From a24fde1889125465c95c7641084252f2f389dca6 Mon Sep 17 00:00:00 2001
From: emboss <Martin.Bosslet@googlemail.com>
Date: Tue, 11 Sep 2012 03:02:28 +0200
Subject: Define DBL_DIG only if it wasn't previously defined

DBL_DIG may already be defined on the target system,
defining it without checking first may overwrite
system values.
---
 src/string.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index a454aab97..d8fe56790 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2598,7 +2598,10 @@ mrb_cstr_to_dbl(mrb_state *mrb, const char * p, int badcheck)
   double d;
 //  const char *ellipsis = "";
 //  int w;
-#define DBL_DIG 16
+#if !defined(DBL_DIG)
+  #define DBL_DIG 16
+#endif
+
   enum {max_width = 20};
 #define OutOfRange() (((w = end - p) > max_width) ? \
       (w = max_width, ellipsis = "...") : \
-- 
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