using +511 have a 2-complement split.

gary7530 · gary7530 · commit a71152ae7766 · 2025-10-10T12:29:55.000+08:00
diff --git a/src/rtkcmn.c b/src/rtkcmn.c
@@ -2031,7 +2031,7 @@ extern int adjgpsweek(int week)
     int w;
     (void)time2gpst(utc2gpst(timeget()),&w);
     if (w<1560) w=1560; /* use 2009/12/1 if time is earlier than 2009/12/1 */
-    return week+(w-week+512)/1024*1024;
+    return week+(w-week+511)/1024*1024;
 }
 /* get tick time ---------------------------------------------------------------
 * get current tick in ms

Original file line number	Diff line number	Diff line change
`@@ -2031,7 +2031,7 @@ extern int adjgpsweek(int week)`
`2031`	`2031`	`int w;`
`2032`	`2032`	`(void)time2gpst(utc2gpst(timeget()),&w);`
`2033`	`2033`	`if (w<1560) w=1560; /* use 2009/12/1 if time is earlier than 2009/12/1 */`
`2034`		`- return week+(w-week+512)/1024*1024;`
	`2034`	`+ return week+(w-week+511)/1024*1024;`
`2035`	`2035`	`}`
`2036`	`2036`	`/* get tick time ---------------------------------------------------------------`
`2037`	`2037`	`* get current tick in ms`