[Springyuu]

Hi, everyone！I'm trying to write an udf to get the minimum temperature of cell, then get pressure and coordinates of that cell.
The udf I wrote can be load and built, but when execute on demand, an error message occurs，"Node 999999: Process 98196: Received signal SIGSEGV. The fl process could not be started.".
Can anyone give me some advice or help me fix the code? thanks~


#include "udf.h"

DEFINE_ON_DEMAND(on_demand_calc)
{
Domain *d;
real tmin = 0;
real temp, press, tmin_x,tmin_y;
Thread *t;
cell_t c;
cell_t tmin_cell;
Thread *tmin_t;

real xc[ND_ND];

d = Get_Domain(1);

thread_loop_c(t, d)
{
begin_c_loop(c, t)
{
temp = C_T(c, t);
if (temp < tmin || tmin == 0.0)
{
tmin = temp;
tmin_cell = c;
tmin_t = t;
}
}
end_c_loop(c, t)
}

C_CENTROID(xc,tmin_cell,tmin_t);
tmin_x = xc[0];
tmin_y = xc[1];
printf("\n Xtmin=%g Ymin=%g\n", tmin_x, tmin_y);

press = C_P(tmin_cell, tmin_t);

printf("\n Tmin=%g Press=%g\n",tmin, press);
}