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
|
/* multiply_one_marginals.c */
/* the first operand can be a joint marginals of nodes set,*/
/* but the second operand nust be a single node's marginal.*/
/* and the result joint marginal has domain like [prhs[0].domain, prhs[2].domain]*/
/* i.e. cat the second domain at the end of the first domain*/
/* the third operands will be the eff_node_sizes */
#include "mex.h"
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
mxArray *ptemp, *ptemp1;
double *xdom, *ydom, *xp, *yp, *zp, *pr, *pSizes;
int N, xElements, numElements;
int i, j, nxdom, ndim, ydim;
int *xdim, *s, *sx, *sy, *cpsx, *cpsy;
int *subs, *s1, *cpsx2, *cpsy2;
int rdims[2];
const char *field_names[] = {"domain", "T", "mu", "Sigma"};
if (nrhs != 3)
mexErrMsgTxt("Incorrect number of inputs.");
if (nlhs > 1)
mexErrMsgTxt("Too many output arguments.");
if(mxIsEmpty(prhs[0])){
plhs[0] = mxDuplicateArray(prhs[1]);
return;
}
N = mxGetNumberOfElements(prhs[2]);
pSizes = mxGetPr(prhs[2]);
ptemp = mxGetField(prhs[0], 0, "domain");
nxdom = mxGetNumberOfElements(ptemp);
xdom = mxGetPr(ptemp);
ptemp = mxGetField(prhs[1], 0, "domain");
ydom = mxGetPr(ptemp);
ndim = nxdom + 1;
rdims[0] = 1;
rdims[1] = 1;
plhs[0] = mxCreateStructArray(2, rdims, 4, field_names);
ptemp = mxCreateDoubleMatrix(1, ndim, mxREAL);
mxSetField(plhs[0], 0, "domain", ptemp);
pr = mxGetPr(ptemp);
for(i=0; i<nxdom; i++){
pr[i] = xdom[i];
}
pr[ndim-1] = *ydom;
xdim = (int *)malloc(sizeof(int)*nxdom);
for(i=0; i<nxdom; i++){
xdim[i] = (int)pSizes[(int)xdom[i]-1];
}
ydim = (int)pSizes[(int)*ydom - 1];
ptemp = mxGetField(prhs[1], 0, "T");
yp = mxGetPr(ptemp);
ptemp = mxGetField(prhs[0], 0, "T");
xp = mxGetPr(ptemp);
xElements = mxGetNumberOfElements(ptemp);
if(ydim == 1){
ptemp1 = mxDuplicateArray(ptemp);
mxSetField(plhs[0], 0, "T", ptemp1);
free(xdim);
return;
}
numElements = xElements * ydim;
sx = (int *)malloc(sizeof(int)*ndim);
sy = (int *)malloc(sizeof(int)*ndim);
s = (int *)malloc(sizeof(int)*ndim);
s1 = (int *)malloc(sizeof(int)*ndim);
*(cpsx = (int *)malloc(sizeof(int)*ndim)) = 1;
*(cpsy = (int *)malloc(sizeof(int)*ndim)) = 1;
subs = (int *)malloc(sizeof(int)*ndim);
cpsx2 = (int *)malloc(sizeof(int)*ndim);
cpsy2 = (int *)malloc(sizeof(int)*ndim);
for(i=0; i<nxdom; i++){
subs[i] = 0;
sx[i] = xdim[i];
sy[i] = 1;
s[i] = sx[i];
s1[i] = s[i] - 1;
}
subs[ndim-1] = 0;
sx[ndim-1] = 1;
sy[ndim-1] = ydim;
s[ndim-1] = ydim;
s1[ndim-1] = s[ndim-1] - 1;
for(i=0; i<ndim-1; i++){
cpsx[i+1] = cpsx[i]*sx[i]--;
cpsy[i+1] = cpsy[i]*sy[i]--;
cpsx2[i] = cpsx[i]*sx[i];
cpsy2[i] = cpsy[i]*sy[i];
}
cpsx2[ndim-1] = cpsx[ndim-1]*(--sx[ndim-1]);
cpsy2[ndim-1] = cpsy[ndim-1]*(--sy[ndim-1]);
ptemp = mxCreateNumericArray(ndim, s, mxDOUBLE_CLASS, mxREAL);
mxSetField(plhs[0], 0, "T", ptemp);
zp = mxGetPr(ptemp);
for(j=0; j<numElements; j++){
*zp++ = *xp * *yp;
for(i=0; i<ndim; i++){
if(subs[i] == s1[i]){
subs[i] = 0;
if(sx[i])
xp -= cpsx2[i];
if(sy[i])
yp -= cpsy2[i];
}
else{
subs[i]++;
if(sx[i])
xp += cpsx[i];
if(sy[i])
yp += cpsy[i];
break;
}
}
}
free(xdim);
free(sx);
free(sy);
free(s);
free(s1);
free(cpsx);
free(cpsy);
free(subs);
free(cpsx2);
free(cpsy2);
}
|
