Struct core::num::NonZeroI8 1.34.0[−][src]
#[repr(transparent)]pub struct NonZeroI8(_);
Expand description
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroI8> is the same size as i8:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroI8>>(), size_of::<i8>());Run
Implementations
Creates a non-zero if the given value is not zero.
Returns the number of leading zeros in the binary representation of self.
On many architectures, this function can perform better than leading_zeros() on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroI8::new(-1i8).unwrap(); assert_eq!(n.leading_zeros(), 0);Run
Returns the number of trailing zeros in the binary representation
of self.
On many architectures, this function can perform better than trailing_zeros() on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroI8::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
Performs the |= operation. Read more
Performs the |= operation. 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
Attempts to convert NonZeroI128 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroI16 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroI32 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroI64 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroIsize to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroU128 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroU16 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroU32 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroU64 to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
Attempts to convert NonZeroUsize to NonZeroI8.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.