void BKE_editmesh_loop_tangent_calc(BMEditMesh *em, bool calc_active_tangent, const char(*tangent_names)[MAX_NAME], int tangent_names_len, const float(*poly_normals)[3], const float(*loop_normals)[3], const float(*vert_orco)[3], CustomData *dm_loopdata_out, uint dm_loopdata_out_len, short *tangent_mask_curr_p)