Integer widths in Zig

The width is part of the type: u8 and i32, u64 — and u3 if three bits is what you mean.

const std = @import("std");

pub fn main() void {
    // Widths are part of the type: u8, i32, u64 -- even u3 exists.
    const crew: u8 = 12;
    const depth: i32 = -180;
    const grains: u64 = 4_294_967_296;
    const die_faces: u3 = 6;

    std.debug.print("crew {d}, depth {d} m\n", .{ crew, depth });
    std.debug.print("grains {d}, die faces {d}\n", .{ grains, die_faces });
    std.debug.print("a u3 tops out at {d}\n", .{std.math.maxInt(u3)});
}

How it works

1. u8, i32, and u64 size the crew, the depth, and the sand grains exactly.
2. u3 is a real type holding 0 through 7 — arbitrary widths are legal.
3. std.math.maxInt(u3) asks the type itself for its ceiling.

Keywords and builtins used here

• const
• fn
• i32
• pub
• u64
• u8
• void

The run, in numbers

Lines

13

Characters to type

423

Tokens

111

Three-star pace

70 tpm

At the three-star pace of 70 tokens a minute, this run takes about 95 seconds.

Type this snippet

Step 3 of 3 in Values, step 3 of 27 in Language basics.

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