Crate muldiv

Provides a trait for numeric types to perform combined multiplication and division with overflow protection.

The MulDiv trait provides functions for performing combined multiplication and division for numeric types and comes with implementations for all the primitive integer types. Three variants with different rounding characteristics are provided: mul_div_floor(), mul_div_round() and mul_div_ceil().

Example

extern crate muldiv;
use muldiv::MulDiv;
// Calculates 127 * 23 / 42 rounded down
let x = 127u8.mul_div_floor(23, 42);
assert_eq!(x, Some(69));

Traits

MulDiv

Trait for calculating val * num / denom with different rounding modes and overflow protection.