Shift m before compare to 0

6 years ago · 48d1bd29cb
1 changed files with 1 additions and 2 deletions
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@ -1191,9 +1191,8 @@ void Temperature::manage_heater() {
 #define SCAN_THERMISTOR_TABLE(TBL,LEN) do{                             \
  uint8_t l = 0, r = LEN, m;                                           \
  for (;;) {                                                           \
-    m = l + r;                                                         \
+    m = (l + r) >> 1;                                                  \
    if (!m) return short(pgm_read_word(&TBL[0][1]));                   \
-    m >>= 1;                                                           \
    if (m == l || m == r) return short(pgm_read_word(&TBL[LEN-1][1])); \
    short v00 = pgm_read_word(&TBL[m-1][0]),                           \
          v10 = pgm_read_word(&TBL[m-0][0]);                           \