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added macro MAX_UINTEGER

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Roberto Ierusalimschy 2014-02-26 09:38:43 -03:00
parent 5c9cb5f0b1
commit 11e762dbcd
1 changed files with 6 additions and 4 deletions
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10
llimits.h
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@ -1,5 +1,5 @@
/*
** $Id: llimits.h,v 1.108 2013/06/19 14:27:00 roberto Exp roberto $
** $Id: llimits.h,v 1.109 2013/08/21 19:02:30 roberto Exp roberto $
** Limits, basic types, and some other `installation-dependent' definitions
** See Copyright Notice in lua.h
*/
@ -43,10 +43,12 @@ 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)
/* maximum value for a lua_Unsigned */
#define MAX_UINTEGER (~(lua_Unsigned)0)
/* minimum and maximum values for lua_Integer */
#define MAX_INTEGER ((lua_Integer)(MAX_UINTEGER >> 1))
#define MIN_INTEGER (~MAX_INTEGER)
/*
** conversion of pointer to integer