* nxml/rng-maint.el (rng-time-function): Rewrite using time-subtract.

This yields a more-accurate answer.
(rng-time-to-float): Remove; no longer needed.

2 files changed, 5 insertions, 7 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3751cea4287..6175def190f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,9 @@
 2011-07-01  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * nxml/rng-maint.el (rng-time-function): Rewrite using time-subtract.
+        This yields a more-accurate answer.
+        (rng-time-to-float): Remove; no longer needed.
+
         * emacs-lisp/timer.el (timer-relative-time): Use time-add.
 
         * calendar/timeclock.el (timeclock-seconds-to-time):
diff --git a/lisp/nxml/rng-maint.el b/lisp/nxml/rng-maint.el
index d31740f0ca2..bd5b3136d54 100644
--- a/lisp/nxml/rng-maint.el
+++ b/lisp/nxml/rng-maint.el
@@ -224,19 +224,13 @@
 
 ;;; Timing
 
-(defun rng-time-to-float (time)
-  (+ (* (nth 0 time) 65536.0)
-     (nth 1 time)
-     (/ (nth 2 time) 1000000.0)))
-
 (defun rng-time-function (function &rest args)
   (let* ((start (current-time))
          (val (apply function args))
          (end (current-time)))
     (message "%s ran in %g seconds"
              function
-             (- (rng-time-to-float end)
-                (rng-time-to-float start)))
+             (float-time (time-subtract end start)))
     val))
 
 (defun rng-time-tokenize-buffer ()