Trait BitCount

pub unsafe trait BitCount {
    const COUNT: usize;
}

Expand description

A trait which defines how many bits are needed to store a struct.

§Safety

Define Num as {i,u}{8,16,32,64,128}.

when calling core::mem::transmute on Self, only bits [0, COUNT) can be non-zero
TryFrom<Num> produces Some(x) <=> core::mem::transmute(num) produces a valid Self(x)
TryFrom<Num> produces None <=> core::mem::transmute(num) produces an invalid state for Self

Required Associated Constants§

const COUNT: usize

The number of bits associated with this type

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

impl BitCount for bool

const COUNT: usize = 1usize

impl BitCount for u8

const COUNT: usize = 8usize

impl BitCount for u16

const COUNT: usize = 16usize

impl BitCount for u32

const COUNT: usize = 32usize

impl BitCount for u64

const COUNT: usize = 64usize

impl BitCount for u128

const COUNT: usize = 128usize

Implementors§

impl BitCount for i2

const COUNT: usize = 2usize

impl BitCount for i3

const COUNT: usize = 3usize

impl BitCount for i4

const COUNT: usize = 4usize

impl BitCount for i5

const COUNT: usize = 5usize

impl BitCount for i6

const COUNT: usize = 6usize

impl BitCount for i7

const COUNT: usize = 7usize

impl BitCount for i9

const COUNT: usize = 9usize

impl BitCount for i10

const COUNT: usize = 10usize

impl BitCount for i11

const COUNT: usize = 11usize

impl BitCount for i12

const COUNT: usize = 12usize

impl BitCount for i13

const COUNT: usize = 13usize

impl BitCount for i14

const COUNT: usize = 14usize

impl BitCount for i15

const COUNT: usize = 15usize

impl BitCount for i17

const COUNT: usize = 17usize

impl BitCount for i18

const COUNT: usize = 18usize

impl BitCount for i19

const COUNT: usize = 19usize

impl BitCount for i20

const COUNT: usize = 20usize

impl BitCount for i21

const COUNT: usize = 21usize

impl BitCount for i22

const COUNT: usize = 22usize

impl BitCount for i23

const COUNT: usize = 23usize

impl BitCount for i24

const COUNT: usize = 24usize

impl BitCount for i25

const COUNT: usize = 25usize

impl BitCount for i26

const COUNT: usize = 26usize

impl BitCount for i27

const COUNT: usize = 27usize

impl BitCount for i28

const COUNT: usize = 28usize

impl BitCount for i29

const COUNT: usize = 29usize

impl BitCount for i30

const COUNT: usize = 30usize

impl BitCount for i31

const COUNT: usize = 31usize

impl BitCount for i33

const COUNT: usize = 33usize

impl BitCount for i34

const COUNT: usize = 34usize

impl BitCount for i35

const COUNT: usize = 35usize

impl BitCount for i36

const COUNT: usize = 36usize

impl BitCount for i37

const COUNT: usize = 37usize

impl BitCount for i38

const COUNT: usize = 38usize

impl BitCount for i39

const COUNT: usize = 39usize

impl BitCount for i40

const COUNT: usize = 40usize

impl BitCount for i41

const COUNT: usize = 41usize

impl BitCount for i42

const COUNT: usize = 42usize

impl BitCount for i43

const COUNT: usize = 43usize

impl BitCount for i44

const COUNT: usize = 44usize

impl BitCount for i45

const COUNT: usize = 45usize

impl BitCount for i46

const COUNT: usize = 46usize

impl BitCount for i47

const COUNT: usize = 47usize

impl BitCount for i48

const COUNT: usize = 48usize

impl BitCount for i49

const COUNT: usize = 49usize

impl BitCount for i50

const COUNT: usize = 50usize

impl BitCount for i51

const COUNT: usize = 51usize

impl BitCount for i52

const COUNT: usize = 52usize

impl BitCount for i53

const COUNT: usize = 53usize

impl BitCount for i54

const COUNT: usize = 54usize

impl BitCount for i55

