# [−] [src] Trait num_traits::ops::checked::CheckedMul

    pub trait CheckedMul: Sized + Mul<Self, Output = Self> {
        fn checked_mul(&self, v: &Self) -> Option<Self>;
    }

Performs multiplication that returns `None` instead of wrapping around on underflow or overflow.

## Required methods

### `fn checked_mul(&self, v: &Self) -> Option<Self>`

Multiplies two numbers, checking for underflow or overflow. If underflow or overflow happens, `None` is returned.

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## Implementations on Foreign Types

### `impl CheckedMul for u8` [src]

#### `fn checked_mul(&self, v: &u8) -> Option<u8>` [src]

### `impl CheckedMul for u16` [src]

#### `fn checked_mul(&self, v: &u16) -> Option<u16>` [src]

### `impl CheckedMul for u32` [src]

#### `fn checked_mul(&self, v: &u32) -> Option<u32>` [src]

### `impl CheckedMul for u64` [src]

#### `fn checked_mul(&self, v: &u64) -> Option<u64>` [src]

### `impl CheckedMul for usize` [src]

#### `fn checked_mul(&self, v: &usize) -> Option<usize>` [src]

### `impl CheckedMul for u128` [src]

#### `fn checked_mul(&self, v: &u128) -> Option<u128>` [src]

### `impl CheckedMul for i8` [src]

#### `fn checked_mul(&self, v: &i8) -> Option<i8>` [src]

### `impl CheckedMul for i16` [src]

#### `fn checked_mul(&self, v: &i16) -> Option<i16>` [src]

### `impl CheckedMul for i32` [src]

#### `fn checked_mul(&self, v: &i32) -> Option<i32>` [src]

### `impl CheckedMul for i64` [src]

#### `fn checked_mul(&self, v: &i64) -> Option<i64>` [src]

### `impl CheckedMul for isize` [src]

#### `fn checked_mul(&self, v: &isize) -> Option<isize>` [src]

### `impl CheckedMul for i128` [src]

#### `fn checked_mul(&self, v: &i128) -> Option<i128>` [src]

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## Implementors

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