From 06324df07290692a2f2594df64f889b21e479fb1 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Thu, 13 Jun 2019 03:45:46 -0500
Subject: [PATCH] Apply some #ifndef

---
 Marlin/src/HAL/HAL_STM32/fastio_STM32.h | 2 +-
 Marlin/src/feature/mixing.h             | 2 +-
 Marlin/src/pins/stm32/pins_THE_BORG.h   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Marlin/src/HAL/HAL_STM32/fastio_STM32.h b/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
index e4bac7a06..29ddf5faa 100644
--- a/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
+++ b/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
@@ -45,7 +45,7 @@ void FastIO_init(); // Must be called before using fast io macros
 
 #define _BV32(b) (1UL << (b))
 
-#if !defined(PWM)
+#ifndef PWM
   #define PWM OUTPUT
 #endif
 
diff --git a/Marlin/src/feature/mixing.h b/Marlin/src/feature/mixing.h
index 9f8d4b143..55b54f96c 100644
--- a/Marlin/src/feature/mixing.h
+++ b/Marlin/src/feature/mixing.h
@@ -25,7 +25,7 @@
 
 //#define MIXER_NORMALIZER_DEBUG
 
-#if !defined(__AVR__) // || DUAL_MIXING_EXTRUDER
+#ifndef __AVR__ // || DUAL_MIXING_EXTRUDER
   // Use 16-bit (or fastest) data for the integer mix factors
   typedef uint_fast16_t mixer_comp_t;
   typedef uint_fast16_t mixer_accu_t;
diff --git a/Marlin/src/pins/stm32/pins_THE_BORG.h b/Marlin/src/pins/stm32/pins_THE_BORG.h
index 9b3e2e4b0..8069076e5 100644
--- a/Marlin/src/pins/stm32/pins_THE_BORG.h
+++ b/Marlin/src/pins/stm32/pins_THE_BORG.h
@@ -21,7 +21,7 @@
  */
 #pragma once
 
-#if !defined(STM32F7)
+#ifndef STM32F7
   #error "Oops! Select an STM32F7 board in 'Tools > Board.'"
 #elif HOTENDS > 3 || E_STEPPERS > 3
   #error "The-Borg supports up to 3 hotends / E-steppers."