2 stable releases
1.2.0 | Jul 19, 2022 |
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1.1.0 | Jul 10, 2022 |
1.0.0 |
|
#5 in #pseudo
8KB
95 lines
SOL_PRNG
A simple functional pseudo random number generator. No mutability. Relies on shadowing as of now.
Functions:
let r = Rand::new(42);
// -> true || false
r.next_bool();
// -> i32
r.next_i32();
// -> u32
r.next_u32();
// -> i64
r.next_i64();
// -> u64
r.next_u64();
// -> u32 in inclusive range (from, to)
r.next_ranged_u32(42, u32::MAX);
// -> u64 in inclusive range (from, to)
r.next_ranged_u64(42, u64::MAX);
Usage:
// Create an initial Rand. For non-determinism use something like the system
// time as a seed.
let r = Rand::new(42);
// Shadows previous Rand, creates n (holds your result).
let (r, n) = r.next_i32();
println!("n: {}", n);
// Shadows previous Rand, shadows n (holds your new result).
let (r, n) = r.next_i32();
println!("n: {}", n);
// It does not matter the type of the last generated value.
let (r, n) = r.next_bool();
println!("n: {}", n);
let (r, n) = r.next_u64();
println!("n: {}", n);
let (r, n) = r.next_ranged_u32(1, 255);
println!("n: {}", n);