From fb82e75cd118d84e46acc1d73c48aa8c23c3118a Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 13 May 2010 11:53:56 +0200
Subject: [PATCH] include limits.h otherwise no double precison macros

---
 redis.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/redis.c b/redis.c
index f63aad96b..0c411268c 100644
--- a/redis.c
+++ b/redis.c
@@ -57,6 +57,7 @@
 #include <sys/resource.h>
 #include <sys/uio.h>
 #include <limits.h>
+#include <float.h>
 #include <math.h>
 #include <pthread.h>
 
@@ -3523,8 +3524,8 @@ static int rdbSaveDoubleValue(FILE *fp, double val) {
          * where casting to long long is safe. Then using two castings we
          * make sure the decimal part is zero. If all this is true we use
          * integer printing function that is much faster. */
-        double min = -4503599627370495;
-        double max = 4503599627370496;
+        double min = -4503599627370495; /* (2^52)-1 */
+        double max = 4503599627370496; /* -(2^52) */
         if (val > min && val < max && val == ((double)((long long)val)))
             ll2string((char*)buf+1,sizeof(buf),(long long)val);
         else
-- 
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