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#include "udf.h"
#define dp
real x[ND_ND];
real y;
cell_t c;
Thread *t;
C_CENTROID(x,c,t);
y=x[1];
if(y>0.06)
dp=0.06;
else
dp=0.03;
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moons2

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C_CENTROID(x,c,t);
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