83 lines
2 KiB
C
83 lines
2 KiB
C
//
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// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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//
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#include <lua.h>
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#include <lauxlib.h>
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static int l_not(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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a = ~a;
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lua_pushnumber(L, a);
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return 1;
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}
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static int l_xor(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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int b = luaL_checkinteger(L, 2);
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a ^= b;
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lua_pushnumber(L, a);
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return 1;
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}
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static int l_and(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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int b = luaL_checkinteger(L, 2);
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a &= b;
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lua_pushnumber(L, a);
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return 1;
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}
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static int l_or(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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int b = luaL_checkinteger(L, 2);
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a |= b;
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lua_pushnumber(L, a);
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return 1;
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}
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static int l_shiftr(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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int b = luaL_checkinteger(L, 2);
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a = a >> b;
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lua_pushnumber(L, a);
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return 1;
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}
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static int l_shiftl(lua_State *L) {
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int a = luaL_checkinteger(L, 1);
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int b = luaL_checkinteger(L, 2);
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a = a << b;
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lua_pushnumber(L, a);
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return 1;
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}
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static const struct luaL_Reg funcs[] = {
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{"band", l_and},
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{"bor", l_or},
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{"bxor", l_xor},
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{"bnot", l_not},
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{"shiftl", l_shiftl},
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{"shiftr", l_shiftr},
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{NULL, NULL}
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};
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int luaopen_libluabitwise(lua_State *L) {
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luaL_register(L, "libluabitwise", funcs);
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return 1;
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}
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