const std = @import("std");

var prng = std.rand.DefaultPrng.init(124346234556);
const rand = prng.random();

pub fn init() void {
    var seed: u64 = undefined;
    try std.posix.getrandom(std.mem.asBytes(&seed));
    prng = std.rand.DefaultPrng.init(seed);
}

pub fn randMinMaxFloat(min: f32, max: f32) f32 {
    var r1 = rand.float(f32);
    r1 = 2 * (r1 - 0.5); //-0.5..0.5
    return (@abs(min) + @abs(max)) / 2 * r1;
}