Hi,i wrote a UDF as follows # include"udf.h" # include"math.h" # define A -0.262 # define T 31.4 # define OM(2.0*PI/T) DEFINE_CG_MOTION(updown,dt,vel,omega,time,dtime) { vel[1] = A*OM*sin(OM*time + 0.105); }

but when i transfer it ,fluent says

angular.c ..\..\src\angular.c(5) : error C2010: '2' : unexpected in macro formal parameter list ..\..\src\angular.c(5) : error C2010: '.' : unexpected in macro formal parameter list ..\..\src\angular.c(5) : error C2010: '0' : unexpected in macro formal parameter list ..\..\src\angular.c(5) : error C2010: '*' : unexpected in macro formal parameter list ..\..\src\angular.c(5) : error C2010: '/' : unexpected in macro formal parameter list ..\..\src\angular.c(5) : error C2010: 'T' : unexpected in macro formal parameter list ..\..\src\angular.c(8) : error C2065: 'OM' : undeclared identifier

how can i solve it? Thank you