Function math_abs

other_src/lua/src/lmathlib.cpp:36–39

static int math_abs (lua_State *L) {
  lua_pushnumber(L, fabs(luaL_checknumber(L, 1)));
  return 1;
}

static int math_sin (lua_State *L) {
  lua_pushnumber(L, sin(luaL_checknumber(L, 1)));