Function alignment [src]

Returns the alignment of type T. Note that if T is a pointer type the result is different than the one returned by @alignOf(T). If T is a pointer type the alignment of the type it points to is returned.

Prototype

pub fn alignment(comptime T: type) comptime_int

Parameters

T: type

Example

 test alignment {
    try testing.expect(alignment(u8) == 1);
    try testing.expect(alignment(*align(1) u8) == 1);
    try testing.expect(alignment(*align(2) u8) == 2);
    try testing.expect(alignment([]align(1) u8) == 1);
    try testing.expect(alignment([]align(2) u8) == 2);
    try testing.expect(alignment(fn () void) > 0);
    try testing.expect(alignment(*const fn () void) > 0);
    try testing.expect(alignment(*align(128) const fn () void) == 128);
}

Source

  pub fn alignment(comptime T: type) comptime_int {
    return switch (@typeInfo(T)) {
        .optional => |info| switch (@typeInfo(info.child)) {
            .pointer, .@"fn" => alignment(info.child),
            else => @alignOf(T),
        },
        .pointer => |info| info.alignment,
        else => @alignOf(T),
    };
}  