X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Frrd_nan_inf.c;h=9eae726cf509dd0a28d0c248bd0e736cf547c2ba;hb=0b02de621f7461381f81b56a417420f3341b9a0b;hp=473f51b0e4929d8ab3cc1e373177d3a1dd55a111;hpb=5cd0dd8d55ee429121205f8fa5c3dace5301631b;p=rrdtool.git

diff --git a/src/rrd_nan_inf.c b/src/rrd_nan_inf.c
index 473f51b..9eae726 100644
--- a/src/rrd_nan_inf.c
+++ b/src/rrd_nan_inf.c
@@ -1,13 +1,40 @@
 #include "rrd_nan_inf.h"
 
-#if defined(WIN32)
+int       done_nan = 0;
+int       done_inf = 0;
 
-double set_to_DNAN(void) { return (double)fmod(0.0,0.0); }
-double set_to_DINF(void) { return (double)log(0.0); }
+double    dnan;
+double    dinf;
+
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+#include <math.h>
+
+#define NAN_FUNC (double)fmod(0.0,0.0)
+#define INF_FUNC (double)fabs((double)log(0.0))
 
 #else
 
-double set_to_DNAN(void) { return (double)(0.0/0.0); }
-double set_to_DINF(void) { return (double)(1.0/0.0); }
+#define NAN_FUNC (double)(0.0/0.0)
+#define INF_FUNC (double)(1.0/0.0)
 
 #endif
+
+double set_to_DNAN(
+    void)
+{
+    if (!done_nan) {
+        dnan = NAN_FUNC;
+        done_nan = 1;
+    }
+    return dnan;
+}
+
+double set_to_DINF(
+    void)
+{
+    if (!done_inf) {
+        dinf = INF_FUNC;
+        done_inf = 1;
+    }
+    return dinf;
+}