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
|
//------------------------------------------------------------------------------
// GB_mex_subref_symbolic: S=A(I,J)
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#define USAGE "C = GB_mex_subref_symbolic (A, I, J)"
#define FREE_ALL \
{ \
GrB_Matrix_free_(&A) ; \
GrB_Matrix_free_(&C) ; \
GB_mx_put_global (true) ; \
}
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
struct GB_Matrix_opaque C_header ;
GrB_Matrix C = GB_clear_static_header (&C_header) ;
bool malloc_debug = GB_mx_get_global (true) ;
GrB_Matrix A = NULL ;
GrB_Index *I = NULL, ni = 0, I_range [3] ;
GrB_Index *J = NULL, nj = 0, J_range [3] ;
bool ignore ;
// check inputs
GB_CONTEXT (USAGE) ;
if (nargout > 1 || nargin != 3)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY ;
// get A (shallow copy)
A = GB_mx_mxArray_to_Matrix (pargin [0], "A", false, true) ;
if (A == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("A failed") ;
}
// get I
if (!GB_mx_mxArray_to_indices (&I, pargin [1], &ni, I_range, &ignore))
{
FREE_ALL ;
mexErrMsgTxt ("I failed") ;
}
// get J
if (!GB_mx_mxArray_to_indices (&J, pargin [2], &nj, J_range, &ignore))
{
FREE_ALL ;
mexErrMsgTxt ("J failed") ;
}
// symbolic subref is not needed when A is bitmap.
int sparsity = 0 ;
GxB_Matrix_Option_get_(A, GxB_SPARSITY_STATUS, &sparsity) ;
if (sparsity == GxB_BITMAP)
{
mexErrMsgTxt ("A failed: cannot be bitmap") ;
}
// C = A(I,J) or A(J,I)', no need to check dimensions of C; symbolic
METHOD (GB_subref (C, false, true, A, I, ni, J, nj, true, Context)) ;
// return C as a struct
pargout [0] = GB_mx_Matrix_to_mxArray (&C, "C subref symbolic", true) ;
FREE_ALL ;
}
|
