math.deg (x) Converts the angle x from radians to degrees.

package.cpath The path used by require to search for a C loader. Lua

tonumber (e [, base]) When called with no base, tonumber tries to convert its argument to a number. If the argument is already a number or a string convertible

debug.traceback ([thread,] [message [, level]]) If message is present but is neither a string nor nil, this function returns message without further

string.upper (s)

lua_Alloc typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize,

lua_callk[-(nargs + 1), +nresults, e] void lua_callk (lua_State *L, int nargs,

string.rep (s, n [, sep])nssepsepn (Note that it is very easy to exhaust the memory of your machine with a single

luaL_addvalue[-1, +?, m] void luaL_addvalue (luaL_Buffer *B); Adds the value at the top of the

3.4.1 – Arithmetic Operators Lua supports the following arithmetic operators: +: addition -: subtraction *: