- remain_s = (int) remain % 60;
- remain_m = (int) (remain / 60.0) % 60;
- remain_h = (int) (remain / 3600.0);
+ if (remain < 0)
+ strlcpy(rembuf, " ??:??:??", sizeof rembuf);
+ else {
+ snprintf(rembuf, sizeof rembuf, "%4d:%02d:%02d",
+ (int) (remain / 3600.0),
+ (int) (remain / 60.0) % 60,
+ (int) remain % 60);
+ }