Function math_atan

third-party/lua-5.2.4/src/lmathlib.c:71–74

}

static int math_atan (lua_State *L) {
  lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1)));
  return 1;
}

static int math_atan2 (lua_State *L) {
  lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1),