From: Markus Stenberg <markus.stenberg@iki.fi>
Date: Tue, 18 Mar 2014 14:29:49 +0000 (+0200)
Subject: nan function requires -lm on some platforms; use of NAN is better, if available.
X-Git-Tag: json-c-0.12-20140410~11^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a1c8991e135f7fbdb7d4254c699b1cf0085c23e8;p=json-c

nan function requires -lm on some platforms; use of NAN is better, if available.
---

diff --git a/json_tokener.c b/json_tokener.c
index 0c800d8..9862f9e 100644
--- a/json_tokener.c
+++ b/json_tokener.c
@@ -50,6 +50,11 @@
 # error You do not have strncasecmp on your system.
 #endif /* HAVE_STRNCASECMP */
 
+/* Use C99 NAN by default; if not available, nan("") should work too. */
+#ifndef NAN
+#define NAN nan("")
+#endif /* !NAN */
+
 static const char json_null_str[] = "null";
 static const int json_null_str_len = sizeof(json_null_str) - 1;
 static const char json_nan_str[] = "NaN";
@@ -352,7 +357,7 @@ struct json_object* json_tokener_parse_ex(struct json_tokener *tok,
 	{
 		if (tok->st_pos == json_nan_str_len)
 		{
-			current = json_object_new_double(nan(""));
+			current = json_object_new_double(NAN);
 			saved_state = json_tokener_state_finish;
 			state = json_tokener_state_eatws;
 			goto redo_char;