new type lua_Unsigned and corresponding projection/injection functions

lmathlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lmathlib.c,v 1.74 2009/11/24 12:05:44 roberto Exp roberto $
+** $Id: lmathlib.c,v 1.75 2010/07/02 11:38:13 roberto Exp roberto $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
@@ -220,7 +220,7 @@ static int math_random (lua_State *L) {
 
 
 static int math_randomseed (lua_State *L) {
-  srand(luaL_checkint(L, 1));
+  srand(luaL_checkunsigned(L, 1));
   (void)rand(); /* discard first value to avoid undesirable correlations */
   return 0;
 }