Hands on the Num Crate in Rust

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

:timing
:sccache 1
:dep num = "0.4.0"

use num;

num::integer::div_rem¶

let (div, rem) = num::integer::div_rem(8, 5);
println!("div: {}, rem: {}", div, rem);

div: 1, rem: 3

num::signum(8)

1

num::signum(-9)

-1

num::signum(-0)

0

num::signum(-0.0)

-1.0

The function num::integer::binomial(n, k) calculates the number of combinations of choosing k from n.

num::integer::binomial(4, 2)

6

num::integer::binomial(10, 3)

120

num::integer::binomial(3, 3)

1

num::integer::binomial(1, 2)

0

num::integer::binomial(2, 3)

0