fix: windows build failure about defining nan

diff --git a/cJSON.c b/cJSON.c
index 4c6a308eece9f19f46a66556b6a317a12f119fa5..6bc102bf5889e543cd679a6117a72ce4598613dc 100644 (file)
--- a/cJSON.c
+++ b/cJSON.c
@@ -78,8 +78,12 @@
 #endif
 
 #ifndef NAN
+#ifdef _WIN32
+#define NAN sqrt(-1.0)
+#else
 #define NAN 0.0/0.0
 #endif
+#endif
 
 typedef struct {
     const unsigned char *json;