#[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
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
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