Function printInt [src]

Prototype

 pub inline fn printInt( w: *Writer, value: anytype, base: u8, case: std.fmt.Case, options: std.fmt.Options, ) Error!void

Parameters

w: *Writerbase: u8case: std.fmt.Caseoptions: std.fmt.Options

Possible Errors

WriteFailed

See the Writer implementation for detailed diagnostics.

Example

 test printInt {
    try testPrintIntCase("-1", @as(i1, -1), 10, .lower, .{});

    try testPrintIntCase("-101111000110000101001110", @as(i32, -12345678), 2, .lower, .{});
    try testPrintIntCase("-12345678", @as(i32, -12345678), 10, .lower, .{});
    try testPrintIntCase("-bc614e", @as(i32, -12345678), 16, .lower, .{});
    try testPrintIntCase("-BC614E", @as(i32, -12345678), 16, .upper, .{});

    try testPrintIntCase("12345678", @as(u32, 12345678), 10, .upper, .{});

    try testPrintIntCase("   666", @as(u32, 666), 10, .lower, .{ .width = 6 });
    try testPrintIntCase("  1234", @as(u32, 0x1234), 16, .lower, .{ .width = 6 });
    try testPrintIntCase("1234", @as(u32, 0x1234), 16, .lower, .{ .width = 1 });

    try testPrintIntCase("+42", @as(i32, 42), 10, .lower, .{ .width = 3 });
    try testPrintIntCase("-42", @as(i32, -42), 10, .lower, .{ .width = 3 });

    try testPrintIntCase("123456789123456789", @as(comptime_int, 123456789123456789), 10, .lower, .{});
}

Source

  pub inline fn printInt(
    w: *Writer,
    value: anytype,
    base: u8,
    case: std.fmt.Case,
    options: std.fmt.Options,
) Error!void {
    switch (@TypeOf(value)) {
        isize, usize => {},
        comptime_int => {
            if (comptime std.math.cast(usize, value)) |x| return printIntAny(w, x, base, case, options);
            if (comptime std.math.cast(isize, value)) |x| return printIntAny(w, x, base, case, options);
            const Int = std.math.IntFittingRange(value, value);
            return printIntAny(w, @as(Int, value), base, case, options);
        },
        else => switch (@typeInfo(@TypeOf(value)).int.signedness) {
            .signed => if (std.math.cast(isize, value)) |x| return printIntAny(w, x, base, case, options),
            .unsigned => if (std.math.cast(usize, value)) |x| return printIntAny(w, x, base, case, options),
        },
    }
    return printIntAny(w, value, base, case, options);
}  