src/collectd.h: Add fallback implementations of "isfinite" and "isinf".

diff --git a/src/collectd.h b/src/collectd.h
index 3d8998fddbeab2f14f21cc0c6e98aef9bb4ad036..957654bc0abcc446fd03c94fdc06b69de27878af 100644 (file)
--- a/src/collectd.h
+++ b/src/collectd.h
@@ -135,6 +135,12 @@ typedef bool _Bool;
 # ifndef isnan
 #  define isnan(f) ((f) != (f))
 # endif /* !defined(isnan) */
+# ifndef isfinite
+#  define isfinite(f) (((f) - (f)) == 0.0)
+# endif
+# ifndef isinf
+#  define isinf(f) (!isfinite(f) && !isnan(f))
+# endif
 #endif /* NAN_ZERO_ZERO */
 
 /* Try really, really hard to determine endianess. Under NexentaStor 1.0.2 this