Test pipeline by adding comments on rabas()

src/include/sph_subs.h

@@ -511,6 +511,9 @@ void pwma(
 }
 
 /*! \brief C++ porting of RABAS
+ *
+ * This function computes radiation torque on the particle as a result
+ * of the difference between the extinction and the scattering contributions.
  *
  * \param inpol: `int`
  * \param li: `int`