make negative update times work as diescribed in the documentation (-5 is NOW-5seconds)

[rrdtool.git] / src / rrd_update.c

diff --git a/src/rrd_update.c b/src/rrd_update.c
index 11a00bb..0c34743 100644 (file)
--- a/src/rrd_update.c
+++ b/src/rrd_update.c
@@ -972,6 +972,11 @@ static int get_time_from_reading(
             return -1;
         };
         setlocale(LC_NUMERIC, old_locale);
+        if (tmp < 0.0){
+            gettimeofday(&tmp_time, 0);
+            tmp = (double)tmp_time.tv_sec + (double)tmp_time.tv_usec * 1e-6f + tmp;
+        }
+
         *current_time = floor(tmp);
         *current_time_usec = (long) ((tmp - (double) *current_time) * 1e6f);
     }