Trait option_operations::mul::OptionOverflowingMul

pub trait OptionOverflowingMul<Rhs = Self, InnerRhs = Rhs> {
    type Output;

    // Required method
    fn opt_overflowing_mul(self, rhs: Rhs) -> Option<(Self::Output, bool)>;
}

Trait for values and Options overflowing multiplication.

Implementing this trait leads to the following auto-implementations:

• OptionOverflowingMul<Option<InnerRhs>> for T.
• OptionOverflowingMul<Rhs> for Option<T>.
• OptionOverflowingMul<Option<InnerRhs>> for Option<T>.
• … and some variants with references.

Note that since the std library doesn’t define any OverflowingMul trait, users must provide the base implementation for the inner type.

Required Associated Types

type Output

The resulting inner type after applying the multiplication.

Required Methods

fn opt_overflowing_mul(self, rhs: Rhs) -> Option<(Self::Output, bool)>

Returns a tuple of the multiplication along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then self is returned.

Returns None if at least one argument is None.

Implementations on Foreign Types

impl OptionOverflowingMul for i8

type Output = i8

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for i16

type Output = i16

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for i32

type Output = i32

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for i64

type Output = i64

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for i128

type Output = i128

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for u8

type Output = u8

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for u16

type Output = u16

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for u32

type Output = u32

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for u64

type Output = u64

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl OptionOverflowingMul for u128

type Output = u128

fn opt_overflowing_mul(self, rhs: Self) -> Option<(Self::Output, bool)>

impl<T, InnerRhs> OptionOverflowingMul<&Option<InnerRhs>, InnerRhs> for Option<T>

where T: OptionOperations + OptionOverflowingMul<InnerRhs>, InnerRhs: Copy,

type Output = <T as OptionOverflowingMul<InnerRhs>>::Output

fn opt_overflowing_mul( self, rhs: &Option<InnerRhs>, ) -> Option<(Self::Output, bool)>

impl<T, InnerRhs> OptionOverflowingMul<Option<InnerRhs>, InnerRhs> for Option<T>

where T: OptionOperations + OptionOverflowingMul<InnerRhs>,

type Output = <T as OptionOverflowingMul<InnerRhs>>::Output

fn opt_overflowing_mul( self, rhs: Option<InnerRhs>, ) -> Option<(Self::Output, bool)>

impl<T, Rhs> OptionOverflowingMul<Rhs> for Option<T>

where T: OptionOperations + OptionOverflowingMul<Rhs>,

type Output = <T as OptionOverflowingMul<Rhs>>::Output

fn opt_overflowing_mul(self, rhs: Rhs) -> Option<(Self::Output, bool)>

Implementors

impl<T, InnerRhs> OptionOverflowingMul<&Option<InnerRhs>, InnerRhs> for T

where T: OptionOperations + OptionOverflowingMul<InnerRhs>, InnerRhs: Copy,

type Output = <T as OptionOverflowingMul<InnerRhs>>::Output

impl<T, InnerRhs> OptionOverflowingMul<Option<InnerRhs>, InnerRhs> for T

where T: OptionOperations + OptionOverflowingMul<InnerRhs>,

type Output = <T as OptionOverflowingMul<InnerRhs>>::Output