Linux下编写Lua扩展so文件和调用方法实例

#include <math.h>
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

/*  库 open 函数的前置声明   */
int luaopen_mylib(lua_State *L);

static int l_sin (lua_State *L)
{
double d = luaL_checknumber(L, 1);
lua_pushnumber(L, sin(d));
//printf("ok now is  luahook!\n");
return 1; /* number of results */
}

static const luaL_Reg mylib[] =
{
{"lsin", l_sin},
{NULL, NULL} /* 必须以NULL结尾 */
};

 int luaopen_mylib(lua_State *L)
{
  luaI_openlib(L, "mylib", mylib, 0);
return 1;
}