Now with tests for the basic algorithms.

Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 authors = ["awick"]
 
 [dependencies]
+quickcheck = "0.7.1"

generate.hs

@@ -51,15 +51,20 @@ conversions :: [Int] -> [(Int,Int)]
 conversions []       = []
 conversions (x:rest) = (map (\ y -> (x,y)) rest) ++ conversions rest
 
-generateTestBlock :: Handle -> String -> IO ()
+generateTestBlock :: Handle -> String -> Level -> Bool -> [Int -> Int] -> IO ()
-generateTestBlock hndl name =
+generateTestBlock hndl name level useRT addOns =
   do hPutStrLn hndl ("  mod " ++ name ++ " {")
-     hPutStrLn hndl ("    use super::super::*;\n")
+     when useRT $
-     hPutStrLn hndl ("    use testing::run_test;\n")
+       do hPutStrLn hndl ("    use super::super::*;")
+          hPutStrLn hndl ("    use testing::run_test;")
+          hPutStrLn hndl ""
      forM_ (sort (Map.toList finalMap)) $ \ (size, kind) ->
-       when (kind >= Base) $
+       when (kind >= level) $
          hPutStrLn hndl ("    generate_" ++ name ++ 
-                         "_tests!(U" ++ show size ++ ");")
+                         "_tests!(U" ++ show size ++ ", " ++
+                         "u" ++ show size ++
+                         concatMap (\ f -> ", U" ++ show (f size)) addOns ++
+                         ");")
      hPutStrLn hndl "  }"
 
 generateInvocs :: IO ()
@@ -88,7 +93,16 @@ generateInvocs =
                          "U" ++ show b ++ ");")
        hPutStrLn hndl "\n#[cfg(test)]"
        hPutStrLn hndl "mod tests {"
-       generateTestBlock hndl "base"
+       generateTestBlock hndl "base"       Base   True  []
+       generateTestBlock hndl "conversion" Base   False []
+       generateTestBlock hndl "codec"      Base   False []
+       generateTestBlock hndl "cmp"        Base   True  []
+       generateTestBlock hndl "sub"        Base   True  []
+       generateTestBlock hndl "shiftl"     Base   True  []
+       generateTestBlock hndl "shiftr"     Base   True  []
+       generateTestBlock hndl "add"        DivMul True  [(+ 64)]
+       generateTestBlock hndl "mul"        DivMul True  [(* 2)]
+       generateTestBlock hndl "div"        DivMul True  []
        hPutStrLn hndl "}"
 
 log :: String -> IO ()
@@ -160,8 +174,8 @@ generateAllTheTests =
      generateTests DivMul "add" db1 $ \ size memory0 ->
        let (a, memory1) = generateNum memory0 "a" size
            (b, memory2) = generateNum memory1 "b" size
-           c            = modulate    (a + b)     size
+           c            = a + b
-       in (Map.fromList [("a", showX a), ("b", showX b), ("c", showX c)], memory2)
+       in (Map.fromList [("a", showX a), ("b", showX b),("c", showX c)], memory2)
      let (db2, gen2) = emptyDatabase gen1
      generateTests Barrett "barrett_gen" db2 $ \ size memory0 ->
        let (m, memory1) = generateNum memory0 "m" size
@@ -201,16 +215,18 @@ generateAllTheTests =
      generateTests DivMul "div" db6 $ \ size memory0 ->
        let (a, memory1) = generateNum memory0 "a" size
            (b, memory2) = generateNum memory1 "b" size
-           res          = Map.fromList [("a", showX a), ("b", showX b), ("c", showX (a `div` b))]
+           q            = a `div` b
+           r            = a `mod` b
+           res          = Map.fromList [("a", showX a), ("b", showX b),
+                                        ("q", showX q), ("r", showX r)]
        in (res, memory2)
      let (db7, gen7) = emptyDatabase gen5
      generateTests DivMul "mul" db7 $ \ size memory0 ->
        let (a, memory1) = generateNum memory0 "a" size
            (b, memory2) = generateNum memory1 "b" size
            c            = a * b
-           d            = modulate c size
            res          = Map.fromList [("a", showX a), ("b", showX b),
-                                        ("c", showX c), ("d", showX d)]
+                                        ("c", showX c)]
        in (res, memory2)
      let (db8, gen8) = emptyDatabase gen6
      generateTests Base "shiftl" db8 $ \ size memory0 ->

src/lib.rs

@@ -1,4 +1,9 @@
 #![recursion_limit="1024"]
+
+#[cfg(test)]
+#[macro_use]
+extern crate quickcheck;
+
 pub mod unsigned;
 #[cfg(test)]
 pub mod testing;

src/unsigned/add.rs

@@ -14,7 +14,7 @@ pub fn addition(dest: &mut [u64], src: &[u64])
     dest[src.len()] = carry as u64;
 }
 
-pub fn unsafe_addition(dest: &mut [u64], src: &[u64])
+pub fn unsafe_addition(dest: &mut [u64], src: &[u64], really_unsafe: bool)
 {
     assert_eq!(dest.len(), src.len());
     let mut carry: u128 = 0;
@@ -27,7 +27,10 @@ pub fn unsafe_addition(dest: &mut [u64], src: &[u64])
         dest[i] = z128 as u64;
         carry = z128 >> 64;
     }
+
+    if !really_unsafe {
         assert_eq!(carry, 0, "Unsafe overflow in AddAssign");
+    }
 }
 
 macro_rules! addition_impls
@@ -35,13 +38,13 @@ macro_rules! addition_impls
     ($base: ident, $bigger: ident) => {
         impl AddAssign<$base> for $base {
             fn add_assign(&mut self, rhs: $base) {
-                unsafe_addition(&mut self.value, &rhs.value);
+                unsafe_addition(&mut self.value, &rhs.value, false);
             }
         }
 
         impl<'a> AddAssign<&'a $base> for $base {
             fn add_assign(&mut self, rhs: &$base) {
-                unsafe_addition(&mut self.value, &rhs.value);
+                unsafe_addition(&mut self.value, &rhs.value, false);
             }
         }
 
@@ -95,4 +98,29 @@ macro_rules! addition_impls
     }
 }
 
-//addition_impls!(U192,   U256);
+#[cfg(test)]
+macro_rules! generate_add_tests {
+    ($name: ident, $lname: ident, $plus1: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/add/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 3, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, bbytes) = case.get("b").unwrap();
+                let (neg2, cbytes) = case.get("c").unwrap();
+                assert!(!neg0 && !neg1 && !neg2);
+
+                let a = $name::from_bytes(abytes);
+                let b = $name::from_bytes(bbytes);
+                let c = $plus1::from_bytes(cbytes);
+                assert_eq!(c, &a + &b);
+
+                if c.value[c.value.len()-1] == 0 {
+                    let mut aprime = a.clone();
+                    aprime += b;
+                    assert_eq!($name::from(c), aprime);
+                }
+            });
+        }
+    };
+}

src/unsigned/base.rs

@@ -38,13 +38,20 @@ macro_rules! generate_base
                 }
             }
         }
-    }
-}
 
-#[cfg(test)]
+        #[cfg(test)]
-macro_rules! generate_base_tests
+        impl Arbitrary for $name {
-{
+            fn arbitrary<G: Gen>(g: &mut G) -> $name {
-    ($name: ident) => {
+                let mut res = $name::zero();
+
+                for val in res.value.iter_mut() {
+                    *val = g.next_u64();
+                }
+                res
+            }
+        }
+
+        #[cfg(test)]
         impl fmt::Debug for $name {
             fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                 f.write_str(stringify!($name))?;
@@ -53,10 +60,15 @@ macro_rules! generate_base_tests
                 f.write_str("}")
             }
         }
+    }
+}
 
+#[cfg(test)]
+macro_rules! generate_base_tests
+{
+    ($name: ident, $lname: ident) => {
         #[test]
-        #[allow(non_snake_case)]
+        fn $lname() {
-        fn $name() {
             let fname = format!("testdata/base/{}.tests", stringify!($name));
             run_test(fname.to_string(), 6, |case| {
                 let (neg0, xbytes) = case.get("x").unwrap();

src/unsigned/cmp.rs

@@ -40,3 +40,33 @@ macro_rules! cmp_impls {
         }
     }
 }
+
+#[cfg(test)]
+macro_rules! generate_cmp_tests {
+    ($name: ident, $lname: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/cmp/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 5, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, bbytes) = case.get("b").unwrap();
+                let (neg2, ebytes) = case.get("e").unwrap();
+                let (neg3, gbytes) = case.get("g").unwrap();
+                let (neg4, lbytes) = case.get("l").unwrap();
+                assert!(!neg0 && !neg1 && !neg2 && !neg3 && !neg4);
+                let a = $name::from_bytes(abytes);
+                let b = $name::from_bytes(bbytes);
+                let e = 1 == ebytes[0];
+                let g = 1 == gbytes[0];
+                let l = 1 == lbytes[0];
+
+                assert_eq!(e, a == b);
+                assert_eq!(g, a >  b);
+                assert_eq!(l, a <  b);
+
+                assert_eq!(e || g, a >= b);
+                assert_eq!(e || l, a <= b);
+            });
+        }
+    };
+}