const COUNT: usize = 55usize

impl BitCount for i56

const COUNT: usize = 56usize

impl BitCount for i57

const COUNT: usize = 57usize

impl BitCount for i58

const COUNT: usize = 58usize

impl BitCount for i59

const COUNT: usize = 59usize

impl BitCount for i60

const COUNT: usize = 60usize

impl BitCount for i61

const COUNT: usize = 61usize

impl BitCount for i62

const COUNT: usize = 62usize

impl BitCount for i63

const COUNT: usize = 63usize

impl BitCount for u1

const COUNT: usize = 1usize

impl BitCount for u2

const COUNT: usize = 2usize

impl BitCount for u3

const COUNT: usize = 3usize

impl BitCount for u4

const COUNT: usize = 4usize

impl BitCount for u5

const COUNT: usize = 5usize

impl BitCount for u6

const COUNT: usize = 6usize

impl BitCount for u7

const COUNT: usize = 7usize

impl BitCount for u9

const COUNT: usize = 9usize

impl BitCount for u10

const COUNT: usize = 10usize

impl BitCount for u11

const COUNT: usize = 11usize

impl BitCount for u12

const COUNT: usize = 12usize

impl BitCount for u13

const COUNT: usize = 13usize

impl BitCount for u14

const COUNT: usize = 14usize

impl BitCount for u15

const COUNT: usize = 15usize

impl BitCount for u17

const COUNT: usize = 17usize

impl BitCount for u18

const COUNT: usize = 18usize

impl BitCount for u19

const COUNT: usize = 19usize

impl BitCount for u20

const COUNT: usize = 20usize

impl BitCount for u21

const COUNT: usize = 21usize

impl BitCount for u22

const COUNT: usize = 22usize

impl BitCount for u23

const COUNT: usize = 23usize

impl BitCount for u24

const COUNT: usize = 24usize

impl BitCount for u25

const COUNT: usize = 25usize

impl BitCount for u26

const COUNT: usize = 26usize

impl BitCount for u27

const COUNT: usize = 27usize

impl BitCount for u28

const COUNT: usize = 28usize

impl BitCount for u29

const COUNT: usize = 29usize

impl BitCount for u30

const COUNT: usize = 30usize

impl BitCount for u31

const COUNT: usize = 31usize

impl BitCount for u33

const COUNT: usize = 33usize

impl BitCount for u34

const COUNT: usize = 34usize

impl BitCount for u35

const COUNT: usize = 35usize

impl BitCount for u36

const COUNT: usize = 36usize

impl BitCount for u37

const COUNT: usize = 37usize

impl BitCount for u38

const COUNT: usize = 38usize

impl BitCount for u39

const COUNT: usize = 39usize

impl BitCount for u40

const COUNT: usize = 40usize

impl BitCount for u41

const COUNT: usize = 41usize

impl BitCount for u42

const COUNT: usize = 42usize

impl BitCount for u43

const COUNT: usize = 43usize

impl BitCount for u44

const COUNT: usize = 44usize

impl BitCount for u45

const COUNT: usize = 45usize

impl BitCount for u46

const COUNT: usize = 46usize

impl BitCount for u47

const COUNT: usize = 47usize

impl BitCount for u48

const COUNT: usize = 48usize

impl BitCount for u49

const COUNT: usize = 49usize

impl BitCount for u50

const COUNT: usize = 50usize

impl BitCount for u51

const COUNT: usize = 51usize

impl BitCount for u52

const COUNT: usize = 52usize

impl BitCount for u53

const COUNT: usize = 53usize

impl BitCount for u54

const COUNT: usize = 54usize

impl BitCount for u55

const COUNT: usize = 55usize

impl BitCount for u56

const COUNT: usize = 56usize

impl BitCount for u57

const COUNT: usize = 57usize

impl BitCount for u58

const COUNT: usize = 58usize

impl BitCount for u59

const COUNT: usize = 59usize

impl BitCount for u60

const COUNT: usize = 60usize

impl BitCount for u61

const COUNT: usize = 61usize

impl BitCount for u62

const COUNT: usize = 62usize

impl BitCount for u63

const COUNT: usize = 63usize