#[repr(transparent)]pub struct Wrapping<T>(pub T);
Expand description
Provides intentionally-wrapped arithmetic on T
.
Operations like +
on u32
values are intended to never overflow,
and in some debug configurations overflow is detected and results
in a panic. While most arithmetic falls into this category, some
code explicitly expects and relies upon modular arithmetic (e.g.,
hashing).
Wrapping arithmetic can be achieved either through methods like
wrapping_add
, or through the Wrapping<T>
type, which says that
all standard arithmetic operations on the underlying value are
intended to have wrapping semantics.
The underlying value can be retrieved through the .0
index of the
Wrapping
tuple.
Examples
use std::num::Wrapping;
let zero = Wrapping(0u32);
let one = Wrapping(1u32);
assert_eq!(u32::MAX, (zero - one).0);
Layout
Wrapping<T>
is guaranteed to have the same layout and ABI as T
.
Tuple Fields
0: T
Implementations
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<usize>>::MIN, Wrapping(usize::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<usize>>::MAX, Wrapping(usize::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<usize>>::BITS, usize::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100usize);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0usize).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000usize);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ausize);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<usize>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<usize>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ausize);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<usize>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<usize>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ausize);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ausize);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3usize).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u8>>::MIN, Wrapping(u8::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u8>>::MAX, Wrapping(u8::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u8>>::BITS, u8::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100u8);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0u8).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000u8);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au8);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<u8>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<u8>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au8);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<u8>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<u8>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au8);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au8);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3u8).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u16>>::MIN, Wrapping(u16::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u16>>::MAX, Wrapping(u16::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u16>>::BITS, u16::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100u16);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0u16).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000u16);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au16);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<u16>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<u16>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au16);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<u16>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<u16>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au16);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au16);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3u16).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u32>>::MIN, Wrapping(u32::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u32>>::MAX, Wrapping(u32::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u32>>::BITS, u32::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100u32);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0u32).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000u32);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au32);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<u32>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<u32>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au32);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<u32>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<u32>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au32);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au32);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3u32).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u64>>::MIN, Wrapping(u64::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u64>>::MAX, Wrapping(u64::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u64>>::BITS, u64::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100u64);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0u64).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000u64);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au64);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<u64>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<u64>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au64);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<u64>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<u64>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au64);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au64);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3u64).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u128>>::MIN, Wrapping(u128::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u128>>::MAX, Wrapping(u128::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<u128>>::BITS, u128::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100u128);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0u128).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000u128);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au128);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<u128>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<u128>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au128);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<u128>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<u128>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au128);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Au128);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3u128).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<isize>>::MIN, Wrapping(isize::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<isize>>::MAX, Wrapping(isize::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<isize>>::BITS, isize::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100isize);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0isize).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000isize);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Aisize);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<isize>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<isize>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Aisize);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<isize>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<isize>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Aisize);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Aisize);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3isize).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i8>>::MIN, Wrapping(i8::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i8>>::MAX, Wrapping(i8::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i8>>::BITS, i8::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100i8);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0i8).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000i8);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai8);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<i8>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<i8>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai8);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<i8>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<i8>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai8);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai8);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i16>>::MIN, Wrapping(i16::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i16>>::MAX, Wrapping(i16::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i16>>::BITS, i16::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100i16);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0i16).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000i16);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai16);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<i16>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<i16>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai16);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<i16>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<i16>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai16);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai16);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i16).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i32>>::MIN, Wrapping(i32::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i32>>::MAX, Wrapping(i32::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i32>>::BITS, i32::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100i32);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0i32).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000i32);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai32);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<i32>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<i32>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai32);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<i32>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<i32>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai32);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai32);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i32).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i64>>::MIN, Wrapping(i64::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i64>>::MAX, Wrapping(i64::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i64>>::BITS, i64::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100i64);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0i64).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000i64);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai64);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<i64>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<i64>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai64);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<i64>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<i64>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai64);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai64);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i64).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the smallest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i128>>::MIN, Wrapping(i128::MIN));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the largest value that can be represented by this integer type.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i128>>::MAX, Wrapping(i128::MAX));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the size of this integer type in bits.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(<Wrapping<i128>>::BITS, i128::BITS);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of ones in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b01001100i128);
assert_eq!(n.count_ones(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(!0i128).count_zeros(), 0);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of trailing zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0b0101000i128);
assert_eq!(n.trailing_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Shifts the bits to the left by a specified amount, n
,
wrapping the truncated bits to the end of the resulting
integer.
