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-rw-r--r--sys-utils/hwclock.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/sys-utils/hwclock.c b/sys-utils/hwclock.c
index 493ee8808..e7801583b 100644
--- a/sys-utils/hwclock.c
+++ b/sys-utils/hwclock.c
@@ -60,6 +60,7 @@
#include <errno.h>
#include <getopt.h>
#include <limits.h>
+#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@@ -1042,7 +1043,7 @@ adjust_drift_factor(struct adjtime *adjtime_p,
/* New drift factor */
drift_factor = adjtime_p->drift_factor + factor_adjust;
- if (abs(drift_factor) > MAX_DRIFT) {
+ if (fabs(drift_factor) > MAX_DRIFT) {
if (debug)
printf(_("Clock drift factor was calculated as "
"%f seconds/day.\n"
@@ -1215,7 +1216,7 @@ do_adjustment(struct adjtime *adjtime_p,
if (debug)
printf(_("Not setting clock because last adjustment time is zero, "
"so history is bad.\n"));
- } else if (abs(adjtime_p->drift_factor) > MAX_DRIFT) {
+ } else if (fabs(adjtime_p->drift_factor) > MAX_DRIFT) {
if (debug)
printf(_("Not setting clock because drift factor %f is far too high.\n"),
adjtime_p->drift_factor);