src/unsigned/codec.rs

@@ -68,3 +68,21 @@ macro_rules! generate_codec
         generate_encoder!($name);
     }
 }
+
+#[cfg(test)]
+macro_rules! generate_codec_tests {
+    ($name: ident, $lname: ident) => {
+        #[cfg(test)]
+        mod $lname {
+            use super::super::super::*;
+
+            quickcheck! {
+                fn decode_encode(x: $name) -> bool {
+                    let bytes = x.to_bytes();
+                    let x2    = $name::from_bytes(&bytes);
+                    x == x2
+                }
+            }
+        }
+    };
+}

src/unsigned/conversion.rs

@@ -19,6 +19,26 @@ macro_rules! generate_base_conversions
     () => {};
 }
 
+#[cfg(test)]
+macro_rules! generate_conversion_tests
+{
+    ($name: ident, $lname: ident) => {
+        #[cfg(test)]
+        mod $lname {
+            use super::super::super::*;
+            use std::convert::From;
+
+            quickcheck! {
+                fn conversion_u8(   x: u8)    -> bool { x == u8::from($name::from(x))    }
+                fn conversion_u16(  x: u16)   -> bool { x == u16::from($name::from(x))   }
+                fn conversion_u32(  x: u32)   -> bool { x == u32::from($name::from(x))   }
+                fn conversion_u64(  x: u64)   -> bool { x == u64::from($name::from(x))   }
+                fn conversion_usize(x: usize) -> bool { x == usize::from($name::from(x)) }
+            }
+        }
+    }
+}
+
 macro_rules! conversion_impls
 {
     ($name: ident, $other: ident) => {

src/unsigned/div.rs

@@ -220,3 +220,28 @@ macro_rules! div_impls
         }
     }
 }
+
+#[cfg(test)]
+macro_rules! generate_div_tests {
+    ($name: ident, $lname: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/div/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 4, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, bbytes) = case.get("b").unwrap();
+                let (neg2, qbytes) = case.get("q").unwrap();
+                let (neg3, rbytes) = case.get("r").unwrap();
+                assert!(!neg0 && !neg1 && !neg2 && !neg3);
+
+                let a = $name::from_bytes(abytes);
+                let b = $name::from_bytes(bbytes);
+                let q = $name::from_bytes(qbytes);
+                let r = $name::from_bytes(rbytes);
+                let (myq, myr) = a.divmod(&b);
+                assert_eq!(q, myq);
+                assert_eq!(r, myr);
+            });
+        }
+    };
+}

src/unsigned/invoc.rs

@@ -1229,57 +1229,470 @@ conversion_impls!(U32896, U61568);
 mod tests {
   mod base {
     use super::super::*;
-
     use testing::run_test;
 
