Zig 0.17.0-dev (Split by item)

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 library itself.

testMemcpyImpl

memcpy.testMemcpyImpl

fn testMemcpyImpl(comptime memcpyImpl: anytype) !void

File

lib/compiler_rt/memcpy.zig:197

Code

fn testMemcpyImpl(comptime memcpyImpl: anytype) !void {
    const max_len = 1024;
    var buffer: [max_len + @alignOf(Element) - 1]u8 align(@alignOf(Element)) = undefined;
    for (&buffer, 0..) |*b, i| {
        b.* = @intCast(i % 97);
    }
    var dest: [max_len + @alignOf(Element) - 1]u8 align(@alignOf(Element)) = undefined;

    for (0..max_len) |copy_len| {
        for (0..@alignOf(Element)) |s_offset| {
            for (0..@alignOf(Element)) |d_offset| {
                @memset(&dest, 0xff);
                const s = buffer[s_offset..][0..copy_len];
                const d = dest[d_offset..][0..copy_len];
                _ = memcpyImpl(@ptrCast(d.ptr), @ptrCast(s.ptr), s.len);
                std.testing.expectEqualSlices(u8, s, d) catch |e| {
                    std.debug.print("error encountered for length={d}, s_offset={d}, d_offset={d}\n", .{
                        copy_len, s_offset, d_offset,
                    });
                    return e;
                };
            }
        }
    }
}