Lua to C conversion rules

These conversion rules apply when using/writing Lua values to C types :

• Getting arrays indexed value or struct/union fields
• Reading external variables
• Retrieving return values from C calls

C type	Lua type
signed char, int, long, long long, int16_t, int32_t, int64_t	number
unsigned char, int, long, long long, uint16_t, uint32_t, uint64_t, size_t
doublefloat	number
bool	boolean
C pointer	Pointer
struct	Struct
union	Union
C array	[ ] Array