From a36c8e1718fd32ea99e29797e5124600a16ccc03 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 18 Jun 2009 13:36:40 -0300
Subject: [PATCH] new macro 'changenvalue'

---
 lobject.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lobject.h b/lobject.h
index cd019899..62c5cb21 100644
--- a/lobject.h
+++ b/lobject.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 2.25 2009/03/26 12:56:38 roberto Exp roberto $
+** $Id: lobject.h,v 2.26 2009/06/17 17:48:34 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -119,6 +119,9 @@ typedef struct lua_TValue {
 #define setnvalue(obj,x) \
   { TValue *i_o=(obj); i_o->value.n=(x); i_o->tt=LUA_TNUMBER; }
 
+#define changenvalue(obj,x) \
+  ( lua_assert((obj)->tt==LUA_TNUMBER), (obj)->value.n=(x) )
+
 #define setpvalue(obj,x) \
   { TValue *i_o=(obj); i_o->value.p=(x); i_o->tt=LUA_TLIGHTUSERDATA; }