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Paso_SparseMatrix* Paso_SparseMatrix_alloc(Paso_SparseMatrixType type,Paso_Pattern *pattern, int row_block_size, int col_block_size) { |
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double time0; |
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Paso_SparseMatrix*out=NULL; |
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dim_t n_norm,i; |
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Paso_SparseMatrixType pattern_format_out; |
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Paso_resetError(); |
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time0=Paso_timer(); |
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out=MEMALLOC(1,Paso_SparseMatrix); |
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if (! Paso_checkPtr(out)) { |
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out->pattern=NULL; |
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out->val=NULL; |
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out->reference_counter=1; |
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out->type=type; |
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pattern_format_out= (type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT; |
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/* ====== compressed sparse columns === */ |
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if (type & MATRIX_FORMAT_CSC) { |
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if (type & MATRIX_FORMAT_SYM) { |
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Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSC is not implemented yet."); |
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return NULL; |
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} else { |
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if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) { |
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out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,col_block_size,row_block_size); |
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out->row_block_size=1; |
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out->col_block_size=1; |
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} else { |
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out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,1,1); |
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out->row_block_size=row_block_size; |
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out->col_block_size=col_block_size; |
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} |
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out->numRows = out->pattern->numInput; |
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out->numCols = out->pattern->numOutput; |
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} |
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} else { |
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/* ====== compressed sparse row === */ |
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if (type & MATRIX_FORMAT_SYM) { |
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Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSR is not implemented yet."); |
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return NULL; |
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} else { |
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if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) { |
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out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,row_block_size,col_block_size); |
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out->row_block_size=1; |
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out->col_block_size=1; |
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} else { |
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out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,1,1); |
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out->row_block_size=row_block_size; |
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out->col_block_size=col_block_size; |
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} |
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out->numRows = out->pattern->numOutput; |
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out->numCols = out->pattern->numInput; |
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} |
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} |
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out->block_size=out->row_block_size*out->col_block_size; |
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out->len=(size_t)(out->pattern->len)*(size_t)(out->block_size); |
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out->val=MEMALLOC(out->len,double); |
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if (! Paso_checkPtr(out->val)) Paso_SparseMatrix_setValues(out,DBLE(0)); |
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} |
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/* all done: */ |
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if (! Paso_noError()) { |
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Paso_SparseMatrix_free(out); |
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return NULL; |
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} else { |
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#ifdef Paso_TRACE |
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printf("timing: system matrix %.4e sec\n",Paso_timer()-time0); |
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printf("Paso_SparseMatrix_alloc: %ld x %ld system matrix has been allocated.\n",(long)out->numRows,(long)out->numCols); |
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#endif |
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return out; |
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} |
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} |
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/* returns a reference to Paso_SparseMatrix in */ |
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Paso_SparseMatrix* Paso_SparseMatrix_getReference(Paso_SparseMatrix* in) { |
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if (in!=NULL) ++(in->reference_counter); |
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return in; |
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} |
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/* deallocates a SparseMatrix: */ |
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void Paso_SparseMatrix_free(Paso_SparseMatrix* in) { |
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if (in!=NULL) { |
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in->reference_counter--; |
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if (in->reference_counter<=0) { |
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Paso_Pattern_free(in->pattern); |
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MEMFREE(in->val); |
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MEMFREE(in); |
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#ifdef Paso_TRACE |
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printf("Paso_SparseMatrix_free: system matrix as been deallocated.\n"); |
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#endif |
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} |
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} |
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} |
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