Use right-shift instead of / 2, why not?

Marlin/temperature.cpp

 
     #if HAS_PID_FOR_BOTH
       if (hotend < 0)
-        soft_pwm_bed = bias = d = (MAX_BED_POWER) / 2;
+        soft_pwm_bed = bias = d = (MAX_BED_POWER) >> 1;
       else
-        soft_pwm[hotend] = bias = d = (PID_MAX) / 2;
+        soft_pwm[hotend] = bias = d = (PID_MAX) >> 1;
     #elif ENABLED(PIDTEMP)
-      soft_pwm[hotend] = bias = d = (PID_MAX) / 2;
+      soft_pwm[hotend] = bias = d = (PID_MAX) >> 1;
     #else
-      soft_pwm_bed = bias = d = (MAX_BED_POWER) / 2;
+      soft_pwm_bed = bias = d = (MAX_BED_POWER) >> 1;
     #endif
 
     wait_for_heatup = true;
       setPwmFrequency(FAN_PIN, 1); // No prescaling. Pwm frequency = F_CPU/256/8
     #endif
     #if ENABLED(FAN_SOFT_PWM)
-      soft_pwm_fan[0] = fanSpeedSoftPwm[0] / 2;
+      soft_pwm_fan[0] = fanSpeedSoftPwm[0] >> 1;
     #endif
   #endif
 
       setPwmFrequency(FAN1_PIN, 1); // No prescaling. Pwm frequency = F_CPU/256/8
     #endif
     #if ENABLED(FAN_SOFT_PWM)
-      soft_pwm_fan[1] = fanSpeedSoftPwm[1] / 2;
+      soft_pwm_fan[1] = fanSpeedSoftPwm[1] >> 1;
     #endif
   #endif
 
       setPwmFrequency(FAN2_PIN, 1); // No prescaling. Pwm frequency = F_CPU/256/8
     #endif
     #if ENABLED(FAN_SOFT_PWM)
-      soft_pwm_fan[2] = fanSpeedSoftPwm[2] / 2;
+      soft_pwm_fan[2] = fanSpeedSoftPwm[2] >> 1;
     #endif
   #endif
 
 
       #if ENABLED(FAN_SOFT_PWM)
         #if HAS_FAN0
-          soft_pwm_fan[0] = fanSpeedSoftPwm[0] / 2;
+          soft_pwm_fan[0] = fanSpeedSoftPwm[0] >> 1;
           WRITE_FAN(soft_pwm_fan[0] > 0 ? 1 : 0);
         #endif
         #if HAS_FAN1
-          soft_pwm_fan[1] = fanSpeedSoftPwm[1] / 2;
+          soft_pwm_fan[1] = fanSpeedSoftPwm[1] >> 1;
           WRITE_FAN1(soft_pwm_fan[1] > 0 ? 1 : 0);
         #endif
         #if HAS_FAN2
-          soft_pwm_fan[2] = fanSpeedSoftPwm[2] / 2;
+          soft_pwm_fan[2] = fanSpeedSoftPwm[2] >> 1;
           WRITE_FAN2(soft_pwm_fan[2] > 0 ? 1 : 0);
         #endif
       #endif
     #if ENABLED(FAN_SOFT_PWM)
       if (pwm_count == 0) {
         #if HAS_FAN0
-          soft_pwm_fan[0] = fanSpeedSoftPwm[0] / 2;
+          soft_pwm_fan[0] = fanSpeedSoftPwm[0] >> 1;
           WRITE_FAN(soft_pwm_fan[0] > 0 ? 1 : 0);
         #endif
         #if HAS_FAN1
-          soft_pwm_fan[1] = fanSpeedSoftPwm[1] / 2;
+          soft_pwm_fan[1] = fanSpeedSoftPwm[1] >> 1;
           WRITE_FAN1(soft_pwm_fan[1] > 0 ? 1 : 0);
         #endif
         #if HAS_FAN2
-          soft_pwm_fan[2] = fanSpeedSoftPwm[2] / 2;
+          soft_pwm_fan[2] = fanSpeedSoftPwm[2] >> 1;
           WRITE_FAN2(soft_pwm_fan[2] > 0 ? 1 : 0);
         #endif
       }