# Primitive Type usize

1.0.0 ·## Expand description

The pointer-sized unsigned integer type.

The size of this primitive is how many bytes it takes to reference any location in memory. For example, on a 32 bit target, this is 4 bytes and on a 64 bit target, this is 8 bytes.

## Implementations§

source§### impl usize

### impl usize

source#### pub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>

#### pub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>

Converts a string slice in a given base to an integer.

The string is expected to be an optional `+`

sign
followed by digits.
Leading and trailing whitespace represent an error.
Digits are a subset of these characters, depending on `radix`

:

`0-9`

`a-z`

`A-Z`

##### §Panics

This function panics if `radix`

is not in the range from 2 to 36.

##### §Examples

Basic usage:

`assert_eq!(usize::from_str_radix("A", 16), Ok(10));`

Runconst: 1.32.0 · source#### pub const fn count_ones(self) -> u32

#### pub const fn count_ones(self) -> u32

const: 1.32.0 · source#### pub const fn count_zeros(self) -> u32

#### pub const fn count_zeros(self) -> u32

const: 1.32.0 · source#### pub const fn leading_zeros(self) -> u32

#### pub const fn leading_zeros(self) -> u32

Returns the number of leading zeros in the binary representation of `self`

.

Depending on what you’re doing with the value, you might also be interested in the
`ilog2`

function which returns a consistent number, even if the type widens.

##### §Examples

Basic usage:

```
let n = usize::MAX >> 2;
assert_eq!(n.leading_zeros(), 2);
```

Runconst: 1.32.0 · source#### pub const fn trailing_zeros(self) -> u32

#### pub const fn trailing_zeros(self) -> u32

1.46.0 (const: 1.46.0) · source#### pub const fn leading_ones(self) -> u32

#### pub const fn leading_ones(self) -> u32

1.46.0 (const: 1.46.0) · source#### pub const fn trailing_ones(self) -> u32

#### pub const fn trailing_ones(self) -> u32

const: 1.32.0 · source#### pub const fn rotate_left(self, n: u32) -> Self

#### pub const fn rotate_left(self, n: u32) -> Self

const: 1.32.0 · source#### pub const fn rotate_right(self, n: u32) -> Self

#### pub const fn rotate_right(self, n: u32) -> Self

Shifts the bits to the right by a specified amount, `n`

,
wrapping the truncated bits to the beginning of the resulting
integer.

Please note this isn’t the same operation as the `>>`

shifting operator!

##### §Examples

Basic usage:

```
let n = 0x6e10aausize;
let m = 0xaa00000000006e1;
assert_eq!(n.rotate_right(12), m);
```

Runconst: 1.32.0 · source#### pub const fn swap_bytes(self) -> Self

#### pub const fn swap_bytes(self) -> Self

1.37.0 (const: 1.37.0) · source#### pub const fn reverse_bits(self) -> Self

#### pub const fn reverse_bits(self) -> Self

Reverses the order of bits in the integer. The least significant bit becomes the most significant bit, second least-significant bit becomes second most-significant bit, etc.

##### §Examples

Basic usage:

```
let n = 0x1234567890123456usize;
let m = n.reverse_bits();
assert_eq!(m, 0x6a2c48091e6a2c48);
assert_eq!(0, 0usize.reverse_bits());
```

Runconst: 1.32.0 · source#### pub const fn from_be(x: Self) -> Self

#### pub const fn from_be(x: Self) -> Self

Converts an integer from big endian to the target’s endianness.

On big endian this is a no-op. On little endian the bytes are swapped.

##### §Examples

Basic usage:

```
let n = 0x1Ausize;
if cfg!(target_endian = "big") {
assert_eq!(usize::from_be(n), n)
} else {
assert_eq!(usize::from_be(n), n.swap_bytes())
}
```

Runconst: 1.32.0 · source#### pub const fn from_le(x: Self) -> Self

#### pub const fn from_le(x: Self) -> Self

Converts an integer from little endian to the target’s endianness.

On little endian this is a no-op. On big endian the bytes are swapped.

##### §Examples

Basic usage:

```
let n = 0x1Ausize;
if cfg!(target_endian = "little") {
assert_eq!(usize::from_le(n), n)
} else {
assert_eq!(usize::from_le(n), n.swap_bytes())
}
```

Runconst: 1.47.0 · source#### pub const fn checked_add(self, rhs: Self) -> Option<Self>

#### pub const fn checked_add(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_add(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_add(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict integer addition. Computes `self + rhs`

, panicking
if overflow occurred.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!((usize::MAX - 2).strict_add(1), usize::MAX - 1);
```

RunThe following panics because of overflow:

const: unstable · source#### pub unsafe fn unchecked_add(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`unchecked_math`

#85122)

#### pub unsafe fn unchecked_add(self, rhs: Self) -> Self

`unchecked_math`

#85122)Unchecked integer addition. Computes `self + rhs`

, assuming overflow
cannot occur.

##### §Safety

This results in undefined behavior when
`self + rhs > usize::MAX`

or `self + rhs < usize::MIN`

,
i.e. when `checked_add`

would return `None`

.

1.66.0 (const: 1.66.0) · source#### pub const fn checked_add_signed(self, rhs: isize) -> Option<Self>

#### pub const fn checked_add_signed(self, rhs: isize) -> Option<Self>

const: unstable · source#### pub fn strict_add_signed(self, rhs: isize) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_add_signed(self, rhs: isize) -> Self

`strict_overflow_ops`

#118260)Strict addition with a signed integer. Computes `self + rhs`

,
panicking if overflow occurred.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(1usize.strict_add_signed(2), 3);
```

RunThe following panic because of overflow:

const: 1.47.0 · source#### pub const fn checked_sub(self, rhs: Self) -> Option<Self>

#### pub const fn checked_sub(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_sub(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_sub(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict integer subtraction. Computes `self - rhs`

, panicking if
overflow occurred.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(1usize.strict_sub(1), 0);
```

RunThe following panics because of overflow:

const: unstable · source#### pub unsafe fn unchecked_sub(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`unchecked_math`

#85122)

#### pub unsafe fn unchecked_sub(self, rhs: Self) -> Self

`unchecked_math`

#85122)Unchecked integer subtraction. Computes `self - rhs`

, assuming overflow
cannot occur.

##### §Safety

This results in undefined behavior when
`self - rhs > usize::MAX`

or `self - rhs < usize::MIN`

,
i.e. when `checked_sub`

would return `None`

.

const: 1.47.0 · source#### pub const fn checked_mul(self, rhs: Self) -> Option<Self>

#### pub const fn checked_mul(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_mul(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_mul(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict integer multiplication. Computes `self * rhs`

, panicking if
overflow occurred.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(5usize.strict_mul(1), 5);
```

RunThe following panics because of overflow:

const: unstable · source#### pub unsafe fn unchecked_mul(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`unchecked_math`

#85122)

#### pub unsafe fn unchecked_mul(self, rhs: Self) -> Self

`unchecked_math`

#85122)Unchecked integer multiplication. Computes `self * rhs`

, assuming overflow
cannot occur.

##### §Safety

This results in undefined behavior when
`self * rhs > usize::MAX`

or `self * rhs < usize::MIN`

,
i.e. when `checked_mul`

would return `None`

.

const: 1.52.0 · source#### pub const fn checked_div(self, rhs: Self) -> Option<Self>

#### pub const fn checked_div(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_div(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_div(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict integer division. Computes `self / rhs`

.
Strict division on unsigned types is just normal division.
There’s no way overflow could ever happen.
This function exists, so that all operations
are accounted for in the strict operations.

