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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Private Function

testingFreqBufs

Doc Source

Private Function

std.compress.flate.Compress.testingFreqBufs

fn testingFreqBufs() !*[2][65536]u8

[0] is a gradient where the probability of lower values decreases across it [1] is completely random and hence uncompressable

File

compress/flate/Compress.zig:1410

fn testingFreqBufs() !*[2][65536]u8 {
    const fbufs = try std.testing.allocator.create([2][65536]u8);
    var prng: std.Random.DefaultPrng = .init(std.testing.random_seed);
    prng.random().bytes(&fbufs[0]);
    prng.random().bytes(&fbufs[1]);
    for (0.., &fbufs[0], fbufs[1]) |i, *grad, rand| {
        const prob = @as(u8, @intCast(255 - i / (fbufs[0].len * 256)));
        grad.* /= @max(1, rand / @max(1, prob));
    }
    return fbufs;
}