Please note this isn’t the same operation as the <<
shifting
operator!
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0x76543210FEDCBA99);
assert_eq!(n.rotate_left(32), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i64> = Wrapping(0x0123456789ABCDEF);
let m: Wrapping<i64> = Wrapping(-0xFEDCBA987654322);
assert_eq!(n.rotate_right(4), m);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Reverses the byte order of the integer.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n: Wrapping<i16> = Wrapping(0b0000000_01010101);
assert_eq!(n, Wrapping(85));
let m = n.swap_bytes();
assert_eq!(m, Wrapping(0b01010101_00000000));
assert_eq!(m, Wrapping(21760));
Reverses the bit pattern of the integer.
Examples
Please note that this example is shared between integer types.
Which explains why i16
is used here.
Basic usage:
use std::num::Wrapping;
let n = Wrapping(0b0000000_01010101i16);
assert_eq!(n, Wrapping(85));
let m = n.reverse_bits();
assert_eq!(m.0 as u16, 0b10101010_00000000);
assert_eq!(m, Wrapping(-22016));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai128);
if cfg!(target_endian = "big") {
assert_eq!(<Wrapping<i128>>::from_be(n), n)
} else {
assert_eq!(<Wrapping<i128>>::from_be(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)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:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai128);
if cfg!(target_endian = "little") {
assert_eq!(<Wrapping<i128>>::from_le(n), n)
} else {
assert_eq!(<Wrapping<i128>>::from_le(n), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to big endian from the target’s endianness.
On big endian this is a no-op. On little endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai128);
if cfg!(target_endian = "big") {
assert_eq!(n.to_be(), n)
} else {
assert_eq!(n.to_be(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Converts self
to little endian from the target’s endianness.
On little endian this is a no-op. On big endian the bytes are swapped.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(0x1Ai128);
if cfg!(target_endian = "little") {
assert_eq!(n.to_le(), n)
} else {
assert_eq!(n.to_le(), n.swap_bytes())
}
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Raises self to the power of exp
, using exponentiation by squaring.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i128).pow(4), Wrapping(81));
Results that are too large are wrapped:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(3i8).pow(5), Wrapping(-13));
assert_eq!(Wrapping(3i8).pow(6), Wrapping(-39));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(isize::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100isize).abs(), Wrapping(100));
assert_eq!(Wrapping(-100isize).abs(), Wrapping(100));
assert_eq!(Wrapping(isize::MIN).abs(), Wrapping(isize::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10isize).signum(), Wrapping(1));
assert_eq!(Wrapping(0isize).signum(), Wrapping(0));
assert_eq!(Wrapping(-10isize).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10isize).is_positive());
assert!(!Wrapping(-10isize).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10isize).is_negative());
assert!(!Wrapping(10isize).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(i8::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100i8).abs(), Wrapping(100));
assert_eq!(Wrapping(-100i8).abs(), Wrapping(100));
assert_eq!(Wrapping(i8::MIN).abs(), Wrapping(i8::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10i8).signum(), Wrapping(1));
assert_eq!(Wrapping(0i8).signum(), Wrapping(0));
assert_eq!(Wrapping(-10i8).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10i8).is_positive());
assert!(!Wrapping(-10i8).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10i8).is_negative());
assert!(!Wrapping(10i8).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(i16::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100i16).abs(), Wrapping(100));
assert_eq!(Wrapping(-100i16).abs(), Wrapping(100));
assert_eq!(Wrapping(i16::MIN).abs(), Wrapping(i16::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10i16).signum(), Wrapping(1));
assert_eq!(Wrapping(0i16).signum(), Wrapping(0));
assert_eq!(Wrapping(-10i16).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10i16).is_positive());
assert!(!Wrapping(-10i16).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10i16).is_negative());
assert!(!Wrapping(10i16).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(i32::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100i32).abs(), Wrapping(100));
assert_eq!(Wrapping(-100i32).abs(), Wrapping(100));
assert_eq!(Wrapping(i32::MIN).abs(), Wrapping(i32::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10i32).signum(), Wrapping(1));
assert_eq!(Wrapping(0i32).signum(), Wrapping(0));
assert_eq!(Wrapping(-10i32).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10i32).is_positive());
assert!(!Wrapping(-10i32).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10i32).is_negative());
assert!(!Wrapping(10i32).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(i64::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100i64).abs(), Wrapping(100));
assert_eq!(Wrapping(-100i64).abs(), Wrapping(100));
assert_eq!(Wrapping(i64::MIN).abs(), Wrapping(i64::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10i64).signum(), Wrapping(1));
assert_eq!(Wrapping(0i64).signum(), Wrapping(0));
assert_eq!(Wrapping(-10i64).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10i64).is_positive());
assert!(!Wrapping(-10i64).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10i64).is_negative());
assert!(!Wrapping(10i64).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(i128::MAX) >> 2;
assert_eq!(n.leading_zeros(), 3);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Computes the absolute value of self
, wrapping around at
the boundary of the type.