##### §Panics

This function will panic if `rhs`

is zero.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(100usize.strict_div(10), 10);
```

RunThe following panics because of division by zero:

1.38.0 (const: 1.52.0) · source#### pub const fn checked_div_euclid(self, rhs: Self) -> Option<Self>

#### pub const fn checked_div_euclid(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_div_euclid(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_div_euclid(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict Euclidean division. Computes `self.div_euclid(rhs)`

.
Strict division on unsigned types is just normal division.
There’s no way overflow could ever happen.
This function exists, so that all operations
are accounted for in the strict operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self.strict_div(rhs)`

.

##### §Panics

This function will panic if `rhs`

is zero.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(100usize.strict_div_euclid(10), 10);
```

RunThe following panics because of division by zero:

1.7.0 (const: 1.52.0) · source#### pub const fn checked_rem(self, rhs: Self) -> Option<Self>

#### pub const fn checked_rem(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_rem(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_rem(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict integer remainder. Computes `self % rhs`

.
Strict remainder calculation on unsigned types is
just the regular remainder calculation.
There’s no way overflow could ever happen.
This function exists, so that all operations
are accounted for in the strict operations.

##### §Panics

This function will panic if `rhs`

is zero.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(100usize.strict_rem(10), 0);
```

RunThe following panics because of division by zero:

1.38.0 (const: 1.52.0) · source#### pub const fn checked_rem_euclid(self, rhs: Self) -> Option<Self>

#### pub const fn checked_rem_euclid(self, rhs: Self) -> Option<Self>

const: unstable · source#### pub fn strict_rem_euclid(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_rem_euclid(self, rhs: Self) -> Self

`strict_overflow_ops`

#118260)Strict Euclidean modulo. Computes `self.rem_euclid(rhs)`

.
Strict modulo calculation on unsigned types is
just the regular remainder calculation.
There’s no way overflow could ever happen.
This function exists, so that all operations
are accounted for in the strict operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self.strict_rem(rhs)`

.

##### §Panics

This function will panic if `rhs`

is zero.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(100usize.strict_rem_euclid(10), 0);
```

RunThe following panics because of division by zero:

1.67.0 (const: 1.67.0) · source#### pub const fn ilog(self, base: Self) -> u32

#### pub const fn ilog(self, base: Self) -> u32

Returns the logarithm of the number with respect to an arbitrary base, rounded down.

This method might not be optimized owing to implementation details;
`ilog2`

can produce results more efficiently for base 2, and `ilog10`

can produce results more efficiently for base 10.

##### §Panics

This function will panic if `self`

is zero, or if `base`

is less than 2.

##### §Examples

`assert_eq!(5usize.ilog(5), 1);`

Run1.67.0 (const: 1.67.0) · source#### pub const fn checked_ilog(self, base: Self) -> Option<u32>

#### pub const fn checked_ilog(self, base: Self) -> Option<u32>

Returns the logarithm of the number with respect to an arbitrary base, rounded down.

Returns `None`

if the number is zero, or if the base is not at least 2.

This method might not be optimized owing to implementation details;
`checked_ilog2`

can produce results more efficiently for base 2, and
`checked_ilog10`

can produce results more efficiently for base 10.

##### §Examples

`assert_eq!(5usize.checked_ilog(5), Some(1));`

Run1.67.0 (const: 1.67.0) · source#### pub const fn checked_ilog2(self) -> Option<u32>

#### pub const fn checked_ilog2(self) -> Option<u32>

1.67.0 (const: 1.67.0) · source#### pub const fn checked_ilog10(self) -> Option<u32>

#### pub const fn checked_ilog10(self) -> Option<u32>

1.7.0 (const: 1.47.0) · source#### pub const fn checked_neg(self) -> Option<Self>

#### pub const fn checked_neg(self) -> Option<Self>

const: unstable · source#### pub fn strict_neg(self) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_neg(self) -> Self

`strict_overflow_ops`

#118260)Strict negation. Computes `-self`

, panicking unless `self == 0`

.

Note that negating any positive integer will overflow.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(0usize.strict_neg(), 0);
```

RunThe following panics because of overflow:

1.7.0 (const: 1.47.0) · source#### pub const fn checked_shl(self, rhs: u32) -> Option<Self>

#### pub const fn checked_shl(self, rhs: u32) -> Option<Self>

const: unstable · source#### pub fn strict_shl(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_shl(self, rhs: u32) -> Self

`strict_overflow_ops`

#118260)Strict shift left. Computes `self << rhs`

, panicking if `rhs`

is larger
than or equal to the number of bits in `self`

.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(0x1usize.strict_shl(4), 0x10);
```

RunThe following panics because of overflow:

const: unstable · source#### pub unsafe fn unchecked_shl(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (`unchecked_shifts`

#85122)

#### pub unsafe fn unchecked_shl(self, rhs: u32) -> Self

`unchecked_shifts`

#85122)Unchecked shift left. Computes `self << rhs`

, assuming that
`rhs`

is less than the number of bits in `self`

.

##### §Safety

This results in undefined behavior if `rhs`

is larger than
or equal to the number of bits in `self`

,
i.e. when `checked_shl`

would return `None`

.

1.7.0 (const: 1.47.0) · source#### pub const fn checked_shr(self, rhs: u32) -> Option<Self>

#### pub const fn checked_shr(self, rhs: u32) -> Option<Self>

const: unstable · source#### pub fn strict_shr(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_shr(self, rhs: u32) -> Self

`strict_overflow_ops`

#118260)Strict shift right. Computes `self >> rhs`

, panicking `rhs`

is
larger than or equal to the number of bits in `self`

.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(0x10usize.strict_shr(4), 0x1);
```

RunThe following panics because of overflow:

const: unstable · source#### pub unsafe fn unchecked_shr(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (`unchecked_shifts`

#85122)

#### pub unsafe fn unchecked_shr(self, rhs: u32) -> Self

`unchecked_shifts`

#85122)Unchecked shift right. Computes `self >> rhs`

, assuming that
`rhs`

is less than the number of bits in `self`

.

##### §Safety

This results in undefined behavior if `rhs`

is larger than
or equal to the number of bits in `self`

,
i.e. when `checked_shr`

would return `None`

.

1.34.0 (const: 1.50.0) · source#### pub const fn checked_pow(self, exp: u32) -> Option<Self>

#### pub const fn checked_pow(self, exp: u32) -> Option<Self>

const: unstable · source#### pub fn strict_pow(self, exp: u32) -> Self

🔬This is a nightly-only experimental API. (`strict_overflow_ops`

#118260)

#### pub fn strict_pow(self, exp: u32) -> Self

`strict_overflow_ops`

#118260)Strict exponentiation. Computes `self.pow(exp)`

, panicking if
overflow occurred.

##### §Panics

###### §Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

##### §Examples

Basic usage:

```
#![feature(strict_overflow_ops)]
assert_eq!(2usize.strict_pow(5), 32);
```

RunThe following panics because of overflow:

const: 1.47.0 · source#### pub const fn saturating_add(self, rhs: Self) -> Self

#### pub const fn saturating_add(self, rhs: Self) -> Self

1.66.0 (const: 1.66.0) · source#### pub const fn saturating_add_signed(self, rhs: isize) -> Self

#### pub const fn saturating_add_signed(self, rhs: isize) -> Self

Saturating addition with a signed integer. Computes `self + rhs`

,
saturating at the numeric bounds instead of overflowing.

##### §Examples

Basic usage:

```
assert_eq!(1usize.saturating_add_signed(2), 3);
assert_eq!(1usize.saturating_add_signed(-2), 0);
assert_eq!((usize::MAX - 2).saturating_add_signed(4), usize::MAX);
```

Runconst: 1.47.0 · source#### pub const fn saturating_sub(self, rhs: Self) -> Self

#### pub const fn saturating_sub(self, rhs: Self) -> Self

1.7.0 (const: 1.47.0) · source#### pub const fn saturating_mul(self, rhs: Self) -> Self

#### pub const fn saturating_mul(self, rhs: Self) -> Self

1.58.0 (const: 1.58.0) · source#### pub const fn saturating_div(self, rhs: Self) -> Self

#### pub const fn saturating_div(self, rhs: Self) -> Self

1.34.0 (const: 1.50.0) · source#### pub const fn saturating_pow(self, exp: u32) -> Self

#### pub const fn saturating_pow(self, exp: u32) -> Self

const: 1.32.0 · source#### pub const fn wrapping_add(self, rhs: Self) -> Self

#### pub const fn wrapping_add(self, rhs: Self) -> Self

1.66.0 (const: 1.66.0) · source#### pub const fn wrapping_add_signed(self, rhs: isize) -> Self

#### pub const fn wrapping_add_signed(self, rhs: isize) -> Self

Wrapping (modular) addition with a signed integer. Computes
`self + rhs`

, wrapping around at the boundary of the type.

##### §Examples

Basic usage:

```
assert_eq!(1usize.wrapping_add_signed(2), 3);
assert_eq!(1usize.wrapping_add_signed(-2), usize::MAX);
assert_eq!((usize::MAX - 2).wrapping_add_signed(4), 1);
```

Runconst: 1.32.0 · source#### pub const fn wrapping_sub(self, rhs: Self) -> Self

#### pub const fn wrapping_sub(self, rhs: Self) -> Self

const: 1.32.0 · source#### pub const fn wrapping_mul(self, rhs: Self) -> Self

#### pub const fn wrapping_mul(self, rhs: Self) -> Self

Wrapping (modular) multiplication. Computes `self * rhs`

, wrapping around at the boundary of the type.

##### §Examples

Basic usage:

Please note that this example is shared between integer types.
Which explains why `u8`

is used here.

```
assert_eq!(10u8.wrapping_mul(12), 120);
assert_eq!(25u8.wrapping_mul(12), 44);
```

Run1.2.0 (const: 1.52.0) · source#### pub const fn wrapping_div(self, rhs: Self) -> Self

#### pub const fn wrapping_div(self, rhs: Self) -> Self

Wrapping (modular) division. Computes `self / rhs`

.
Wrapped division on unsigned types is just normal division.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage:

`assert_eq!(100usize.wrapping_div(10), 10);`

Run1.38.0 (const: 1.52.0) · source#### pub const fn wrapping_div_euclid(self, rhs: Self) -> Self

#### pub const fn wrapping_div_euclid(self, rhs: Self) -> Self

Wrapping Euclidean division. Computes `self.div_euclid(rhs)`

.
Wrapped division on unsigned types is just normal division.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self.wrapping_div(rhs)`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage:

`assert_eq!(100usize.wrapping_div_euclid(10), 10);`

Run1.2.0 (const: 1.52.0) · source#### pub const fn wrapping_rem(self, rhs: Self) -> Self

#### pub const fn wrapping_rem(self, rhs: Self) -> Self

Wrapping (modular) remainder. Computes `self % rhs`

.
Wrapped remainder calculation on unsigned types is
just the regular remainder calculation.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage:

`assert_eq!(100usize.wrapping_rem(10), 0);`

Run1.38.0 (const: 1.52.0) · source#### pub const fn wrapping_rem_euclid(self, rhs: Self) -> Self

#### pub const fn wrapping_rem_euclid(self, rhs: Self) -> Self

Wrapping Euclidean modulo. Computes `self.rem_euclid(rhs)`

.
Wrapped modulo calculation on unsigned types is
just the regular remainder calculation.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self.wrapping_rem(rhs)`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage:

`assert_eq!(100usize.wrapping_rem_euclid(10), 0);`

Run1.2.0 (const: 1.32.0) · source#### pub const fn wrapping_neg(self) -> Self

#### pub const fn wrapping_neg(self) -> Self

Wrapping (modular) negation. Computes `-self`

,
wrapping around at the boundary of the type.

Since unsigned types do not have negative equivalents
all applications of this function will wrap (except for `-0`

).
For values smaller than the corresponding signed type’s maximum
the result is the same as casting the corresponding signed value.
Any larger values are equivalent to `MAX + 1 - (val - MAX - 1)`

where
`MAX`

is the corresponding signed type’s maximum.

##### §Examples

Basic usage:

```
assert_eq!(0_usize.wrapping_neg(), 0);
assert_eq!(usize::MAX.wrapping_neg(), 1);
assert_eq!(13_usize.wrapping_neg(), (!13) + 1);
assert_eq!(42_usize.wrapping_neg(), !(42 - 1));
```

Run1.2.0 (const: 1.32.0) · source#### pub const fn wrapping_shl(self, rhs: u32) -> Self

#### pub const fn wrapping_shl(self, rhs: u32) -> Self

Panic-free bitwise shift-left; yields `self << mask(rhs)`

,
where `mask`

removes any high-order bits of `rhs`

that
would cause the shift to exceed the bitwidth of the type.

Note that this is *not* the same as a rotate-left; the
RHS of a wrapping shift-left is restricted to the range
of the type, rather than the bits shifted out of the LHS
being returned to the other end. The primitive integer
types all implement a `rotate_left`

function,
which may be what you want instead.

##### §Examples

Basic usage:

```
assert_eq!(1usize.wrapping_shl(7), 128);
assert_eq!(1usize.wrapping_shl(128), 1);
```

Run1.2.0 (const: 1.32.0) · source#### pub const fn wrapping_shr(self, rhs: u32) -> Self

#### pub const fn wrapping_shr(self, rhs: u32) -> Self

Panic-free bitwise shift-right; yields `self >> mask(rhs)`

,
where `mask`

removes any high-order bits of `rhs`

that
would cause the shift to exceed the bitwidth of the type.

Note that this is *not* the same as a rotate-right; the
RHS of a wrapping shift-right is restricted to the range
of the type, rather than the bits shifted out of the LHS
being returned to the other end. The primitive integer
types all implement a `rotate_right`

function,
which may be what you want instead.

##### §Examples

Basic usage:

```
assert_eq!(128usize.wrapping_shr(7), 1);
assert_eq!(128usize.wrapping_shr(128), 128);
```

Run1.34.0 (const: 1.50.0) · source#### pub const fn wrapping_pow(self, exp: u32) -> Self

#### pub const fn wrapping_pow(self, exp: u32) -> Self

1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_add(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_add(self, rhs: Self) -> (Self, bool)

Calculates `self`

+ `rhs`

Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

##### §Examples

Basic usage

```
assert_eq!(5usize.overflowing_add(2), (7, false));
assert_eq!(usize::MAX.overflowing_add(1), (0, true));
```

Runconst: unstable · source#### pub fn carrying_add(self, rhs: Self, carry: bool) -> (Self, bool)

🔬This is a nightly-only experimental API. (`bigint_helper_methods`

#85532)

#### pub fn carrying_add(self, rhs: Self, carry: bool) -> (Self, bool)

`bigint_helper_methods`

#85532)Calculates `self`

+ `rhs`

+ `carry`

and returns a tuple containing
the sum and the output carry.

Performs “ternary addition” of two integer operands and a carry-in bit, and returns an output integer and a carry-out bit. This allows chaining together multiple additions to create a wider addition, and can be useful for bignum addition.

This can be thought of as a 64-bit “full adder”, in the electronics sense.

If the input carry is false, this method is equivalent to
`overflowing_add`

, and the output carry is
equal to the overflow flag. Note that although carry and overflow
flags are similar for unsigned integers, they are different for
signed integers.

##### §Examples

