[clang-tidy] use ceil

Found with bugprone-incorrect-roundings

Signed-off-by: Rosen Penev <rosenp@gmail.com>

diff --git a/sys-utils/hwclock.c b/sys-utils/hwclock.c
index 1026adc23fa8bafb289cd62ac371fe8858fce863..37abab42d605f489500ba144785261497c5406e6 100644 (file)
--- a/sys-utils/hwclock.c
+++ b/sys-utils/hwclock.c
@@ -608,9 +608,8 @@ set_hardware_clock_exact(const struct hwclock_control *ctl,
        }
 
        newhwtime = sethwtime
-                   + (int)(time_diff(nowsystime, refsystime)
-                           - delay /* don't count this */
-                           + 0.5 /* for rounding */);
+                   + ceil(time_diff(nowsystime, refsystime)
+                           - delay /* don't count this */);
        if (ctl->verbose)
                printf(_("%ld.%06ld is close enough to %ld.%06ld (%.6f < %.6f)\n"
                         "Set RTC to %ld (%ld + %d; refsystime = %ld.%06ld)\n"),