General cleanup

Marlin/src/lcd/menu/menu_motion.cpp

       ui.encoderPosition = 0;
     }
     if (ui.should_draw()) {
-      #if MULTI_MANUAL
-        MenuItemBase::init(eindex);
-      #endif
+      TERN_(MULTI_MANUAL, MenuItemBase::init(eindex));
       MenuEditItemBase::draw_edit_screen(
         GET_TEXT(TERN(MULTI_MANUAL, MSG_MOVE_EN, MSG_MOVE_E)),
         ftostr41sign(current_position.e

Marlin/src/module/stepper.cpp

 
 #if EITHER(Z_MULTI_ENDSTOPS, Z_STEPPER_AUTO_ALIGN)
   bool Stepper::locked_Z_motor = false, Stepper::locked_Z2_motor = false
-       #if NUM_Z_STEPPER_DRIVERS >= 3
-         , Stepper::locked_Z3_motor = false
-         #if NUM_Z_STEPPER_DRIVERS >= 4
-           , Stepper::locked_Z4_motor = false
-         #endif
-       #endif
-       ;
+    #if NUM_Z_STEPPER_DRIVERS >= 3
+      , Stepper::locked_Z3_motor = false
+      #if NUM_Z_STEPPER_DRIVERS >= 4
+        , Stepper::locked_Z4_motor = false
+      #endif
+    #endif
+  ;
 #endif
 
 uint32_t Stepper::acceleration_time, Stepper::deceleration_time;
 uint8_t Stepper::steps_per_isr;
 
-#if DISABLED(ADAPTIVE_STEP_SMOOTHING)
-  constexpr
-#endif
-    uint8_t Stepper::oversampling_factor;
+TERN(ADAPTIVE_STEP_SMOOTHING,,constexpr) uint8_t Stepper::oversampling_factor;
 
 xyze_long_t Stepper::delta_error{0};
 
       // No acceleration / deceleration time elapsed so far
       acceleration_time = deceleration_time = 0;
 
-      uint8_t oversampling = 0;                           // Assume no axis smoothing (via oversampling)
-
       #if ENABLED(ADAPTIVE_STEP_SMOOTHING)
+        uint8_t oversampling = 0;                           // Assume no axis smoothing (via oversampling)
         // Decide if axis smoothing is possible
-        uint32_t max_rate = current_block->nominal_rate;  // Get the maximum rate (maximum event speed)
+        uint32_t max_rate = current_block->nominal_rate;    // Get the maximum rate (maximum event speed)
         while (max_rate < MIN_STEP_ISR_FREQUENCY) {         // As long as more ISRs are possible...
           max_rate <<= 1;                                   // Try to double the rate
           if (max_rate >= MAX_STEP_ISR_FREQUENCY_1X) break; // Don't exceed the estimated ISR limit
           ++oversampling;                                   // Increase the oversampling (used for left-shift)
         }
         oversampling_factor = oversampling;                 // For all timer interval calculations
+      #else
+        constexpr uint8_t oversampling = 0;
       #endif
 
       // Based on the oversampling factor, do the calculations

Marlin/src/module/stepper.h

   #error "Expected at least one of MINIMUM_STEPPER_PULSE or MAXIMUM_STEPPER_RATE to be defined"
 #endif
 
-
 // But the user could be enforcing a minimum time, so the loop time is
 #define ISR_LOOP_CYCLES (ISR_LOOP_BASE_CYCLES + _MAX(MIN_STEPPER_PULSE_CYCLES, MIN_ISR_LOOP_CYCLES))
 
         // In case of high-performance processor, it is able to calculate in real-time
         timer = uint32_t(STEPPER_TIMER_RATE) / step_rate;
       #else
-        constexpr uint32_t min_step_rate = F_CPU / 500000U;
+        constexpr uint32_t min_step_rate = (F_CPU) / 500000U;
         NOLESS(step_rate, min_step_rate);
         step_rate -= min_step_rate; // Correct for minimal speed
         if (step_rate >= (8 * 256)) { // higher step rate

Marlin/src/module/temperature.cpp

           SERIAL_ECHOPAIR(STR_PID_DEBUG, ee, STR_PID_DEBUG_INPUT, temp_hotend[ee].celsius, STR_PID_DEBUG_OUTPUT, pid_output);
           #if DISABLED(PID_OPENLOOP)
           {
-            SERIAL_ECHOPAIR( STR_PID_DEBUG_PTERM, work_pid[ee].Kp, STR_PID_DEBUG_ITERM, work_pid[ee].Ki, STR_PID_DEBUG_DTERM, work_pid[ee].Kd
+            SERIAL_ECHOPAIR(
+              STR_PID_DEBUG_PTERM, work_pid[ee].Kp,
+              STR_PID_DEBUG_ITERM, work_pid[ee].Ki,
+              STR_PID_DEBUG_DTERM, work_pid[ee].Kd
               #if ENABLED(PID_EXTRUSION_SCALING)
                 , STR_PID_DEBUG_CTERM, work_pid[ee].Kc
               #endif