```
#![feature(bigint_helper_methods)]
// 3 MAX (a = 3 × 2^64 + 2^64 - 1)
// + 5 7 (b = 5 × 2^64 + 7)
// ---------
// 9 6 (sum = 9 × 2^64 + 6)
let (a1, a0): (usize, usize) = (3, usize::MAX);
let (b1, b0): (usize, usize) = (5, 7);
let carry0 = false;
let (sum0, carry1) = a0.carrying_add(b0, carry0);
assert_eq!(carry1, true);
let (sum1, carry2) = a1.carrying_add(b1, carry1);
assert_eq!(carry2, false);
assert_eq!((sum1, sum0), (9, 6));
```

Run1.66.0 (const: 1.66.0) · source#### pub const fn overflowing_add_signed(self, rhs: isize) -> (Self, bool)

#### pub const fn overflowing_add_signed(self, rhs: isize) -> (Self, bool)

Calculates `self`

+ `rhs`

with a signed `rhs`

Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

##### §Examples

Basic usage:

```
assert_eq!(1usize.overflowing_add_signed(2), (3, false));
assert_eq!(1usize.overflowing_add_signed(-2), (usize::MAX, true));
assert_eq!((usize::MAX - 2).overflowing_add_signed(4), (1, true));
```

Run1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool)

Calculates `self`

- `rhs`

Returns a tuple of the subtraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

##### §Examples

Basic usage

```
assert_eq!(5usize.overflowing_sub(2), (3, false));
assert_eq!(0usize.overflowing_sub(1), (usize::MAX, true));
```

Runconst: unstable · source#### pub fn borrowing_sub(self, rhs: Self, borrow: bool) -> (Self, bool)

🔬This is a nightly-only experimental API. (`bigint_helper_methods`

#85532)

#### pub fn borrowing_sub(self, rhs: Self, borrow: bool) -> (Self, bool)

`bigint_helper_methods`

#85532)Calculates `self`

− `rhs`

− `borrow`

and returns a tuple
containing the difference and the output borrow.

Performs “ternary subtraction” by subtracting both an integer
operand and a borrow-in bit from `self`

, and returns an output
integer and a borrow-out bit. This allows chaining together multiple
subtractions to create a wider subtraction, and can be useful for
bignum subtraction.

##### §Examples

```
#![feature(bigint_helper_methods)]
// 9 6 (a = 9 × 2^64 + 6)
// - 5 7 (b = 5 × 2^64 + 7)
// ---------
// 3 MAX (diff = 3 × 2^64 + 2^64 - 1)
let (a1, a0): (usize, usize) = (9, 6);
let (b1, b0): (usize, usize) = (5, 7);
let borrow0 = false;
let (diff0, borrow1) = a0.borrowing_sub(b0, borrow0);
assert_eq!(borrow1, true);
let (diff1, borrow2) = a1.borrowing_sub(b1, borrow1);
assert_eq!(borrow2, false);
assert_eq!((diff1, diff0), (3, usize::MAX));
```

Run1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool)

Calculates the multiplication of `self`

and `rhs`

.

Returns a tuple of the multiplication along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

##### §Examples

Basic usage:

Please note that this example is shared between integer types.
Which explains why `u32`

is used here.

```
assert_eq!(5u32.overflowing_mul(2), (10, false));
assert_eq!(1_000_000_000u32.overflowing_mul(10), (1410065408, true));
```

Run1.7.0 (const: 1.52.0) · source#### pub const fn overflowing_div(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_div(self, rhs: Self) -> (Self, bool)

Calculates the divisor when `self`

is divided by `rhs`

.

Returns a tuple of the divisor along with a boolean indicating
whether an arithmetic overflow would occur. Note that for unsigned
integers overflow never occurs, so the second value is always
`false`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage

`assert_eq!(5usize.overflowing_div(2), (2, false));`

Run1.38.0 (const: 1.52.0) · source#### pub const fn overflowing_div_euclid(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_div_euclid(self, rhs: Self) -> (Self, bool)

Calculates the quotient of Euclidean division `self.div_euclid(rhs)`

.

Returns a tuple of the divisor along with a boolean indicating
whether an arithmetic overflow would occur. Note that for unsigned
integers overflow never occurs, so the second value is always
`false`

.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self.overflowing_div(rhs)`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage

`assert_eq!(5usize.overflowing_div_euclid(2), (2, false));`

Run1.7.0 (const: 1.52.0) · source#### pub const fn overflowing_rem(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_rem(self, rhs: Self) -> (Self, bool)

Calculates the remainder when `self`

is divided by `rhs`

.

Returns a tuple of the remainder after dividing along with a boolean
indicating whether an arithmetic overflow would occur. Note that for
unsigned integers overflow never occurs, so the second value is
always `false`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage

`assert_eq!(5usize.overflowing_rem(2), (1, false));`

Run1.38.0 (const: 1.52.0) · source#### pub const fn overflowing_rem_euclid(self, rhs: Self) -> (Self, bool)

#### pub const fn overflowing_rem_euclid(self, rhs: Self) -> (Self, bool)

Calculates the remainder `self.rem_euclid(rhs)`

as if by Euclidean division.

Returns a tuple of the modulo after dividing along with a boolean
indicating whether an arithmetic overflow would occur. Note that for
unsigned integers overflow never occurs, so the second value is
always `false`

.
Since, for the positive integers, all common
definitions of division are equal, this operation
is exactly equal to `self.overflowing_rem(rhs)`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage

`assert_eq!(5usize.overflowing_rem_euclid(2), (1, false));`

Run1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_neg(self) -> (Self, bool)

#### pub const fn overflowing_neg(self) -> (Self, bool)

Negates self in an overflowing fashion.

Returns `!self + 1`

using wrapping operations to return the value
that represents the negation of this unsigned value. Note that for
positive unsigned values overflow always occurs, but negating 0 does
not overflow.

##### §Examples

Basic usage

```
assert_eq!(0usize.overflowing_neg(), (0, false));
assert_eq!(2usize.overflowing_neg(), (-2i32 as usize, true));
```

Run1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_shl(self, rhs: u32) -> (Self, bool)

#### pub const fn overflowing_shl(self, rhs: u32) -> (Self, bool)

Shifts self left by `rhs`

bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

##### §Examples

Basic usage

```
assert_eq!(0x1usize.overflowing_shl(4), (0x10, false));
assert_eq!(0x1usize.overflowing_shl(132), (0x10, true));
```

Run1.7.0 (const: 1.32.0) · source#### pub const fn overflowing_shr(self, rhs: u32) -> (Self, bool)

#### pub const fn overflowing_shr(self, rhs: u32) -> (Self, bool)

Shifts self right by `rhs`

bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

##### §Examples

Basic usage

```
assert_eq!(0x10usize.overflowing_shr(4), (0x1, false));
assert_eq!(0x10usize.overflowing_shr(132), (0x1, true));
```

Run1.34.0 (const: 1.50.0) · source#### pub const fn overflowing_pow(self, exp: u32) -> (Self, bool)

#### pub const fn overflowing_pow(self, exp: u32) -> (Self, bool)

const: unstable · source#### pub fn isqrt(self) -> Self

🔬This is a nightly-only experimental API. (`isqrt`

#116226)

#### pub fn isqrt(self) -> Self

`isqrt`

#116226)1.38.0 (const: 1.52.0) · source#### pub const fn div_euclid(self, rhs: Self) -> Self

#### pub const fn div_euclid(self, rhs: Self) -> Self

1.38.0 (const: 1.52.0) · source#### pub const fn rem_euclid(self, rhs: Self) -> Self

#### pub const fn rem_euclid(self, rhs: Self) -> Self

Calculates the least remainder of `self (mod rhs)`

.

Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to `self % rhs`

.

##### §Panics

This function will panic if `rhs`

is 0.

##### §Examples

Basic usage:

`assert_eq!(7usize.rem_euclid(4), 3); // or any other integer type`

Runsource#### pub const fn div_floor(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (`int_roundings`

#88581)

#### pub const fn div_floor(self, rhs: Self) -> Self

`int_roundings`

#88581)1.73.0 (const: 1.73.0) · source#### pub const fn next_multiple_of(self, rhs: Self) -> Self

#### pub const fn next_multiple_of(self, rhs: Self) -> Self

Calculates the smallest value greater than or equal to `self`

that
is a multiple of `rhs`

.

##### §Panics

This function will panic if `rhs`

is zero.

###### §Overflow behavior

On overflow, this function will panic if overflow checks are enabled (default in debug mode) and wrap if overflow checks are disabled (default in release mode).

##### §Examples

Basic usage:

```
assert_eq!(16_usize.next_multiple_of(8), 16);
assert_eq!(23_usize.next_multiple_of(8), 24);
```

Run1.73.0 (const: 1.73.0) · source#### pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>

#### pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>

Calculates the smallest value greater than or equal to `self`

that
is a multiple of `rhs`

. Returns `None`

if `rhs`

is zero or the
operation would result in overflow.

##### §Examples

Basic usage:

```
assert_eq!(16_usize.checked_next_multiple_of(8), Some(16));
assert_eq!(23_usize.checked_next_multiple_of(8), Some(24));
assert_eq!(1_usize.checked_next_multiple_of(0), None);
assert_eq!(usize::MAX.checked_next_multiple_of(2), None);
```

Runconst: 1.32.0 · source#### pub const fn is_power_of_two(self) -> bool

#### pub const fn is_power_of_two(self) -> bool

const: 1.50.0 · source#### pub const fn next_power_of_two(self) -> Self

#### pub const fn next_power_of_two(self) -> Self

Returns the smallest power of two greater than or equal to `self`

.

When return value overflows (i.e., `self > (1 << (N-1))`

for type
`uN`

), it panics in debug mode and the return value is wrapped to 0 in
release mode (the only situation in which method can return 0).

##### §Examples

Basic usage:

```
assert_eq!(2usize.next_power_of_two(), 2);
assert_eq!(3usize.next_power_of_two(), 4);
```

Runconst: 1.50.0 · source#### pub const fn checked_next_power_of_two(self) -> Option<Self>

#### pub const fn checked_next_power_of_two(self) -> Option<Self>

Returns the smallest power of two greater than or equal to `n`

. If
the next power of two is greater than the type’s maximum value,
`None`

is returned, otherwise the power of two is wrapped in `Some`

.

##### §Examples

Basic usage:

```
assert_eq!(2usize.checked_next_power_of_two(), Some(2));
assert_eq!(3usize.checked_next_power_of_two(), Some(4));
assert_eq!(usize::MAX.checked_next_power_of_two(), None);
```

Runconst: unstable · source#### pub fn wrapping_next_power_of_two(self) -> Self

🔬This is a nightly-only experimental API. (`wrapping_next_power_of_two`

#32463)

#### pub fn wrapping_next_power_of_two(self) -> Self

`wrapping_next_power_of_two`

#32463)Returns the smallest power of two greater than or equal to `n`

. If
the next power of two is greater than the type’s maximum value,
the return value is wrapped to `0`

.

##### §Examples

Basic usage:

```
#![feature(wrapping_next_power_of_two)]
assert_eq!(2usize.wrapping_next_power_of_two(), 2);
assert_eq!(3usize.wrapping_next_power_of_two(), 4);
assert_eq!(usize::MAX.wrapping_next_power_of_two(), 0);
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn to_be_bytes(self) -> [u8; 8]

#### pub const fn to_be_bytes(self) -> [u8; 8]

Return the memory representation of this integer as a byte array in big-endian (network) byte order.

**Note**: This function returns an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let bytes = 0x1234567890123456usize.to_be_bytes();
assert_eq!(bytes, [0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56]);
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn to_le_bytes(self) -> [u8; 8]

#### pub const fn to_le_bytes(self) -> [u8; 8]

Return the memory representation of this integer as a byte array in little-endian byte order.

**Note**: This function returns an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let bytes = 0x1234567890123456usize.to_le_bytes();
assert_eq!(bytes, [0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]);
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn to_ne_bytes(self) -> [u8; 8]

#### pub const fn to_ne_bytes(self) -> [u8; 8]

Return the memory representation of this integer as a byte array in native byte order.

As the target platform’s native endianness is used, portable code
should use `to_be_bytes`

or `to_le_bytes`

, as appropriate,
instead.

**Note**: This function returns an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let bytes = 0x1234567890123456usize.to_ne_bytes();
assert_eq!(
bytes,
if cfg!(target_endian = "big") {
[0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56]
} else {
[0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]
}
);
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn from_be_bytes(bytes: [u8; 8]) -> Self

#### pub const fn from_be_bytes(bytes: [u8; 8]) -> Self

Create a native endian integer value from its representation as a byte array in big endian.

**Note**: This function takes an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let value = usize::from_be_bytes([0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56]);
assert_eq!(value, 0x1234567890123456);
```

RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:

```
fn read_be_usize(input: &mut &[u8]) -> usize {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<usize>());
*input = rest;
usize::from_be_bytes(int_bytes.try_into().unwrap())
}
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn from_le_bytes(bytes: [u8; 8]) -> Self

#### pub const fn from_le_bytes(bytes: [u8; 8]) -> Self

Create a native endian integer value from its representation as a byte array in little endian.

**Note**: This function takes an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let value = usize::from_le_bytes([0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]);
assert_eq!(value, 0x1234567890123456);
```

RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:

```
fn read_le_usize(input: &mut &[u8]) -> usize {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<usize>());
*input = rest;
usize::from_le_bytes(int_bytes.try_into().unwrap())
}
```

Run1.32.0 (const: 1.44.0) · source#### pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self

#### pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self

Create a native endian integer value from its memory representation as a byte array in native endianness.

As the target platform’s native endianness is used, portable code
likely wants to use `from_be_bytes`

or `from_le_bytes`

, as
appropriate instead.

**Note**: This function takes an array of length 2, 4 or 8 bytes
depending on the target pointer size.

##### §Examples

```
let value = usize::from_ne_bytes(if cfg!(target_endian = "big") {
[0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56]
} else {
[0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]
});
assert_eq!(value, 0x1234567890123456);
```

RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:

```
fn read_ne_usize(input: &mut &[u8]) -> usize {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<usize>());
*input = rest;
usize::from_ne_bytes(int_bytes.try_into().unwrap())
}
```

Runconst: 1.32.0 · source#### pub const fn min_value() -> Self

👎Deprecating in a future version: replaced by the `MIN`

associated constant on this type

#### pub const fn min_value() -> Self

`MIN`

associated constant on this typeNew code should prefer to use
`usize::MIN`

instead.

Returns the smallest value that can be represented by this integer type.

const: 1.32.0 · source#### pub const fn max_value() -> Self

👎Deprecating in a future version: replaced by the `MAX`

associated constant on this type

#### pub const fn max_value() -> Self

`MAX`

associated constant on this typeNew code should prefer to use
`usize::MAX`

instead.

Returns the largest value that can be represented by this integer type.

const: unstable · source#### pub fn widening_mul(self, rhs: Self) -> (Self, Self)

🔬This is a nightly-only experimental API. (`bigint_helper_methods`

#85532)

#### pub fn widening_mul(self, rhs: Self) -> (Self, Self)

`bigint_helper_methods`

#85532)Calculates the complete product `self * rhs`

without the possibility to overflow.

This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.

If you also need to add a carry to the wide result, then you want
`Self::carrying_mul`

instead.

##### §Examples

Basic usage:

Please note that this example is shared between integer types.
Which explains why `u32`

is used here.

