Integer representation - rust-course

Table 1:Unsigned representation

Binary	Integer
`00000000`	0
`00000001`	1
`00000010`	2
`00000011`	3
…	…
`11111111`	255

Table 2:Sign-magnitude representation

Binary	Integer
`00000000`	0
`00000001`	1
`00000010`	2
`00000011`	3
`01111111`	127
`10000000`	-0
`10000001`	-1
`10000010`	-2
…	…
`11111101`	-125
`11111110`	-126
`11111111`	-127

Table 3:Ones’ complement representation

Binary	Integer
`00000000`	0
`00000001`	1
`00000010`	2
`00000011`	3
`01111111`	127
`10000000`	-127
`10000001`	-126
`10000010`	-125
…	…
`11111101`	-2
`11111110`	-1
`11111111`	-0

Table 4:Two’s complement representation

Binary	Integer
`00000000`	0
`00000001`	1
`00000010`	2
`00000011`	3
`01111111`	127
`10000000`	-128
`10000001`	-127
`10000010`	-126
…	…
`11111101`	-3
`11111110`	-2
`11111111`	-1

let c = -16i8;
println!("{c:b}");
let c = -16i16;
println!("{c:b}");
let c = 16i8;
println!("{c:b}");
let c = 16u8;
println!("{c:b}");

11110000

1111111111110000