int_traits

This crate provides extra traits for working with integers. The traits provided are those provided by default for floating point values, but extended to provide optimized integer routines.

This is mainly intended to avoid extensive casting when we want extended operations for integers.

let a = 50_usize; let a_sqrt = (a as f32).sqrt() as usize;

becomes

let a = 50_usize; let a_sqrt = a.sqrt();

Coverage

We provide the following functions

sqrt cbrt log log2 log10

for the following types

i8 i16 i32 i64 u8 u16 u32 u64 isize usize

If a negative number is passed to one of the functions, we panic on runtime.

Examples

``` extern crate int_traits;

use int_traits::IntTraits;

fn main() { let a = 50_usize;

println!("{}", a.sqrt());

} ```

Design Questions

• It is not known whether we want to return floating point values or perform the integer rounding explicitly.

  This could likely be split up into seperate functions isqrt and sqrt or two different trait implementations could be provided.

• We do not perform any optimized functions currently. For example, since we do not need to calculate the fractional part of a square root we can make some potential shortcuts to improve this.