"legal" way to convert a float to an integer in C

1 files changed, 7 insertions, 1 deletions

diff --git a/llimits.h b/llimits.h
index e15c1fd5..04405019 100644
--- a/llimits.h
+++ b/llimits.h
@@ -1,5 +1,5 @@
 /*
-** $Id: llimits.h,v 1.104 2013/04/25 21:15:37 roberto Exp roberto $
+** $Id: llimits.h,v 1.105 2013/05/23 21:27:06 roberto Exp roberto $
 ** Limits, basic types, and some other `installation-dependent' definitions
 ** See Copyright Notice in lua.h
 */
@@ -36,6 +36,12 @@ typedef unsigned char lu_byte;
 
 #define MAX_INT (INT_MAX-2)  /* maximum value of an int (-2 for safety) */
 
+
+/* minimum and maximum values for lua_Integer */
+#define MAX_INTEGER     ((lua_Integer)(~(lua_Unsigned)0 >> 1))
+#define MIN_INTEGER     (~MAX_INTEGER)
+
+
 /*
 ** conversion of pointer to integer
 ** this is for hashing only; there is no problem if the integer