Simplified SET_BIT, moved to endstops.cpp

Marlin/src/core/macros.h

 #define TEST(n,b) !!((n)&_BV(b))
 #define SBI(n,b) (n |= _BV(b))
 #define CBI(n,b) (n &= ~_BV(b))
-#define SET_BIT(n,b,value) (n) ^= ((-value)^(n)) & (_BV(b))
 
 #define _BV32(b) (1UL << (b))
 #define TEST32(n,b) !!((n)&_BV32(b))

Marlin/src/module/endstops.cpp

   #define _ENDSTOP_INVERTING(AXIS, MINMAX) AXIS ##_## MINMAX ##_ENDSTOP_INVERTING
   #define _ENDSTOP_HIT(AXIS, MINMAX) SBI(endstop_hit_bits, _ENDSTOP(AXIS, MINMAX))
 
+  #define SET_BIT(N,B,TF) do{ if (TF) SBI(N,B); else CBI(N,B); }while(0)
   // UPDATE_ENDSTOP_BIT: set the current endstop bits for an endstop to its status
   #define UPDATE_ENDSTOP_BIT(AXIS, MINMAX) SET_BIT(current_endstop_bits, _ENDSTOP(AXIS, MINMAX), (READ(_ENDSTOP_PIN(AXIS, MINMAX)) != _ENDSTOP_INVERTING(AXIS, MINMAX)))
   // COPY_BIT: copy the value of SRC_BIT to DST_BIT in DST