[richardlicha]

I want to set different reflection coefficient in the wall(Cells zone, ID of wall is 2), corresponding to y coordinates. So I write a UDF to assign them in UDM, then UDS flux function can read them later. But there are always errors:
make[1]: stat: .c: Too many levels of symbolic links
cc -o .c
cc: no input files
make[1]: *** [.c] Error 1
make[1]: stat: .c: Too many levels of symbolic links
make[1]: Target `default' not remade because of errors.

Here is my UDF:
#include "udf.h"
#define intima_y 0.001852
#define iel_y 0.001862
#define media_y 0.001866
#define mywall 2
DEFINE_ON_DEMAND(cha_init)
{


Thread *cell_thread_wall;

Domain *d=Get_Domain(1);

cell_t c;
real xc[ND_ND];


Set_User_Memory_Name(5,"wall_lag");
cell_thread_wall=Lookup_Thread(d,mywall);

Message0("Starting designating the wall_UDM's\n");
begin_c_loop(c, cell_thread_wall) /* loops over cells in a cell thread */
{
C_CENTROID(xc,c,cell_thread_wall);
if(xc[1]>media_y){
C_UDMI(c,cell_thread_wall,5)=0.1486;
}

else if((xc[1]>=iel_y) && (xc[1]<=media_y)){
C_UDMI(c,cell_thread_wall,5)=1.73e-2;
}
else if((xc[1]>=intima_y) && (xc[1]<iel_y)){
C_UDMI(c,cell_thread_wall,5)=1.728e-1;
}
else
C_UDMI(c,cell_thread_wall,5)=0.1486;
}
end_c_loop(c, cell_thread_wall)

Message0("Done!!!\n");
}