1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
//------------------------------------------------------------------------------
// GB_mex_export_import: export and then reimport a matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2020, All Rights Reserved.
// http://suitesparse.com See GraphBLAS/Doc/License.txt for license.
//------------------------------------------------------------------------------
// format:
// 0: standard CSR
// 1: standard CSC
// 3: hyper CSR
// 4: hyper CSC
#include "GB_mex.h"
#define USAGE "C = GB_mex_export_import (A, format_matrix, format_export)"
#define FREE_WORK \
{ \
GB_FREE (Cp) ; \
GB_FREE (Ch) ; \
GB_FREE (Ci) ; \
GB_FREE (Cx) ; \
GB_MATRIX_FREE (&C) ; \
}
#define FREE_ALL \
{ \
FREE_WORK ; \
GB_MATRIX_FREE (&A) ; \
GB_mx_put_global (true, 0) ; \
}
#define OK(method) \
{ \
info = method ; \
if (info != GrB_SUCCESS) \
{ \
FREE_WORK ; \
return (info) ; \
} \
}
GrB_Matrix A = NULL ;
GrB_Matrix C = NULL ;
GrB_Index *Cp = NULL, *Ch = NULL, *Ci = NULL ;
GB_void *Cx = NULL ;
GB_Context Context = NULL ;
size_t csize = 0 ;
GrB_Index nvec = 0, nvals = 0, nrows = 0, ncols = 0 ;
int64_t nonempty = -1 ;
GrB_Type type = NULL, atype = NULL;
GrB_Info info = GrB_SUCCESS ;
GrB_Info export_import ( int format_matrix, int format_export) ;
//------------------------------------------------------------------------------
GrB_Info export_import
(
int format_matrix,
int format_export
)
{
GxB_Matrix_type (&atype, A) ;
GxB_Type_size (&csize, atype) ;
OK (GrB_Matrix_dup (&C, A)) ;
//--------------------------------------------------------------------------
// convert C to the requested format
//--------------------------------------------------------------------------
switch (format_matrix)
{
//----------------------------------------------------------------------
case 0 : // standard CSR
//----------------------------------------------------------------------
OK (GxB_Matrix_Option_set_(C, GxB_HYPER, GxB_NEVER_HYPER)) ;
OK (GxB_Matrix_Option_set_(C, GxB_FORMAT, GxB_BY_ROW)) ;
break ;
//----------------------------------------------------------------------
case 1 : // standard CSC
//----------------------------------------------------------------------
OK (GxB_Matrix_Option_set_(C, GxB_HYPER, GxB_NEVER_HYPER)) ;
OK (GxB_Matrix_Option_set_(C, GxB_FORMAT, GxB_BY_COL)) ;
break ;
//----------------------------------------------------------------------
case 2 : // hypersparse CSR
//----------------------------------------------------------------------
OK (GxB_Matrix_Option_set_(C, GxB_HYPER, GxB_ALWAYS_HYPER)) ;
OK (GxB_Matrix_Option_set_(C, GxB_FORMAT, GxB_BY_ROW)) ;
break ;
//----------------------------------------------------------------------
case 3 : // hypersparse CSC
//----------------------------------------------------------------------
OK (GxB_Matrix_Option_set_(C, GxB_HYPER, GxB_ALWAYS_HYPER)) ;
OK (GxB_Matrix_Option_set_(C, GxB_FORMAT, GxB_BY_COL)) ;
break ;
default : mexErrMsgTxt ("invalid format") ;
}
//--------------------------------------------------------------------------
// export then import
//--------------------------------------------------------------------------
switch (format_export)
{
//----------------------------------------------------------------------
case 0 : // standard CSR
//----------------------------------------------------------------------
OK (GxB_Matrix_export_CSR (&C, &type, &nrows, &ncols, &nvals,
&nonempty, &Cp, &Ci, &Cx, NULL)) ;
nvec = nrows ;
OK (GxB_Matrix_import_CSR (&C, type, nrows, ncols, nvals,
nonempty, &Cp, &Ci, &Cx, NULL)) ;
break ;
//----------------------------------------------------------------------
case 1 : // standard CSC
//----------------------------------------------------------------------
OK (GxB_Matrix_export_CSC (&C, &type, &nrows, &ncols, &nvals,
&nonempty, &Cp, &Ci, &Cx, NULL)) ;
nvec = ncols ;
OK (GxB_Matrix_import_CSC (&C, type, nrows, ncols, nvals,
nonempty, &Cp, &Ci, &Cx, NULL)) ;
break ;
//----------------------------------------------------------------------
case 2 : // hypersparse CSR
//----------------------------------------------------------------------
OK (GxB_Matrix_export_HyperCSR (&C, &type, &nrows, &ncols, &nvals,
&nonempty, &nvec, &Ch, &Cp, &Ci, &Cx, NULL)) ;
OK (GxB_Matrix_import_HyperCSR (&C, type, nrows, ncols, nvals,
nonempty, nvec, &Ch, &Cp, &Ci, &Cx, NULL)) ;
break ;
//----------------------------------------------------------------------
case 3 : // hypersparse CSC
//----------------------------------------------------------------------
OK (GxB_Matrix_export_HyperCSC (&C, &type, &nrows, &ncols, &nvals,
&nonempty, &nvec, &Ch, &Cp, &Ci, &Cx, NULL)) ;
OK (GxB_Matrix_import_HyperCSC (&C, type, nrows, ncols, nvals,
nonempty, nvec, &Ch, &Cp, &Ci, &Cx, NULL)) ;
break ;
default : mexErrMsgTxt ("invalid format") ;
}
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
bool malloc_debug = GB_mx_get_global (true) ;
// check inputs
GB_WHERE (USAGE) ;
if (nargout > 1 || nargin != 3)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
// get A (shallow copy)
{
A = GB_mx_mxArray_to_Matrix (pargin [0], "A input", false, true) ;
if (A == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("A failed") ;
}
}
// get matrix format (0 to 3)
int GET_SCALAR (1, int, format_matrix, 0) ;
// get export/import format (0 to 3)
int GET_SCALAR (2, int, format_export, 0) ;
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY ;
// convert matrix, export, then import
METHOD (export_import (format_matrix, format_export)) ;
// return C to MATLAB as a struct and free the GraphBLAS C
pargout [0] = GB_mx_Matrix_to_mxArray (&C, "C output", true) ;
FREE_ALL ;
}
|
