diff options
| -rw-r--r-- | lisp/timer.el | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lisp/timer.el b/lisp/timer.el index 3820b57365e..0c159c6023d 100644 --- a/lisp/timer.el +++ b/lisp/timer.el @@ -116,9 +116,11 @@ SECS may be a fraction." (setq low (+ low (floor secs))) ;; Normalize - (setq low (+ low (/ micro 1000000))) + ;; `/' rounds towards zero while `mod' returns a positive number, + ;; so we can't rely on (= a (+ (* 100 (/ a 100)) (mod a 100))). + (setq low (+ low (/ micro 1000000) (if (< micro 0) -1 0))) (setq micro (mod micro 1000000)) - (setq high (+ high (/ low 65536))) + (setq high (+ high (/ low 65536) (if (< low 0) -1 0))) (setq low (logand low 65535)) (list high low (and (/= micro 0) micro)))) |