The only case where such wrapping can occur is when one takes the absolute value of the negative
minimal value for the type this is a positive value that is too large to represent in the type. In
such a case, this function returns MIN
itself.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(100i128).abs(), Wrapping(100));
assert_eq!(Wrapping(-100i128).abs(), Wrapping(100));
assert_eq!(Wrapping(i128::MIN).abs(), Wrapping(i128::MIN));
assert_eq!(Wrapping(-128i8).abs().0 as u8, 128u8);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns a number representing sign of self
.
0
if the number is zero1
if the number is positive-1
if the number is negative
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert_eq!(Wrapping(10i128).signum(), Wrapping(1));
assert_eq!(Wrapping(0i128).signum(), Wrapping(0));
assert_eq!(Wrapping(-10i128).signum(), Wrapping(-1));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is positive and false
if the number is zero or
negative.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(10i128).is_positive());
assert!(!Wrapping(-10i128).is_positive());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if self
is negative and false
if the number is zero or
positive.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(-10i128).is_negative());
assert!(!Wrapping(10i128).is_negative());
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(usize::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16usize).is_power_of_two());
assert!(!Wrapping(10usize).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2usize).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3usize).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(u8::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16u8).is_power_of_two());
assert!(!Wrapping(10u8).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2u8).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3u8).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(u16::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16u16).is_power_of_two());
assert!(!Wrapping(10u16).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2u16).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3u16).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(u32::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16u32).is_power_of_two());
assert!(!Wrapping(10u32).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2u32).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3u32).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(u64::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16u64).is_power_of_two());
assert!(!Wrapping(10u64).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2u64).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3u64).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns the number of leading zeros in the binary representation of self
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
let n = Wrapping(u128::MAX) >> 2;
assert_eq!(n.leading_zeros(), 2);
🔬 This is a nightly-only experimental API. (wrapping_int_impl
)
wrapping_int_impl
)Returns true
if and only if self == 2^k
for some k
.
Examples
Basic usage:
#![feature(wrapping_int_impl)]
use std::num::Wrapping;
assert!(Wrapping(16u128).is_power_of_two());
assert!(!Wrapping(10u128).is_power_of_two());
🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two
)
wrapping_next_power_of_two
)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
), overflows to 2^N = 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
use std::num::Wrapping;
assert_eq!(Wrapping(2u128).next_power_of_two(), Wrapping(2));
assert_eq!(Wrapping(3u128).next_power_of_two(), Wrapping(4));
assert_eq!(Wrapping(200_u8).next_power_of_two(), Wrapping(0));
Trait Implementations
pub fn deserialize<D>(
deserializer: D
) -> Result<Wrapping<T>, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
pub fn deserialize<D>(
deserializer: D
) -> Result<Wrapping<T>, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
pub fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,
pub fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,
Serialize this value into the given Serde serializer. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the <<=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Performs the >>=
operation. Read more
Auto Trait Implementations
impl<T> RefUnwindSafe for Wrapping<T> where
T: RefUnwindSafe,
impl<T> UnwindSafe for Wrapping<T> where
T: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
Causes self
to use its Binary
implementation when Debug
-formatted.
