Trait CastSigned 

pub trait CastSigned: Sized {
    type Signed;

    // Required method
    fn cast_signed(self) -> Self::Signed;
}

Reinterprets an unsigned integer’s bits as its signed counterpart.

For value-checked conversion to the signed counterpart, use CheckedCast / SaturatingCast / StrictCast with the signed target type.

Required Associated Types

type Signed

The signed counterpart type (e.g. i32 for u32).

Required Methods

fn cast_signed(self) -> Self::Signed

Returns the bit pattern of self reinterpreted as its signed counterpart (two’s complement: values above Signed::MAX become negative).

use const_num_traits::CastSigned;

assert_eq!(CastSigned::cast_signed(255u8), -1i8);
assert_eq!(CastSigned::cast_signed(127u8), 127i8);

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl CastSigned for u8

type Signed = i8

fn cast_signed(self) -> i8

impl CastSigned for u16

type Signed = i16

fn cast_signed(self) -> i16

impl CastSigned for u32

type Signed = i32

fn cast_signed(self) -> i32

impl CastSigned for u64

type Signed = i64

fn cast_signed(self) -> i64

impl CastSigned for u128

type Signed = i128

fn cast_signed(self) -> i128

impl CastSigned for usize

type Signed = isize

fn cast_signed(self) -> isize

Implementors