379     f32                     f1, vx,vy ;  in KPADCalibrateDPD()  local
389     vy = kp->hard_acc.y ;  in KPADCalibrateDPD()
390     f1 = sqrtf( vx * vx + vy * vy ) ;  in KPADCalibrateDPD()
393     kp->accXY_nrm_hori.y = vy / f1 ;  in KPADCalibrateDPD()
426     vy = kp->kobj_regular[KPAD_USE_OBJECTS-1].center.y - kp->kobj_regular[0].center.y ;  in KPADCalibrateDPD()
427     f1 = 1.0f / sqrtf( vx * vx + vy * vy ) ;        // Should not be zero  in KPADCalibrateDPD()
429     kp->sec_nrm_hori.y = vy * f1 ;  in KPADCalibrateDPD()
684     f32             f1, vx,vy, ax,ay ;  in calc_acc_horizon()  local
701     vy = kp->accXY_nrm_hori.y * ax - kp->accXY_nrm_hori.x * ay ;  in calc_acc_horizon()
705     ay = ( vy - kp->acc_horizon.y ) * f1 + kp->acc_horizon.y ;  in calc_acc_horizon()
719     vy = kp->acc_horizon.y - kp->ah_circle_pos.y ;  in calc_acc_horizon()
720     if ( vx*vx + vy*vy <= kp_ah_circle_radius2 ) {  in calc_acc_horizon()
983     f32             f1, vx,vy ;  in calc_horizon()  local
987     vy = p2->y - p1->y ;  in calc_horizon()
988     f1 = 1.0f / sqrtf( vx * vx + vy * vy ) ;        // Should not be zero  in calc_horizon()
990     vy *= f1 ;  in calc_horizon()
992     hori->x = kp->sec_nrm_hori.x * vx + kp->sec_nrm_hori.y * vy ;  in calc_horizon()
993     hori->y = kp->sec_nrm_hori.y * vx - kp->sec_nrm_hori.x * vy ;  in calc_horizon()
1057     f32             f1,f2, vx,vy, min = 2.0f ;  in select_2obj_continue()  local
1071             vy = op2->center.y - op1->center.y ;  in select_2obj_continue()
1072             f1 = 1.0f / sqrtf( vx*vx + vy*vy ) ;    // Should not be zero  in select_2obj_continue()
1074             nrm.y = vy * f1 ;  in select_2obj_continue()
1132     f32             vx,vy ;  in select_1obj_first()  local
1138     vy = kp->sec_nrm_hori.y * kp->acc_horizon.x - kp->sec_nrm_hori.x * kp->acc_horizon.y ;  in select_1obj_first()
1142     vy *= kp->trust_sec_length ;  in select_1obj_first()
1150         p1.y = op1->center.y - vy ;  in select_1obj_first()
1152         p2.y = op1->center.y + vy ;  in select_1obj_first()
1195     f32             f1, vx,vy ;  in select_1obj_continue()  local
1210             vy = op1->center.y - op2->center.y ;  in select_1obj_continue()
1211             f1 = vx * vx + vy * vy ;  in select_1obj_continue()
1231     vy = kp->sec_length * kp->sec_nrm.y ;  in select_1obj_continue()
1234         kp->kobj_regular[1].center.y = rp1->center.y + vy ;  in select_1obj_continue()
1239         kp->kobj_regular[0].center.y = rp1->center.y - vy ;  in select_1obj_continue()
1257     f32             f1, vx,vy ;  in calc_obj_horizon()  local
1261     vy = kp->kobj_regular[1].center.y - kp->kobj_regular[0].center.y ;  in calc_obj_horizon()
1262     kp->sec_length = sqrtf( vx * vx + vy * vy ) ;   // Should not be zero  in calc_obj_horizon()
1268     kp->sec_nrm.y = ( vy *= f1 ) ;  in calc_obj_horizon()
1270     kp->obj_horizon.x = kp->sec_nrm_hori.x * vx + kp->sec_nrm_hori.y * vy ;  in calc_obj_horizon()
1271     kp->obj_horizon.y = kp->sec_nrm_hori.y * vx - kp->sec_nrm_hori.x * vy ;  in calc_obj_horizon()