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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
//------------------------------------------------------------------------------
// GrB_Matrix_export: export a matrix in CSR, CSC, FullC, FullR, or COO format
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Exports the contents of a matrix in one of 3 formats: CSR, CSC, or COO
// (triplet format). The exported matrix is not modified. No typecast is
// performed; the output array Ax must be of the same type as the input matrix
// A.
// The required sizes of the Ap, Ai, and Ax arrays are given by
// GrB_Matrix_exportSize.
// The GraphBLAS C API does not have a GrB* method to query the type of a
// GrB_Matrix or the size of a type. SuiteSparse:GraphBLAS provides
// GxB_Matrix_type_name to query the type of a matrix (returning a string),
// which can be converted into a GrB_Type with GxB_Type_from_name. The size of
// a type can be queried with GxB_Type_size. Using these methods, a user
// application can ensure that its Ax array has the correct size for any
// given GrB_Matrix it wishes to export, regardless of its type.
#define GB_FREE_ALL \
{ \
GB_Matrix_free (&T) ; \
}
#include "GB_transpose.h"
//------------------------------------------------------------------------------
// GB_export_worker: export a matrix of any type
//------------------------------------------------------------------------------
static GrB_Info GB_export_worker // export a matrix
(
GrB_Index *Ap, // pointers for CSR, CSC, row indices for COO
GrB_Index *Ai, // row indices for CSR, CSC, col indices for COO
void *Ax, // values (must match the type of A_input)
GrB_Index *Ap_len, // number of entries in Ap (not # of bytes)
GrB_Index *Ai_len, // number of entries in Ai (not # of bytes)
GrB_Index *Ax_len, // number of entries in Ax (not # of bytes)
GrB_Format format, // export format
GrB_Matrix A_input, // matrix to export
GB_Context Context
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
GrB_Info info ;
GrB_Matrix A = A_input ;
struct GB_Matrix_opaque T_header ;
GrB_Matrix T = NULL ;
switch (format)
{
case GrB_CSR_FORMAT :
case GrB_CSC_FORMAT :
case GrB_COO_FORMAT :
GB_RETURN_IF_NULL (Ap) ; GB_RETURN_IF_NULL (Ap_len) ;
GB_RETURN_IF_NULL (Ai) ; GB_RETURN_IF_NULL (Ai_len) ;
default:
GB_RETURN_IF_NULL (Ax) ; GB_RETURN_IF_NULL (Ax_len) ;
}
// finish any pending work
GB_MATRIX_WAIT (A) ;
//--------------------------------------------------------------------------
// determine current format of A and if a copy is needed
//--------------------------------------------------------------------------
int sparsity = GB_sparsity (A) ;
bool is_csc = A->is_csc ;
bool make_copy ;
bool csc_requested ;
switch (format)
{
case GrB_CSR_FORMAT :
make_copy = !(sparsity == GxB_SPARSE && !is_csc) ;
csc_requested = false ;
break ;
case GrB_CSC_FORMAT :
make_copy = !(sparsity == GxB_SPARSE && is_csc) ;
csc_requested = true ;
break ;
// case GrB_DENSE_ROW_FORMAT :
// if (!GB_is_dense (A))
// {
// // A must dense or full
// return (GrB_INVALID_VALUE) ;
// }
// make_copy = !(sparsity == GxB_FULL && !is_csc) ;
// csc_requested = false ;
// break ;
// case GrB_DENSE_COL_FORMAT :
// if (!GB_is_dense (A))
// {
// // A must dense or full
// return (GrB_INVALID_VALUE) ;
// }
// make_copy = !(sparsity == GxB_FULL && is_csc) ;
// csc_requested = true ;
// break ;
case GrB_COO_FORMAT :
// never make a copy to export in tuple format
make_copy = false ;
csc_requested = is_csc ;
break ;
default :
// unknown format
return (GrB_INVALID_VALUE) ;
}
//--------------------------------------------------------------------------
// create a copy if the matrix is not in the requested format
//--------------------------------------------------------------------------
if (make_copy)
{
GB_CLEAR_STATIC_HEADER (T, &T_header) ;
if (is_csc != csc_requested)
{
// T = A'
