wait() status functions (std.os.linux.W) return values differ from c

[pmovzxdq]

Zig Version

0.14.1

Steps to Reproduce and Observed Behavior

As an example, I have the following c code:

// test.c

#include <sys/wait.h>
#include <stdio.h>

int main() {
    int s = 0x0080;
    printf("%d, %d, %d, %d\n", WIFEXITED(s), WIFSTOPPED(s), WIFSIGNALED(s), WIFCONTINUED(s));
    return 0;
}

I also have this zig code:

// test.zig

const std = @import("std");

pub fn main() !void {
    const s: u32 = 0x0080;
    std.debug.print("{}, {}, {}\n", .{
        std.os.linux.W.IFEXITED(s),
        std.os.linux.W.IFSTOPPED(s),
        std.os.linux.W.IFSIGNALED(s),
        // std.os.linux.W.IFCONTINUED(s)
    });
}

The result is different:

$ zig run test.zig
true, true, true
$ gcc test.c; ./a.out
1, 0, 0, 0

Zig also does not have an equivalent function for the WIFCONTINUED(s) macro.

Expected Behavior

The result should be the same, and zig should implement the IFCONTINUED function.

[pmovzxdq]

I will make a pull request