Question about UDF

summer

Hello, everyone. Now I am writing a UDF to define the source term in UDS. I have the unsteady term defined as follows: DEFINE_UDS_UNSTEADY(uns_time,c,mix_thread,i,apu,su ) { cell_t c; Thread *mix_thread; real physical_dt; int i=0;

/*find the threads for the gas-bubble(secondary phase)*/ thread_g=THREAD_SUB_THREAD(mix_thread,s_col); /*secondary phase*/

void_g=C_VOF(c,thread_g); /*gas volume fraction*/

physical_dt=RP_Get_Real("physical-time-step");

*apu=-1/3*void_g/physical_dt; /*implicit part*/ phi_old=C_STORAGE_R(c,thread_g,SV_VOF_M1(i)); *su=1/3*phi_old/physical_dt; /*explicit part*/ } And then I want to use it in another macro called DEFINE_SOURCE in the same c file. Could I use apu and su directly? Need I use the User-defined Memory to store them first? Thanks in advance.