Protocol std::builtins::internal::WithOverflow

Mixin for wrapping and checked arithmetic operations.

Provided methods

• fn wrapping_add(lhs: Self, rhs: Self) -> Self

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  Adds two numbers, wrapping around at the boundary of the type.

• fn wrapping_sub(lhs: Self, rhs: Self) -> Self

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  Subtracts two numbers, wrapping around at the boundary of the type.

• fn wrapping_mul(lhs: Self, rhs: Self) -> Self

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  Multiplies two numbers, wrapping around at the boundary of the type.

• fn wrapping_div(lhs: Self, rhs: Self) -> Self

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  Divides two numbers, wrapping around at the boundary of the type.

  The only case where such wrapping can occur is when one divides MIN / -1 on a signed type. This is equivalent to -MIN, a number that is too large to represent in the type. In such a case, this function returns MIN itself.

• fn checked_add(lhs: Self, rhs: Self) -> Option<Self>

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  Tries to add two numbers, returning Option::none() if overflow occurrs.

• fn checked_sub(lhs: Self, rhs: Self) -> Option<Self>

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  Tries to subtract two numbers, returning Option::none() if overflow occurrs.

• fn checked_mul(lhs: Self, rhs: Self) -> Option<Self>

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  Tries to multiply two numbers, returning Option::none() if overflow occurrs.

• fn checked_div(lhs: Self, rhs: Self) -> Option<Self>

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  Tries to divide two numbers, returning Option::none() if overflow occurrs or rhs is zero.

  Overflow during division can only happen when one divides MIN / -1 on a signed type.