Zig 0.17.0-dev (Split by item)

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random

Threaded.random

fn random(userdata: ?*anyopaque, buffer: []u8) void

File

lib/std/Io/Threaded.zig:17126

Code

fn random(userdata: ?*anyopaque, buffer: []u8) void {
    const t: *Threaded = @ptrCast(@alignCast(userdata));
    const thread = Thread.current orelse return randomMainThread(t, buffer);
    if (!thread.csprng.isInitialized()) {
        @branchHint(.unlikely);
        var seed: [Csprng.seed_len]u8 = undefined;
        randomMainThread(t, &seed);
        thread.csprng.rng = .init(seed);
    }
    thread.csprng.rng.fill(buffer);
}