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Trait polkadot_service::runtime_traits::CheckedShl

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pub trait CheckedShl: Sized + Shl<u32, Output = Self> {
    // Required method
    fn checked_shl(&self, rhs: u32) -> Option<Self>;
}
Expand description

Performs a left shift that returns None on shifts larger than or equal to the type width.

Required Methods§

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fn checked_shl(&self, rhs: u32) -> Option<Self>

Checked shift left. Computes self << rhs, returning None if rhs is larger than or equal to the number of bits in self.

use num_traits::CheckedShl;

let x: u16 = 0x0001;

assert_eq!(CheckedShl::checked_shl(&x, 0),  Some(0x0001));
assert_eq!(CheckedShl::checked_shl(&x, 1),  Some(0x0002));
assert_eq!(CheckedShl::checked_shl(&x, 15), Some(0x8000));
assert_eq!(CheckedShl::checked_shl(&x, 16), None);

Object Safety§

This trait is not object safe.

Implementations on Foreign Types§

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impl CheckedShl for i8

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fn checked_shl(&self, rhs: u32) -> Option<i8>

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impl CheckedShl for i16

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fn checked_shl(&self, rhs: u32) -> Option<i16>

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impl CheckedShl for i32

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fn checked_shl(&self, rhs: u32) -> Option<i32>

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impl CheckedShl for i64

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fn checked_shl(&self, rhs: u32) -> Option<i64>

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impl CheckedShl for i128

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fn checked_shl(&self, rhs: u32) -> Option<i128>

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impl CheckedShl for isize

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fn checked_shl(&self, rhs: u32) -> Option<isize>

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impl CheckedShl for u8

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fn checked_shl(&self, rhs: u32) -> Option<u8>

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impl CheckedShl for u16

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fn checked_shl(&self, rhs: u32) -> Option<u16>

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impl CheckedShl for u32

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fn checked_shl(&self, rhs: u32) -> Option<u32>

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impl CheckedShl for u64

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fn checked_shl(&self, rhs: u32) -> Option<u64>

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impl CheckedShl for u128

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fn checked_shl(&self, rhs: u32) -> Option<u128>

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impl CheckedShl for usize

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fn checked_shl(&self, rhs: u32) -> Option<usize>

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impl<T, D> CheckedShl for TypeWithDefault<T, D>
where T: CheckedShl, D: Get<T>,

Implementors§