```
#![feature(bigint_helper_methods)]
assert_eq!(5u32.widening_mul(2), (10, 0));
assert_eq!(1_000_000_000u32.widening_mul(10), (1410065408, 2));
```

Runconst: unstable · source#### pub fn carrying_mul(self, rhs: Self, carry: Self) -> (Self, Self)

🔬This is a nightly-only experimental API. (`bigint_helper_methods`

#85532)

#### pub fn carrying_mul(self, rhs: Self, carry: Self) -> (Self, Self)

`bigint_helper_methods`

#85532)Calculates the “full multiplication” `self * rhs + carry`

without the possibility to overflow.

This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.

Performs “long multiplication” which takes in an extra amount to add, and may return an additional amount of overflow. This allows for chaining together multiple multiplications to create “big integers” which represent larger values.

If you don’t need the `carry`

, then you can use `Self::widening_mul`

instead.

##### §Examples

Basic usage:

Please note that this example is shared between integer types.
Which explains why `u32`

is used here.

```
#![feature(bigint_helper_methods)]
assert_eq!(5u32.carrying_mul(2, 0), (10, 0));
assert_eq!(5u32.carrying_mul(2, 10), (20, 0));
assert_eq!(1_000_000_000u32.carrying_mul(10, 0), (1410065408, 2));
assert_eq!(1_000_000_000u32.carrying_mul(10, 10), (1410065418, 2));
assert_eq!(usize::MAX.carrying_mul(usize::MAX, usize::MAX), (0, usize::MAX));
```

RunThis is the core operation needed for scalar multiplication when implementing it for wider-than-native types.

```
#![feature(bigint_helper_methods)]
fn scalar_mul_eq(little_endian_digits: &mut Vec<u16>, multiplicand: u16) {
let mut carry = 0;
for d in little_endian_digits.iter_mut() {
(*d, carry) = d.carrying_mul(multiplicand, carry);
}
if carry != 0 {
little_endian_digits.push(carry);
}
}
let mut v = vec![10, 20];
scalar_mul_eq(&mut v, 3);
assert_eq!(v, [30, 60]);
assert_eq!(0x87654321_u64 * 0xFEED, 0x86D3D159E38D);
let mut v = vec![0x4321, 0x8765];
scalar_mul_eq(&mut v, 0xFEED);
assert_eq!(v, [0xE38D, 0xD159, 0x86D3]);
```

RunIf `carry`

is zero, this is similar to `overflowing_mul`

,
except that it gives the value of the overflow instead of just whether one happened:

```
#![feature(bigint_helper_methods)]
let r = u8::carrying_mul(7, 13, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(7, 13));
let r = u8::carrying_mul(13, 42, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(13, 42));
```

RunThe value of the first field in the returned tuple matches what you’d get
by combining the `wrapping_mul`

and
`wrapping_add`

methods:

```
#![feature(bigint_helper_methods)]
assert_eq!(
789_u16.carrying_mul(456, 123).0,
789_u16.wrapping_mul(456).wrapping_add(123),
);
```

Runconst: unstable · source#### pub fn midpoint(self, rhs: usize) -> usize

🔬This is a nightly-only experimental API. (`num_midpoint`

#110840)

#### pub fn midpoint(self, rhs: usize) -> usize

`num_midpoint`

#110840)Calculates the middle point of `self`

and `rhs`

.

`midpoint(a, b)`

is `(a + b) >> 1`

as if it were performed in a
sufficiently-large signed integral type. This implies that the result is
always rounded towards negative infinity and that no overflow will ever occur.

##### §Examples

