Types

You can use standard C types but MSXgl provide some shortcut that help to write short code and makes data size and sign explicit (which is so important for creating efficient code).

MSXgl's types can be found in core.h.

Type	Desc.	SDCC equivalent
bool	Boolean (8 bits)	unsigned char
i8	8 bits signed integer	signed char
u8	8 bits unsigned integer	unsigned char
i16	16 bits signed integer	signed short
u16	16 bits unsigned integer	unsigned short
i32	32 bits signed integer	signed long
u32	32 bits unsigned integer	unsigned long
i64	64 bits signed integer	signed long long
u64	64 bits unsigned integer	unsigned long long
f32	32 bits float (IEEE 754)	float
c8	8 bits character (ASCII, UTF-8)	unsigned char
c16	16 bits character (UTF-16, JIS, etc.)	unsigned short
ptr	Pointer	void*
callback	Callback default signature	void (*)(void)

Related consant:

#define NULL	0	// Pointer "NULL" value
#define TRUE	1	// Value for "TRUE" boolean
#define FALSE	0	// Value for "FALSE" boolean

See also:

• Page about usage of boolean in MSXgl.
• SDCC documentation