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

[collectd.git] / src / rrdtool.c

diff --git a/src/rrdtool.c b/src/rrdtool.c
index 80fc767..f19f269 100644 (file)
--- a/src/rrdtool.c
+++ b/src/rrdtool.c
@@ -26,20 +26,6 @@
 #include "utils_debug.h"
 
 /*
- * This weird macro cascade forces the glibc to define `NAN'. I don't know
- * another way to solve this, so more intelligent solutions are welcome. -octo
- */
-#ifndef __USE_ISOC99
-# define DISABLE__USE_ISOC99 1
-# define __USE_ISOC99 1
-#endif
-#include <math.h>
-#ifdef DISABLE__USE_ISOC99
-# undef DISABLE__USE_ISOC99
-# undef __USE_ISOC99
-#endif
-
-/*
  * Private types
  */
 struct rrd_cache_s
@@ -221,7 +207,7 @@ static int ds_get (char ***ret, const data_set_t *ds)
                        break;
                }
 
-               if (d->min == NAN)
+               if (isnan (d->min))
                {
                        strcpy (min, "U");
                }
@@ -231,7 +217,7 @@ static int ds_get (char ***ret, const data_set_t *ds)
                        min[sizeof (min) - 1] = '\0';
                }
 
-               if (d->max == NAN)
+               if (isnan (d->max))
                {
                        strcpy (max, "U");
                }