num_traits::ops::checked

Trait CheckedRem

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pub trait CheckedRem: Sized + Rem<Self, Output = Self> {
    // Required method
    fn checked_rem(&self, v: &Self) -> Option<Self>;
}
Expand description

Performs an integral remainder that returns None instead of panicking on division by zero and instead of wrapping around on underflow and overflow.

Required Methods§

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fn checked_rem(&self, v: &Self) -> Option<Self>

Finds the remainder of dividing two numbers, checking for underflow, overflow and division by zero. If any of that happens, None is returned.

§Examples
use num_traits::CheckedRem;
use std::i32::MIN;

assert_eq!(CheckedRem::checked_rem(&10, &7), Some(3));
assert_eq!(CheckedRem::checked_rem(&10, &-7), Some(3));
assert_eq!(CheckedRem::checked_rem(&-10, &7), Some(-3));
assert_eq!(CheckedRem::checked_rem(&-10, &-7), Some(-3));

assert_eq!(CheckedRem::checked_rem(&10, &0), None);

assert_eq!(CheckedRem::checked_rem(&MIN, &1), Some(0));
assert_eq!(CheckedRem::checked_rem(&MIN, &-1), None);

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

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impl CheckedRem for i8

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fn checked_rem(&self, v: &i8) -> Option<i8>

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impl CheckedRem for i16

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fn checked_rem(&self, v: &i16) -> Option<i16>

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impl CheckedRem for i32

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fn checked_rem(&self, v: &i32) -> Option<i32>

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impl CheckedRem for i64

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fn checked_rem(&self, v: &i64) -> Option<i64>

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impl CheckedRem for i128

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fn checked_rem(&self, v: &i128) -> Option<i128>

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impl CheckedRem for isize

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impl CheckedRem for u8

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fn checked_rem(&self, v: &u8) -> Option<u8>

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impl CheckedRem for u16

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fn checked_rem(&self, v: &u16) -> Option<u16>

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impl CheckedRem for u32

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fn checked_rem(&self, v: &u32) -> Option<u32>

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impl CheckedRem for u64

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fn checked_rem(&self, v: &u64) -> Option<u64>

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impl CheckedRem for u128

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fn checked_rem(&self, v: &u128) -> Option<u128>

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impl CheckedRem for usize

Implementors§