```
#![feature(num_midpoint)]
assert_eq!(0usize.midpoint(4), 2);
assert_eq!(1usize.midpoint(4), 2);
```

Run## Trait Implementations§

1.22.0 · source§### impl AddAssign<&usize> for Saturating<usize>

### impl AddAssign<&usize> for Saturating<usize>

source§#### fn add_assign(&mut self, other: &usize)

#### fn add_assign(&mut self, other: &usize)

`+=`

operation. Read more1.22.0 · source§### impl AddAssign<&usize> for Wrapping<usize>

### impl AddAssign<&usize> for Wrapping<usize>

source§#### fn add_assign(&mut self, other: &usize)

#### fn add_assign(&mut self, other: &usize)

`+=`

operation. Read more1.22.0 · source§### impl AddAssign<&usize> for usize

### impl AddAssign<&usize> for usize

source§#### fn add_assign(&mut self, other: &usize)

#### fn add_assign(&mut self, other: &usize)

`+=`

operation. Read more1.74.0 · source§### impl AddAssign<usize> for Saturating<usize>

### impl AddAssign<usize> for Saturating<usize>

source§#### fn add_assign(&mut self, other: usize)

#### fn add_assign(&mut self, other: usize)

`+=`

operation. Read more1.60.0 · source§### impl AddAssign<usize> for Wrapping<usize>

### impl AddAssign<usize> for Wrapping<usize>

source§#### fn add_assign(&mut self, other: usize)

#### fn add_assign(&mut self, other: usize)

`+=`

operation. Read more1.8.0 · source§### impl AddAssign for usize

### impl AddAssign for usize

source§#### fn add_assign(&mut self, other: usize)

#### fn add_assign(&mut self, other: usize)

`+=`

operation. Read more1.22.0 · source§### impl BitAndAssign<&usize> for Saturating<usize>

### impl BitAndAssign<&usize> for Saturating<usize>

source§#### fn bitand_assign(&mut self, other: &usize)

#### fn bitand_assign(&mut self, other: &usize)

`&=`

operation. Read more1.22.0 · source§### impl BitAndAssign<&usize> for Wrapping<usize>

### impl BitAndAssign<&usize> for Wrapping<usize>

source§#### fn bitand_assign(&mut self, other: &usize)

#### fn bitand_assign(&mut self, other: &usize)

`&=`

operation. Read more1.22.0 · source§### impl BitAndAssign<&usize> for usize

### impl BitAndAssign<&usize> for usize

source§#### fn bitand_assign(&mut self, other: &usize)

#### fn bitand_assign(&mut self, other: &usize)

`&=`

operation. Read more1.74.0 · source§### impl BitAndAssign<usize> for Saturating<usize>

### impl BitAndAssign<usize> for Saturating<usize>

source§#### fn bitand_assign(&mut self, other: usize)

#### fn bitand_assign(&mut self, other: usize)

`&=`

operation. Read more1.60.0 · source§### impl BitAndAssign<usize> for Wrapping<usize>

### impl BitAndAssign<usize> for Wrapping<usize>

source§#### fn bitand_assign(&mut self, other: usize)

#### fn bitand_assign(&mut self, other: usize)

`&=`

operation. Read more1.8.0 · source§### impl BitAndAssign for usize

### impl BitAndAssign for usize

source§#### fn bitand_assign(&mut self, other: usize)

#### fn bitand_assign(&mut self, other: usize)

`&=`

operation. Read more1.22.0 · source§### impl BitOrAssign<&usize> for Saturating<usize>

### impl BitOrAssign<&usize> for Saturating<usize>

source§#### fn bitor_assign(&mut self, other: &usize)

#### fn bitor_assign(&mut self, other: &usize)

`|=`

operation. Read more1.22.0 · source§### impl BitOrAssign<&usize> for Wrapping<usize>

### impl BitOrAssign<&usize> for Wrapping<usize>

source§#### fn bitor_assign(&mut self, other: &usize)

#### fn bitor_assign(&mut self, other: &usize)

`|=`

operation. Read more1.22.0 · source§### impl BitOrAssign<&usize> for usize

### impl BitOrAssign<&usize> for usize

source§#### fn bitor_assign(&mut self, other: &usize)

#### fn bitor_assign(&mut self, other: &usize)

`|=`

operation. Read more1.74.0 · source§### impl BitOrAssign<usize> for Saturating<usize>

### impl BitOrAssign<usize> for Saturating<usize>

source§#### fn bitor_assign(&mut self, other: usize)

#### fn bitor_assign(&mut self, other: usize)

`|=`

operation. Read more1.60.0 · source§### impl BitOrAssign<usize> for Wrapping<usize>

### impl BitOrAssign<usize> for Wrapping<usize>

source§#### fn bitor_assign(&mut self, other: usize)

#### fn bitor_assign(&mut self, other: usize)

`|=`

operation. Read more1.8.0 · source§### impl BitOrAssign for usize

### impl BitOrAssign for usize

source§#### fn bitor_assign(&mut self, other: usize)

#### fn bitor_assign(&mut self, other: usize)

`|=`

operation. Read more1.22.0 · source§### impl BitXorAssign<&usize> for Saturating<usize>

### impl BitXorAssign<&usize> for Saturating<usize>

source§#### fn bitxor_assign(&mut self, other: &usize)

#### fn bitxor_assign(&mut self, other: &usize)

`^=`

operation. Read more1.22.0 · source§### impl BitXorAssign<&usize> for Wrapping<usize>

### impl BitXorAssign<&usize> for Wrapping<usize>

source§#### fn bitxor_assign(&mut self, other: &usize)

#### fn bitxor_assign(&mut self, other: &usize)

`^=`

operation. Read more1.22.0 · source§### impl BitXorAssign<&usize> for usize

### impl BitXorAssign<&usize> for usize

source§#### fn bitxor_assign(&mut self, other: &usize)

#### fn bitxor_assign(&mut self, other: &usize)

`^=`

operation. Read more1.74.0 · source§### impl BitXorAssign<usize> for Saturating<usize>

### impl BitXorAssign<usize> for Saturating<usize>

source§#### fn bitxor_assign(&mut self, other: usize)

#### fn bitxor_assign(&mut self, other: usize)

`^=`

operation. Read more1.60.0 · source§### impl BitXorAssign<usize> for Wrapping<usize>

### impl BitXorAssign<usize> for Wrapping<usize>

source§#### fn bitxor_assign(&mut self, other: usize)

#### fn bitxor_assign(&mut self, other: usize)

`^=`

operation. Read more1.8.0 · source§### impl BitXorAssign for usize

### impl BitXorAssign for usize

source§#### fn bitxor_assign(&mut self, other: usize)

#### fn bitxor_assign(&mut self, other: usize)

`^=`

operation. Read moresource§### impl Div for usize

### impl Div for usize

This operation rounds towards zero, truncating any fractional part of the exact result.

#### §Panics

This operation will panic if `other == 0`

.

1.22.0 · source§### impl DivAssign<&usize> for Saturating<usize>

### impl DivAssign<&usize> for Saturating<usize>

source§#### fn div_assign(&mut self, other: &usize)

#### fn div_assign(&mut self, other: &usize)

`/=`

operation. Read more1.22.0 · source§### impl DivAssign<&usize> for Wrapping<usize>

### impl DivAssign<&usize> for Wrapping<usize>

source§#### fn div_assign(&mut self, other: &usize)

#### fn div_assign(&mut self, other: &usize)

`/=`

operation. Read more1.22.0 · source§### impl DivAssign<&usize> for usize

### impl DivAssign<&usize> for usize

source§#### fn div_assign(&mut self, other: &usize)

#### fn div_assign(&mut self, other: &usize)

`/=`

operation. Read more1.74.0 · source§### impl DivAssign<usize> for Saturating<usize>

### impl DivAssign<usize> for Saturating<usize>

source§#### fn div_assign(&mut self, other: usize)

#### fn div_assign(&mut self, other: usize)

`/=`

operation. Read more1.60.0 · source§### impl DivAssign<usize> for Wrapping<usize>

### impl DivAssign<usize> for Wrapping<usize>

source§#### fn div_assign(&mut self, other: usize)

#### fn div_assign(&mut self, other: usize)

`/=`

operation. Read more1.8.0 · source§### impl DivAssign for usize

### impl DivAssign for usize

source§#### fn div_assign(&mut self, other: usize)

#### fn div_assign(&mut self, other: usize)

`/=`

operation. Read more1.23.0 · source§### impl From<usize> for AtomicUsize

### impl From<usize> for AtomicUsize

source§### impl FromStr for usize

### impl FromStr for usize

§#### type Err = ParseIntError

#### type Err = ParseIntError

1.22.0 · source§### impl MulAssign<&usize> for Saturating<usize>

### impl MulAssign<&usize> for Saturating<usize>

source§#### fn mul_assign(&mut self, other: &usize)

#### fn mul_assign(&mut self, other: &usize)

`*=`

operation. Read more1.22.0 · source§### impl MulAssign<&usize> for Wrapping<usize>

### impl MulAssign<&usize> for Wrapping<usize>

source§#### fn mul_assign(&mut self, other: &usize)

#### fn mul_assign(&mut self, other: &usize)

`*=`

operation. Read more1.22.0 · source§### impl MulAssign<&usize> for usize

### impl MulAssign<&usize> for usize

source§#### fn mul_assign(&mut self, other: &usize)

#### fn mul_assign(&mut self, other: &usize)

`*=`

operation. Read more1.74.0 · source§### impl MulAssign<usize> for Saturating<usize>

### impl MulAssign<usize> for Saturating<usize>

source§#### fn mul_assign(&mut self, other: usize)

#### fn mul_assign(&mut self, other: usize)

`*=`

operation. Read more1.60.0 · source§### impl MulAssign<usize> for Wrapping<usize>

### impl MulAssign<usize> for Wrapping<usize>

source§#### fn mul_assign(&mut self, other: usize)

#### fn mul_assign(&mut self, other: usize)

`*=`

operation. Read more1.8.0 · source§### impl MulAssign for usize

### impl MulAssign for usize

source§#### fn mul_assign(&mut self, other: usize)

#### fn mul_assign(&mut self, other: usize)

`*=`

operation. Read moresource§### impl Ord for usize

### impl Ord for usize

const: unstable · source§### impl PartialEq for usize

### impl PartialEq for usize

source§### impl PartialOrd for usize

### impl PartialOrd for usize

source§#### fn le(&self, other: &usize) -> bool

#### fn le(&self, other: &usize) -> bool

`self`

and `other`

) and is used by the `<=`

operator. Read moresource§### impl Rem for usize

### impl Rem for usize

This operation satisfies `n % d == n - (n / d) * d`

. The
result has the same sign as the left operand.

#### §Panics

This operation will panic if `other == 0`

.

1.22.0 · source§### impl RemAssign<&usize> for Saturating<usize>

### impl RemAssign<&usize> for Saturating<usize>

source§#### fn rem_assign(&mut self, other: &usize)

#### fn rem_assign(&mut self, other: &usize)

`%=`

operation. Read more1.22.0 · source§### impl RemAssign<&usize> for Wrapping<usize>

### impl RemAssign<&usize> for Wrapping<usize>

source§#### fn rem_assign(&mut self, other: &usize)

#### fn rem_assign(&mut self, other: &usize)

`%=`

operation. Read more1.22.0 · source§### impl RemAssign<&usize> for usize

### impl RemAssign<&usize> for usize

source§#### fn rem_assign(&mut self, other: &usize)

#### fn rem_assign(&mut self, other: &usize)

`%=`

operation. Read more1.74.0 · source§### impl RemAssign<usize> for Saturating<usize>

### impl RemAssign<usize> for Saturating<usize>

source§#### fn rem_assign(&mut self, other: usize)

#### fn rem_assign(&mut self, other: usize)

`%=`

