collectd-nagios, rrdtool plugin, unixsock plugin: Use `isnan' rather than `==' or...

[collectd.git] / src / unixsock.c

diff --git a/src/unixsock.c b/src/unixsock.c
index b4af8b386a67e8b48e23f0bba02cef1d2275d7b7..0008b2242ccfa68862a58084d973c78bc43d1f03 100644 (file)
--- a/src/unixsock.c
+++ b/src/unixsock.c
@@ -277,9 +277,9 @@ static int cache_update (const data_set_t *ds, const value_list_t *vl)
                        vc->counter[i] = 0;
                }
 
-               if ((vc->gauge[i] == NAN)
-                               || ((ds->ds[i].min != NAN) && (vc->gauge[i] < ds->ds[i].min))
-                               || ((ds->ds[i].max != NAN) && (vc->gauge[i] > ds->ds[i].max)))
+               if (isnan (vc->gauge[i])
+                               || (!isnan (ds->ds[i].min) && (vc->gauge[i] < ds->ds[i].min))
+                               || (!isnan (ds->ds[i].max) && (vc->gauge[i] > ds->ds[i].max)))
                        vc->gauge[i] = NAN;
        } /* for i = 0 .. ds->ds_num */
 
@@ -483,7 +483,7 @@ static int us_handle_getval (FILE *fh, char **fields, int fields_num)
                for (i = 0; i < vc->values_num; i++)
                {
                        fprintf (fh, " %s=", vc->ds->ds[i].name);
-                       if (vc->gauge[i] == NAN)
+                       if (isnan (vc->gauge[i]))
                                fprintf (fh, "NaN");
                        else
                                fprintf (fh, "%12e", vc->gauge[i]);