1 |
|
2 |
/* $Id: SparseMatrix.c 1306 2007-09-18 05:51:09Z ksteube $ */ |
3 |
|
4 |
/******************************************************* |
5 |
* |
6 |
* Copyright 2003-2007 by ACceSS MNRF |
7 |
* Copyright 2007 by University of Queensland |
8 |
* |
9 |
* http://esscc.uq.edu.au |
10 |
* Primary Business: Queensland, Australia |
11 |
* Licensed under the Open Software License version 3.0 |
12 |
* http://www.opensource.org/licenses/osl-3.0.php |
13 |
* |
14 |
*******************************************************/ |
15 |
|
16 |
/**************************************************************/ |
17 |
|
18 |
/* Paso: SparseMatrix */ |
19 |
|
20 |
/**************************************************************/ |
21 |
|
22 |
/* Author: gross@access.edu.au */ |
23 |
|
24 |
/**************************************************************/ |
25 |
|
26 |
#include "Paso.h" |
27 |
#include "SparseMatrix.h" |
28 |
#include "TRILINOS.h" |
29 |
|
30 |
/**************************************************************/ |
31 |
|
32 |
/* allocates a SparseMatrix of type type using the given matrix pattern |
33 |
if type is UNKOWN CSR is used. |
34 |
if CSC or CSC_BLK1 is used pattern has to give the CSC pattern. |
35 |
if CSR or CSR_BLK1 is used pattern has to give the CSR pattern. |
36 |
Values are initialized by zero. */ |
37 |
|
38 |
Paso_SparseMatrix* Paso_SparseMatrix_alloc(Paso_SparseMatrixType type,Paso_Pattern *pattern, int row_block_size, int col_block_size) { |
39 |
|
40 |
double time0; |
41 |
Paso_SparseMatrix*out=NULL; |
42 |
Paso_SparseMatrixType pattern_format_out; |
43 |
|
44 |
Paso_resetError(); |
45 |
time0=Paso_timer(); |
46 |
out=MEMALLOC(1,Paso_SparseMatrix); |
47 |
if (! Paso_checkPtr(out)) { |
48 |
out->pattern=NULL; |
49 |
out->val=NULL; |
50 |
out->reference_counter=1; |
51 |
out->type=type; |
52 |
|
53 |
pattern_format_out= (type & MATRIX_FORMAT_OFFSET1)? PATTERN_FORMAT_OFFSET1: PATTERN_FORMAT_DEFAULT; |
54 |
/* ====== compressed sparse columns === */ |
55 |
if (type & MATRIX_FORMAT_CSC) { |
56 |
if (type & MATRIX_FORMAT_SYM) { |
57 |
Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSC is not implemented yet."); |
58 |
return NULL; |
59 |
} else { |
60 |
if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) { |
61 |
out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,col_block_size,row_block_size); |
62 |
out->row_block_size=1; |
63 |
out->col_block_size=1; |
64 |
} else { |
65 |
out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,1,1); |
66 |
out->row_block_size=row_block_size; |
67 |
out->col_block_size=col_block_size; |
68 |
} |
69 |
out->numRows = out->pattern->numInput; |
70 |
out->numCols = out->pattern->numOutput; |
71 |
} |
72 |
} else { |
73 |
/* ====== compressed sparse row === */ |
74 |
if (type & MATRIX_FORMAT_SYM) { |
75 |
Paso_setError(TYPE_ERROR,"Generation of matrix pattern for symmetric CSR is not implemented yet."); |
76 |
return NULL; |
77 |
} else { |
78 |
if ((type & MATRIX_FORMAT_BLK1) || row_block_size!=col_block_size || col_block_size>3) { |
79 |
out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,row_block_size,col_block_size); |
80 |
out->row_block_size=1; |
81 |
out->col_block_size=1; |
82 |
} else { |
83 |
out->pattern=Paso_Pattern_unrollBlocks(pattern,pattern_format_out,1,1); |
84 |
out->row_block_size=row_block_size; |
85 |
out->col_block_size=col_block_size; |
86 |
} |
87 |
out->numRows = out->pattern->numOutput; |
88 |
out->numCols = out->pattern->numInput; |
89 |
} |
90 |
} |
91 |
out->block_size=out->row_block_size*out->col_block_size; |
92 |
out->len=(size_t)(out->pattern->len)*(size_t)(out->block_size); |
93 |
|
94 |
out->val=MEMALLOC(out->len,double); |
95 |
if (! Paso_checkPtr(out->val)) Paso_SparseMatrix_setValues(out,DBLE(0)); |
96 |
} |
97 |
/* all done: */ |
98 |
if (! Paso_noError()) { |
99 |
Paso_SparseMatrix_free(out); |
100 |
return NULL; |
101 |
} else { |
102 |
#ifdef Paso_TRACE |
103 |
printf("timing: system matrix %.4e sec\n",Paso_timer()-time0); |
104 |
printf("Paso_SparseMatrix_alloc: %ld x %ld system matrix has been allocated.\n",(long)out->numRows,(long)out->numCols); |
105 |
#endif |
106 |
return out; |
107 |
} |
108 |
} |
109 |
|
110 |
/* returns a reference to Paso_SparseMatrix in */ |
111 |
|
112 |
Paso_SparseMatrix* Paso_SparseMatrix_getReference(Paso_SparseMatrix* in) { |
113 |
if (in!=NULL) ++(in->reference_counter); |
114 |
return in; |
115 |
} |
116 |
|
117 |
/* deallocates a SparseMatrix: */ |
118 |
|
119 |
void Paso_SparseMatrix_free(Paso_SparseMatrix* in) { |
120 |
if (in!=NULL) { |
121 |
in->reference_counter--; |
122 |
if (in->reference_counter<=0) { |
123 |
Paso_Pattern_free(in->pattern); |
124 |
MEMFREE(in->val); |
125 |
MEMFREE(in); |
126 |
#ifdef Paso_TRACE |
127 |
printf("Paso_SparseMatrix_free: system matrix as been deallocated.\n"); |
128 |
#endif |
129 |
} |
130 |
} |
131 |
} |