GB_OK (GB_transpose_cast (T, A->type, csc_requested, A, false,
Context)) ;
}
else
{
// T = A
GB_OK (GB_dup_worker (&T, A->iso, A, true, A->type, Context)) ;
}
switch (format)
{
case GrB_CSR_FORMAT :
case GrB_CSC_FORMAT :
GB_OK (GB_convert_any_to_sparse (T, Context)) ;
break ;
// case GrB_DENSE_ROW_FORMAT :
// case GrB_DENSE_COL_FORMAT :
// GB_convert_any_to_full (T) ;
// break ;
default :
break ;
}
A = T ;
}
//--------------------------------------------------------------------------
// export the contents of the matrix
//--------------------------------------------------------------------------
GB_GET_NTHREADS_MAX (nthreads_max, chunk, Context) ;
GrB_Index nvals = GB_nnz (A) ;
int64_t plen = A->vdim+1 ;
switch (format)
{
case GrB_CSR_FORMAT :
case GrB_CSC_FORMAT :
if (plen > (*Ap_len) || nvals > (*Ai_len))
{
GB_FREE_ALL ;
return (GrB_INSUFFICIENT_SPACE) ;
}
GB_memcpy (Ap, A->p, plen * sizeof (GrB_Index), nthreads_max) ;
GB_memcpy (Ai, A->i, nvals * sizeof (GrB_Index), nthreads_max) ;
(*Ap_len) = plen ;
(*Ai_len) = nvals ;
// case GrB_DENSE_ROW_FORMAT :
// case GrB_DENSE_COL_FORMAT :
if (nvals > (*Ax_len))
{
GB_FREE_ALL ;
return (GrB_INSUFFICIENT_SPACE) ;
}
(*Ax_len) = nvals ;
ASSERT (csc_requested == A->is_csc) ;
if (A->iso)
{
// expand the iso A->x into the non-iso array Ax
ASSERT (nvals > 0) ;
GB_iso_expand (Ax, nvals, A->x, A->type->size, Context) ;
}
else
{
GB_memcpy (Ax, A->x, nvals * A->type->size, nthreads_max) ;
}
break ;
default:
case GrB_COO_FORMAT :
if (nvals > (*Ap_len) || nvals > (*Ai_len) || nvals > (*Ax_len))
{
GB_FREE_ALL ;
return (GrB_INSUFFICIENT_SPACE) ;
}
GB_OK (GB_extractTuples (Ap, Ai, Ax, &nvals, A->type->code, A,
Context)) ;
(*Ap_len) = nvals ;
(*Ai_len) = nvals ;
(*Ax_len) = nvals ;
break ;
}
//--------------------------------------------------------------------------
// free workspace and return result
//--------------------------------------------------------------------------
GB_FREE_ALL ;
#pragma omp flush
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GrB_Matrix_export_*: export a matrix of a given type
//------------------------------------------------------------------------------
#undef GB_FREE_ALL
#define GB_FREE_ALL ;
#define GB_EXPORT(prefix,ctype,Type,acode) \
GrB_Info GB_EVAL3 (prefix, _Matrix_export_, Type) /* export a matrix */ \
( \
GrB_Index *Ap, /* pointers for CSR, CSC, row indices for COO */\
GrB_Index *Ai, /* row indices for CSR, CSC, col indices for COO */\
ctype *Ax, /* values (must match the type of A) */\
GrB_Index *Ap_len, /* number of entries in Ap (not # of bytes) */\
GrB_Index *Ai_len, /* number of entries in Ai (not # of bytes) */\
GrB_Index *Ax_len, /* number of entries in Ax (not # of bytes) */\
GrB_Format format, /* export format */\
GrB_Matrix A /* matrix to export */\
) \
{ \
GB_WHERE1 (GB_STR(prefix) "_Matrix_export_" GB_STR(Type) \
" (Ap, Ai, Ax, &Ap_len, &Ai_len, &Ax_len, format, A)") ; \
GB_BURBLE_START (GB_STR(prefix) "_Matrix_export_" GB_STR(Type)) ; \
GB_RETURN_IF_NULL_OR_FAULTY (A) ; \
if (A->type->code != acode) return (GrB_DOMAIN_MISMATCH) ; \
GrB_Info info = GB_export_worker (Ap, Ai, (void *) Ax, \
Ap_len, Ai_len, Ax_len, format, A, Context) ; \
GB_BURBLE_END ; \
return (info) ; \
}
GB_EXPORT (GrB, bool , BOOL , GB_BOOL_code )
GB_EXPORT (GrB, int8_t , INT8 , GB_INT8_code )
GB_EXPORT (GrB, int16_t , INT16 , GB_INT16_code )
GB_EXPORT (GrB, int32_t , INT32 , GB_INT32_code )
GB_EXPORT (GrB, int64_t , INT64 , GB_INT64_code )
GB_EXPORT (GrB, uint8_t , UINT8 , GB_UINT8_code )
GB_EXPORT (GrB, uint16_t , UINT16 , GB_UINT16_code)
GB_EXPORT (GrB, uint32_t , UINT32 , GB_UINT32_code)
GB_EXPORT (GrB, uint64_t , UINT64 , GB_UINT64_code)
GB_EXPORT (GrB, float , FP32 , GB_FP32_code )
GB_EXPORT (GrB, double , FP64 , GB_FP64_code )
GB_EXPORT (GxB, GxB_FC32_t, FC32 , GB_FC32_code )
GB_EXPORT (GxB, GxB_FC64_t, FC64 , GB_FC64_code )
GB_EXPORT (GrB, void , UDT , GB_UDT_code )
|