operation. Read more1.60.0 · source§### impl RemAssign<usize> for Wrapping<usize>

### impl RemAssign<usize> for Wrapping<usize>

source§#### fn rem_assign(&mut self, other: usize)

#### fn rem_assign(&mut self, other: usize)

`%=`

operation. Read more1.8.0 · source§### impl RemAssign for usize

### impl RemAssign for usize

source§#### fn rem_assign(&mut self, other: usize)

#### fn rem_assign(&mut self, other: usize)

`%=`

operation. Read moresource§### impl<'lhs, const N: usize> Shl<&usize> for &'lhs Simd<usize, N>where
LaneCount<N>: SupportedLaneCount,

### impl<'lhs, const N: usize> Shl<&usize> for &'lhs Simd<usize, N>where
LaneCount<N>: SupportedLaneCount,

source§### impl<'lhs, const N: usize> Shl<usize> for &'lhs Simd<usize, N>where
LaneCount<N>: SupportedLaneCount,

### impl<'lhs, const N: usize> Shl<usize> for &'lhs Simd<usize, N>where
LaneCount<N>: SupportedLaneCount,

1.22.0 · source§### impl ShlAssign<&i128> for usize

### impl ShlAssign<&i128> for usize

source§#### fn shl_assign(&mut self, other: &i128)

#### fn shl_assign(&mut self, other: &i128)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&i16> for usize

### impl ShlAssign<&i16> for usize

source§#### fn shl_assign(&mut self, other: &i16)

#### fn shl_assign(&mut self, other: &i16)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&i32> for usize

### impl ShlAssign<&i32> for usize

source§#### fn shl_assign(&mut self, other: &i32)

#### fn shl_assign(&mut self, other: &i32)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&i64> for usize

### impl ShlAssign<&i64> for usize

source§#### fn shl_assign(&mut self, other: &i64)

#### fn shl_assign(&mut self, other: &i64)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&i8> for usize

### impl ShlAssign<&i8> for usize

source§#### fn shl_assign(&mut self, other: &i8)

#### fn shl_assign(&mut self, other: &i8)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&isize> for usize

### impl ShlAssign<&isize> for usize

source§#### fn shl_assign(&mut self, other: &isize)

#### fn shl_assign(&mut self, other: &isize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&u128> for usize

### impl ShlAssign<&u128> for usize

source§#### fn shl_assign(&mut self, other: &u128)

#### fn shl_assign(&mut self, other: &u128)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&u16> for usize

### impl ShlAssign<&u16> for usize

source§#### fn shl_assign(&mut self, other: &u16)

#### fn shl_assign(&mut self, other: &u16)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&u32> for usize

### impl ShlAssign<&u32> for usize

source§#### fn shl_assign(&mut self, other: &u32)

#### fn shl_assign(&mut self, other: &u32)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&u64> for usize

### impl ShlAssign<&u64> for usize

source§#### fn shl_assign(&mut self, other: &u64)

#### fn shl_assign(&mut self, other: &u64)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&u8> for usize

### impl ShlAssign<&u8> for usize

source§#### fn shl_assign(&mut self, other: &u8)

#### fn shl_assign(&mut self, other: &u8)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<i128>

### impl ShlAssign<&usize> for Wrapping<i128>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<i16>

### impl ShlAssign<&usize> for Wrapping<i16>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<i32>

### impl ShlAssign<&usize> for Wrapping<i32>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<i64>

### impl ShlAssign<&usize> for Wrapping<i64>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<i8>

### impl ShlAssign<&usize> for Wrapping<i8>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<isize>

### impl ShlAssign<&usize> for Wrapping<isize>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<u128>

### impl ShlAssign<&usize> for Wrapping<u128>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<u16>

### impl ShlAssign<&usize> for Wrapping<u16>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<u32>

### impl ShlAssign<&usize> for Wrapping<u32>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<u64>

### impl ShlAssign<&usize> for Wrapping<u64>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<u8>

### impl ShlAssign<&usize> for Wrapping<u8>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for Wrapping<usize>

### impl ShlAssign<&usize> for Wrapping<usize>

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for i128

### impl ShlAssign<&usize> for i128

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for i16

### impl ShlAssign<&usize> for i16

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for i32

### impl ShlAssign<&usize> for i32

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for i64

### impl ShlAssign<&usize> for i64

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for i8

### impl ShlAssign<&usize> for i8

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for isize

### impl ShlAssign<&usize> for isize

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for u128

### impl ShlAssign<&usize> for u128

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for u16

### impl ShlAssign<&usize> for u16

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for u32

### impl ShlAssign<&usize> for u32

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for u64

### impl ShlAssign<&usize> for u64

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for u8

### impl ShlAssign<&usize> for u8

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.22.0 · source§### impl ShlAssign<&usize> for usize

### impl ShlAssign<&usize> for usize

source§#### fn shl_assign(&mut self, other: &usize)

#### fn shl_assign(&mut self, other: &usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<i128> for usize

### impl ShlAssign<i128> for usize

source§#### fn shl_assign(&mut self, other: i128)

#### fn shl_assign(&mut self, other: i128)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<i16> for usize

### impl ShlAssign<i16> for usize

source§#### fn shl_assign(&mut self, other: i16)

#### fn shl_assign(&mut self, other: i16)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<i32> for usize

### impl ShlAssign<i32> for usize

source§#### fn shl_assign(&mut self, other: i32)

#### fn shl_assign(&mut self, other: i32)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<i64> for usize

### impl ShlAssign<i64> for usize

source§#### fn shl_assign(&mut self, other: i64)

#### fn shl_assign(&mut self, other: i64)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<i8> for usize

### impl ShlAssign<i8> for usize

source§#### fn shl_assign(&mut self, other: i8)

#### fn shl_assign(&mut self, other: i8)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<isize> for usize

### impl ShlAssign<isize> for usize

source§#### fn shl_assign(&mut self, other: isize)

#### fn shl_assign(&mut self, other: isize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<u128> for usize

### impl ShlAssign<u128> for usize

source§#### fn shl_assign(&mut self, other: u128)

#### fn shl_assign(&mut self, other: u128)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<u16> for usize

### impl ShlAssign<u16> for usize

source§#### fn shl_assign(&mut self, other: u16)

#### fn shl_assign(&mut self, other: u16)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<u32> for usize

### impl ShlAssign<u32> for usize

source§#### fn shl_assign(&mut self, other: u32)

#### fn shl_assign(&mut self, other: u32)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<u64> for usize

### impl ShlAssign<u64> for usize

source§#### fn shl_assign(&mut self, other: u64)

#### fn shl_assign(&mut self, other: u64)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<u8> for usize

### impl ShlAssign<u8> for usize

source§#### fn shl_assign(&mut self, other: u8)

#### fn shl_assign(&mut self, other: u8)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<i128>

### impl ShlAssign<usize> for Wrapping<i128>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<i16>

### impl ShlAssign<usize> for Wrapping<i16>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<i32>

### impl ShlAssign<usize> for Wrapping<i32>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<i64>

### impl ShlAssign<usize> for Wrapping<i64>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<i8>

### impl ShlAssign<usize> for Wrapping<i8>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<isize>

### impl ShlAssign<usize> for Wrapping<isize>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<u128>

### impl ShlAssign<usize> for Wrapping<u128>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<u16>

### impl ShlAssign<usize> for Wrapping<u16>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<u32>

### impl ShlAssign<usize> for Wrapping<u32>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<u64>

### impl ShlAssign<usize> for Wrapping<u64>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<u8>

### impl ShlAssign<usize> for Wrapping<u8>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for Wrapping<usize>

### impl ShlAssign<usize> for Wrapping<usize>

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for i128

### impl ShlAssign<usize> for i128

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for i16

### impl ShlAssign<usize> for i16

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for i32

### impl ShlAssign<usize> for i32

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for i64

### impl ShlAssign<usize> for i64

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for i8

### impl ShlAssign<usize> for i8

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for isize

### impl ShlAssign<usize> for isize

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for u128

### impl ShlAssign<usize> for u128

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for u16

### impl ShlAssign<usize> for u16

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for u32

### impl ShlAssign<usize> for u32

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for u64

### impl ShlAssign<usize> for u64

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign<usize> for u8

### impl ShlAssign<usize> for u8

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more1.8.0 · source§### impl ShlAssign for usize

### impl ShlAssign for usize

source§#### fn shl_assign(&mut self, other: usize)

#### fn shl_assign(&mut self, other: usize)

`<<=`

operation. Read more