Math: Math functions

● Beginner2 min

sqrt, pow, gcd, lcm, is_prime, factorial, mean, and the constants pi and e.

use std.math

fn main() {
    print(math.sqrt(16.0))
    print(math.pow(2.0, 0.5))
    print(math.gcd(12, 18))
    print(math.is_prime(97))
    print(math.pi)
}

kavach run functions.kav

4.01.41421356237309516true3.141592653589793

Name	Gives
`math.pi`, `math.e`	The constants, as `Float`
`math.sqrt(x)`, `math.pow(x, y)`	For `Float` or `Float32`, giving the same type; a `Float32` is worked out as a `Float` and rounded once
`math.floor(x)`, `math.ceil(x)`, `math.round(x)`	The same; `round` rounds halves away from zero
`math.gcd(a, b)`, `math.lcm(a, b)`	Greatest common divisor and least common multiple of `Int`s
`math.is_prime(n)`	Whether `n` is a prime number
`math.factorial(n)`	`n!` for `0 <= n <= 20` (larger values don't fit in `Int`)
`math.mean(xs)`	The average of a `[Float]`, or `none` for an empty list