Meg's Mirrors

zig

1	fn cmpxchgStrongButNotAtomic(comptime T: type, ptr: *T, expected_value: T, new_value: T) ?T {
2	const old_value = ptr.*;
3	if (old_value == expected_value) {
4	ptr.* = new_value;
5	return null;
6	} else {
7	return old_value;
8	}
9	}
10
11	// syntax