1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/**********************************************************************
*
* This file is part of Cardpeek, the smart card reader utility.
*
* Copyright 2009-2013 by Alain Pannetrat <L1L1@gmx.com>
*
* Cardpeek is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Cardpeek is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Cardpeek. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <lauxlib.h>
#include "lua_bit.h"
/***********************************************************
* GENERAL FUNCTIONS
* - Binary integer ops that LUA lacks
*/
static int subr_bit_and(lua_State* L)
{
unsigned a = (unsigned)lua_tointeger(L,1);
unsigned b = (unsigned)lua_tointeger(L,2);
lua_pushinteger(L,(int)(a&b));
return 1;
}
static int subr_bit_or(lua_State* L)
{
unsigned a = (unsigned)lua_tointeger(L,1);
unsigned b = (unsigned)lua_tointeger(L,2);
lua_pushinteger(L,(int)(a|b));
return 1;
}
static int subr_bit_xor(lua_State* L)
{
unsigned a = (unsigned)lua_tointeger(L,1);
unsigned b = (unsigned)lua_tointeger(L,2);
lua_pushinteger(L,(int)(a^b));
return 1;
}
static int subr_bit_shl(lua_State* L)
{
unsigned a = (unsigned)lua_tointeger(L,1);
unsigned b = (unsigned)lua_tointeger(L,2);
lua_pushinteger(L,(int)((a<<b)&0xFFFFFFFF));
return 1;
}
static int subr_bit_shr(lua_State* L)
{
unsigned a = (unsigned)lua_tointeger(L,1);
unsigned b = (unsigned)lua_tointeger(L,2);
lua_pushinteger(L,(int)(a>>b));
return 1;
}
static const struct luaL_Reg bitlib [] = {
{ "AND", subr_bit_and },
{ "OR", subr_bit_or },
{ "XOR", subr_bit_xor },
{ "SHL", subr_bit_shl },
{ "SHR", subr_bit_shr },
{ NULL, NULL } /* sentinel */
};
int luaopen_bit(lua_State* L)
{
luaL_newlib(L,bitlib);
lua_setglobal(L,"bit");
/* luaL_openlib(L, "bit", bitlib, 0);*/
return 1;
}
|