Causes self
to use its Display
implementation when
Debug
-formatted. Read more
Causes self
to use its LowerExp
implementation when
Debug
-formatted. Read more
Causes self
to use its LowerHex
implementation when
Debug
-formatted. Read more
Causes self
to use its Octal
implementation when Debug
-formatted.
Causes self
to use its Pointer
implementation when
Debug
-formatted. Read more
Causes self
to use its UpperExp
implementation when
Debug
-formatted. Read more
Causes self
to use its UpperHex
implementation when
Debug
-formatted. Read more
Pipes by value. This is generally the method you want to use. Read more
Borrows self
and passes that borrow into the pipe function. Read more
Mutably borrows self
and passes that borrow into the pipe function. Read more
Borrows self
, then passes self.borrow()
into the pipe function. Read more
Mutably borrows self
, then passes self.borrow_mut()
into the pipe
function. Read more
Borrows self
, then passes self.as_ref()
into the pipe function.
Mutably borrows self
, then passes self.as_mut()
into the pipe
function. Read more
Borrows self
, then passes self.deref()
into the pipe function.
fn pipe_as_ref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: AsRef<T>,
T: 'a,
R: 'a,
fn pipe_as_ref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: AsRef<T>,
T: 'a,
R: 'a,
Pipes a trait borrow into a function that cannot normally be called in suffix position. Read more
fn pipe_borrow<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: Borrow<T>,
T: 'a,
R: 'a,
fn pipe_borrow<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: Borrow<T>,
T: 'a,
R: 'a,
Pipes a trait borrow into a function that cannot normally be called in suffix position. Read more
fn pipe_deref<'a, R>(&'a self, func: impl FnOnce(&'a Self::Target) -> R) -> R where
Self: Deref,
R: 'a,
fn pipe_deref<'a, R>(&'a self, func: impl FnOnce(&'a Self::Target) -> R) -> R where
Self: Deref,
R: 'a,
Pipes a dereference into a function that cannot normally be called in suffix position. Read more
Pipes a reference into a function that cannot ordinarily be called in suffix position. Read more
Immutable access to the Borrow<B>
of a value. Read more
Mutable access to the BorrowMut<B>
of a value. Read more
Immutable access to the AsRef<R>
view of a value. Read more
Mutable access to the AsMut<R>
view of a value. Read more
Immutable access to the Deref::Target
of a value. Read more
Mutable access to the Deref::Target
of a value. Read more
Calls .tap()
only in debug builds, and is erased in release builds.
Calls .tap_mut()
only in debug builds, and is erased in release
builds. Read more
Calls .tap_borrow()
only in debug builds, and is erased in release
builds. Read more
Calls .tap_borrow_mut()
only in debug builds, and is erased in release
builds. Read more
Calls .tap_ref()
only in debug builds, and is erased in release
builds. Read more
Calls .tap_ref_mut()
only in debug builds, and is erased in release
builds. Read more
Calls .tap_deref()
only in debug builds, and is erased in release
builds. Read more
Provides immutable access to the reference for inspection.
Calls tap_ref
in debug builds, and does nothing in release builds.
Provides mutable access to the reference for modification.
Calls tap_ref_mut
in debug builds, and does nothing in release builds.
Provides immutable access to the borrow for inspection. Read more
Calls tap_borrow
in debug builds, and does nothing in release builds.
fn tap_borrow_mut<F, R>(self, func: F) -> Self where
Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
fn tap_borrow_mut<F, R>(self, func: F) -> Self where
Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
Provides mutable access to the borrow for modification.
Immutably dereferences self
for inspection.
fn tap_deref_dbg<F, R>(self, func: F) -> Self where
Self: Deref,
F: FnOnce(&Self::Target) -> R,
fn tap_deref_dbg<F, R>(self, func: F) -> Self where
Self: Deref,
F: FnOnce(&Self::Target) -> R,
Calls tap_deref
in debug builds, and does nothing in release builds.
fn tap_deref_mut<F, R>(self, func: F) -> Self where
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
fn tap_deref_mut<F, R>(self, func: F) -> Self where
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
Mutably dereferences self
for modification.