string.find (s, pattern [, init [, plain]]) Looks for the first match of pattern (see

math.sin (x) Returns the sine of x (assumed to be in radians).

luaL_checkinteger[-0, +0, v] lua_Integer luaL_checkinteger (lua_State *L, int arg); Checks whether

package.searchers A table used by require to control how to load modules.

math.ceil (x) Returns the smallest integral value larger than or equal to x.

3.4.4 – Relational Operators Lua supports the following relational operators: ==: equality ~=: inequality <:

3.4.5 – Logical Operators The logical operators in Lua are and, or, and not. Like the control structures (see

table.remove (list [, pos]) Removes from list the element at position pos, returning the value of the removed element. When pos is an integer

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

lua_newuserdata[-0, +1, m] void *lua_newuserdata (lua_State *L, size_t size); This function allocates