memx 0.2.0

memory functions like libc memcmp(), memchr(), memmem(), memcpy(), memset()
Documentation 
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/**/

#[test]
fn test00() {
    let buf_0 = vec![];
    let pat_1 = vec![];
    let pat_2 = vec![b'A', b'B', b'C', b'D', b'E', b'F', b'G', b'H', b'J', b'0'];
    //
    let r = test_memcmp(&buf_0, &pat_1);
    assert_eq!(r, Ordering::Equal);
    let r = test_memcmp(&buf_0, &pat_2);
    assert_eq!(r, Ordering::Less);
    let r = test_memcmp(&pat_2, &pat_1);
    assert_eq!(r, Ordering::Greater);
    //
    let buf_0 = vec![b'A', b'B', b'C', b'D', b'E'];
    let buf_1 = vec![b'A', b'B', b'C', b'D', b'E', b'F'];
    let r = test_memcmp(&buf_0, &buf_1);
    assert_eq!(r, Ordering::Less);
    let r = test_memcmp(&buf_1, &buf_0);
    assert_eq!(r, Ordering::Greater);
    //
    let buf_16_1 = "0123456789abcdef".as_bytes().to_vec();
    let buf_16_2 = "0123456789abcdef".as_bytes().to_vec();
    let r = test_memcmp(&buf_16_1, &buf_16_2);
    assert_eq!(r, Ordering::Equal);
    let buf_8_1 = "01234567".as_bytes().to_vec();
    let buf_8_2 = "01234567".as_bytes().to_vec();
    let r = test_memcmp(&buf_8_1, &buf_8_2);
    assert_eq!(r, Ordering::Equal);
    let buf_4_1 = "0123".as_bytes().to_vec();
    let buf_4_2 = "0123".as_bytes().to_vec();
    let r = test_memcmp(&buf_4_1, &buf_4_2);
    assert_eq!(r, Ordering::Equal);
    let buf_2_1 = "01".as_bytes().to_vec();
    let buf_2_2 = "01".as_bytes().to_vec();
    let r = test_memcmp(&buf_2_1, &buf_2_2);
    assert_eq!(r, Ordering::Equal);
}

#[test]
fn test01() {
    let buf_0 = vec![b'A', b'B', b'C', b'D', b'E', b'F', b'G', b'H', b'J', b'5'];
    let pat_1 = vec![b'A', b'B', b'C', b'D', b'E', b'F', b'G', b'H', b'J', b'9'];
    let pat_2 = vec![b'A', b'B', b'C', b'D', b'E', b'F', b'G', b'H', b'J', b'0'];
    //
    let r = test_memcmp(&buf_0[0..(buf_0.len() - 1)], &pat_1[0..(pat_1.len() - 1)]);
    assert_eq!(r, Ordering::Equal);
    let r = test_memcmp(&buf_0, &pat_1);
    assert_eq!(r, Ordering::Less);
    let r = test_memcmp(&buf_0, &pat_2);
    assert_eq!(r, Ordering::Greater);
}

#[test]
fn test02() {
    let buf_0 = [0_u8];
    let f = |x: usize| {
        let buf_1 = {
            let mut buf: Vec<u8> = buf_0.repeat(1 + x);
            buf.append(&mut buf_0.repeat(x));
            buf
        };
        //
        let mut buf = buf_1.clone();
        buf.push(b'5');
        let mut pat = buf_1.clone();
        pat.push(b'5');
        let r = cfg_iif::cfg_iif!(all(not(miri), feature = "test_alignment_check",
        any(target_arch = "x86_64", target_arch = "x86")) {
            if _RT_AC {
                x86_alignment_check::ac_call_once(|| { test_memcmp(&buf[x..], &pat[x..]) })
            } else {
                test_memcmp(&buf[x..], &pat[x..])
            }
        } else {
            test_memcmp(&buf[x..], &pat[x..])
        });
        assert_eq!(r, Ordering::Equal);
        //
        let mut buf = buf_1.clone();
        buf.push(b'5');
        let mut pat = buf_1.clone();
        pat.push(b'9');
        let r = cfg_iif::cfg_iif!(all(not(miri), feature = "test_alignment_check",
        any(target_arch = "x86_64", target_arch = "x86")) {
            if _RT_AC {
                x86_alignment_check::ac_call_once(|| { test_memcmp(&buf[x..], &pat[x..]) })
            } else {
                test_memcmp(&buf[x..], &pat[x..])
            }
        } else {
            test_memcmp(&buf[x..], &pat[x..])
        });
        assert_eq!(r, Ordering::Less);
        //
        let mut buf = buf_1.clone();
        buf.push(b'5');
        let mut pat = buf_1.clone();
        pat.push(b'0');
        let r = cfg_iif::cfg_iif!(all(not(miri), feature = "test_alignment_check",
        any(target_arch = "x86_64", target_arch = "x86")) {
            if _RT_AC {
                x86_alignment_check::ac_call_once(|| { test_memcmp(&buf[x..], &pat[x..]) })
            } else {
                test_memcmp(&buf[x..], &pat[x..])
            }
        } else {
            test_memcmp(&buf[x..], &pat[x..])
        });
        assert_eq!(r, Ordering::Greater);
        //
        let buf = buf_1.clone();
        let mut pat = buf_1.clone();
        pat.push(b'0');
        let r = cfg_iif::cfg_iif!(all(not(miri), feature = "test_alignment_check",
        any(target_arch = "x86_64", target_arch = "x86")) {
            if _RT_AC {
                x86_alignment_check::ac_call_once(|| { test_memcmp(&buf[x..], &pat[x..]) })
            } else {
                test_memcmp(&buf[x..], &pat[x..])
            }
        } else {
            test_memcmp(&buf[x..], &pat[x..])
        });
        assert_eq!(r, Ordering::Less);
        //
        let mut buf = buf_1.clone();
        buf.push(b'5');
        let pat = buf_1;
        let r = cfg_iif::cfg_iif!(all(not(miri), feature = "test_alignment_check",
        any(target_arch = "x86_64", target_arch = "x86")) {
            if _RT_AC {
                x86_alignment_check::ac_call_once(|| { test_memcmp(&buf[x..], &pat[x..]) })
            } else {
                test_memcmp(&buf[x..], &pat[x..])
            }
        } else {
            test_memcmp(&buf[x..], &pat[x..])
        });
        assert_eq!(r, Ordering::Greater);
    };
    #[cfg(not(miri))]
    {
        for x in 0..600 {
            f(x);
        }
    }
    #[cfg(miri)]
    {
        for x in [0, 299, 599].into_iter() {
            f(x);
        }
    }
}