matlab data type

Value Type	Precision	Bits (Bytes)
Integers, unsigned	uint	32 (4)
	uint8	8 (1)
	uint16	16 (2)
	uint32	32 (4)
	uint64	64 (8)
	uchar	8 (1)
	unsigned char	8 (1)
	ushort	16 (2)
	ulong	system-dependent
	ubitn	1 ≤ n ≤ 64
Integers, signed	int	32 (4)
	int8	8 (1)
	int16	16 (2)
	int32	32 (4)
	int64	64 (8)
	integer*1	8 (1)
	integer*2	16 (2)
	integer*3	32 (4)
	integer*4	64 (8)
	schar	8 (1)
	signed char	8 (1)
	short	16 (2)
	long	system-dependent
	bitn	1 ≤ n ≤ 64
Floating-point numbers	single	32 (4)
	double	64 (8)
	float	32 (4)
	float32	32 (4)
	float64	64 (8)
	real*4	32 (4)
	real*8	64 (8)
Characters	char*1	8 (1)
	char	Depends on the encoding scheme associated with the file. Set encoding with fopen.