extmod/utime_mphal: Fix comment re delta range check in time_ticks_add.

dpgeorge · dpgeorge · commit fe330c74f430 · 2023-02-15T14:16:31.000+11:00
Signed-off-by: Damien George &lt;damien@micropython.org&gt;
diff --git a/extmod/utime_mphal.c b/extmod/utime_mphal.c
@@ -103,7 +103,7 @@ STATIC mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {
     // The latter requires excluding delta=-TICKS_PERIOD/2.
     //
     // This unsigned comparison is equivalent to a signed comparison of:
-    //   delta <= TICKS_PERIOD/2 || delta >= TICKS_PERIOD/2
+    //   delta <= -TICKS_PERIOD/2 || delta >= TICKS_PERIOD/2
     if (delta + MICROPY_PY_UTIME_TICKS_PERIOD / 2 - 1 >= MICROPY_PY_UTIME_TICKS_PERIOD - 1) {
         mp_raise_msg(&mp_type_OverflowError, MP_ERROR_TEXT("ticks interval overflow"));
     }

Original file line number	Diff line number	Diff line change
`@@ -103,7 +103,7 @@ STATIC mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {`
`103`	`103`	`// The latter requires excluding delta=-TICKS_PERIOD/2.`
`104`	`104`	`//`
`105`	`105`	`// This unsigned comparison is equivalent to a signed comparison of:`
`106`		`- // delta <= TICKS_PERIOD/2 \|\| delta >= TICKS_PERIOD/2`
	`106`	`+ // delta <= -TICKS_PERIOD/2 \|\| delta >= TICKS_PERIOD/2`
`107`	`107`	`if (delta + MICROPY_PY_UTIME_TICKS_PERIOD / 2 - 1 >= MICROPY_PY_UTIME_TICKS_PERIOD - 1) {`
`108`	`108`	`mp_raise_msg(&mp_type_OverflowError, MP_ERROR_TEXT("ticks interval overflow"));`
`109`	`109`	`}`