Built‐In Data Types

THIS	C	Rust	MLIR	numpy	ref
void	void	?			https://doc.rust-lang.org/core/ffi/enum.c_void.html
u2	bool C23	bool	i1	``
i8	char, int8_t	i8			https://doc.rust-lang.org/core/ffi/type.c_char.html
i16	short (int), int16_t	i16			https://doc.rust-lang.org/core/ffi/type.c_short.html
i32	int, int32_t	i32	i32	int32_t	https://doc.rust-lang.org/core/ffi/type.c_int.html
i64	long (int), int64_t	i64			https://doc.rust-lang.org/core/ffi/type.c_long.html
i128	long long (int)	i128			https://doc.rust-lang.org/core/ffi/type.c_longlong.html
u8	unsigned char, uint8_t	u8	u8		https://doc.rust-lang.org/core/ffi/type.c_uchar.html
u16	unsigned short (int), uint16_t	u16	u16		https://doc.rust-lang.org/core/ffi/type.c_ushort.html
u32	unsigned (int), uint32_t	u32	u32		https://doc.rust-lang.org/core/ffi/type.c_uint.html
u64	unsigned long (int), uint64_t	u64	u64		https://doc.rust-lang.org/core/ffi/type.c_ulong.html
u128	unsigned long long (int)	u128			https://doc.rust-lang.org/core/ffi/type.c_ulonglong.html
f16	``	f16			https://rust-lang.github.io/rfcs/3453-f16-and-f128.html
f32	float	f32			https://doc.rust-lang.org/core/ffi/type.c_float.html
f64	double	f64			https://doc.rust-lang.org/core/ffi/type.c_double.html
f128	long double	f128			https://rust-lang.github.io/rfcs/3453-f16-and-f128.html
usize	uintptr_t, size_t	usize			https://doc.rust-lang.org/core/ffi/type.c_size_t.html
isize	intptr_t, ssize_t, ptrdiff_t	isize			https://doc.rust-lang.org/core/ffi/type.c_ssize_t.html
c64	float complex			csingle, complex64	^1
c128	double complex			cdouble, complex128	^2
c256	long double complex			clongdouble, complex256	^3

Ref

• https://github.com/rust-lang/libc/issues/1400