-    generate_base_tests!(U192);
+    generate_base_tests!(U192, u192);
-    generate_base_tests!(U256);
+    generate_base_tests!(U256, u256);
-    generate_base_tests!(U320);
+    generate_base_tests!(U320, u320);
-    generate_base_tests!(U384);
+    generate_base_tests!(U384, u384);
-    generate_base_tests!(U448);
+    generate_base_tests!(U448, u448);
-    generate_base_tests!(U512);
+    generate_base_tests!(U512, u512);
-    generate_base_tests!(U576);
+    generate_base_tests!(U576, u576);
-    generate_base_tests!(U640);
+    generate_base_tests!(U640, u640);
-    generate_base_tests!(U704);
+    generate_base_tests!(U704, u704);
-    generate_base_tests!(U768);
+    generate_base_tests!(U768, u768);
-    generate_base_tests!(U832);
+    generate_base_tests!(U832, u832);
-    generate_base_tests!(U896);
+    generate_base_tests!(U896, u896);
-    generate_base_tests!(U1024);
+    generate_base_tests!(U1024, u1024);
-    generate_base_tests!(U1088);
+    generate_base_tests!(U1088, u1088);
-    generate_base_tests!(U1152);
+    generate_base_tests!(U1152, u1152);
-    generate_base_tests!(U1216);
+    generate_base_tests!(U1216, u1216);
-    generate_base_tests!(U1280);
+    generate_base_tests!(U1280, u1280);
-    generate_base_tests!(U1664);
+    generate_base_tests!(U1664, u1664);
-    generate_base_tests!(U2048);
+    generate_base_tests!(U2048, u2048);
-    generate_base_tests!(U2112);
+    generate_base_tests!(U2112, u2112);
-    generate_base_tests!(U2176);
+    generate_base_tests!(U2176, u2176);
-    generate_base_tests!(U2432);
+    generate_base_tests!(U2432, u2432);
-    generate_base_tests!(U3072);
+    generate_base_tests!(U3072, u3072);
-    generate_base_tests!(U3136);
+    generate_base_tests!(U3136, u3136);
-    generate_base_tests!(U3200);
+    generate_base_tests!(U3200, u3200);
-    generate_base_tests!(U4096);
+    generate_base_tests!(U4096, u4096);
-    generate_base_tests!(U4160);
+    generate_base_tests!(U4160, u4160);
-    generate_base_tests!(U4224);
+    generate_base_tests!(U4224, u4224);
-    generate_base_tests!(U6144);
+    generate_base_tests!(U6144, u6144);
-    generate_base_tests!(U6208);
+    generate_base_tests!(U6208, u6208);
-    generate_base_tests!(U6272);
+    generate_base_tests!(U6272, u6272);
-    generate_base_tests!(U7680);
+    generate_base_tests!(U7680, u7680);
-    generate_base_tests!(U7744);
+    generate_base_tests!(U7744, u7744);
-    generate_base_tests!(U7808);
+    generate_base_tests!(U7808, u7808);
-    generate_base_tests!(U8192);
+    generate_base_tests!(U8192, u8192);
-    generate_base_tests!(U8256);
+    generate_base_tests!(U8256, u8256);
-    generate_base_tests!(U8320);
+    generate_base_tests!(U8320, u8320);
-    generate_base_tests!(U12416);
+    generate_base_tests!(U12416, u12416);
-    generate_base_tests!(U15360);
+    generate_base_tests!(U15360, u15360);
-    generate_base_tests!(U15424);
+    generate_base_tests!(U15424, u15424);
-    generate_base_tests!(U15488);
+    generate_base_tests!(U15488, u15488);
-    generate_base_tests!(U16384);
+    generate_base_tests!(U16384, u16384);
-    generate_base_tests!(U16448);
+    generate_base_tests!(U16448, u16448);
-    generate_base_tests!(U16512);
+    generate_base_tests!(U16512, u16512);
-    generate_base_tests!(U30720);
+    generate_base_tests!(U30720, u30720);
-    generate_base_tests!(U30784);
+    generate_base_tests!(U30784, u30784);
-    generate_base_tests!(U30848);
+    generate_base_tests!(U30848, u30848);
-    generate_base_tests!(U32896);
+    generate_base_tests!(U32896, u32896);
-    generate_base_tests!(U61568);
+    generate_base_tests!(U61568, u61568);
+  }
+  mod conversion {
+    generate_conversion_tests!(U192, u192);
+    generate_conversion_tests!(U256, u256);
+    generate_conversion_tests!(U320, u320);
+    generate_conversion_tests!(U384, u384);
+    generate_conversion_tests!(U448, u448);
+    generate_conversion_tests!(U512, u512);
+    generate_conversion_tests!(U576, u576);
+    generate_conversion_tests!(U640, u640);
+    generate_conversion_tests!(U704, u704);
+    generate_conversion_tests!(U768, u768);
+    generate_conversion_tests!(U832, u832);
+    generate_conversion_tests!(U896, u896);
+    generate_conversion_tests!(U1024, u1024);
+    generate_conversion_tests!(U1088, u1088);
+    generate_conversion_tests!(U1152, u1152);
+    generate_conversion_tests!(U1216, u1216);
+    generate_conversion_tests!(U1280, u1280);
+    generate_conversion_tests!(U1664, u1664);
+    generate_conversion_tests!(U2048, u2048);
+    generate_conversion_tests!(U2112, u2112);
+    generate_conversion_tests!(U2176, u2176);
+    generate_conversion_tests!(U2432, u2432);
+    generate_conversion_tests!(U3072, u3072);
+    generate_conversion_tests!(U3136, u3136);
+    generate_conversion_tests!(U3200, u3200);
+    generate_conversion_tests!(U4096, u4096);
+    generate_conversion_tests!(U4160, u4160);
+    generate_conversion_tests!(U4224, u4224);
+    generate_conversion_tests!(U6144, u6144);
+    generate_conversion_tests!(U6208, u6208);
+    generate_conversion_tests!(U6272, u6272);
+    generate_conversion_tests!(U7680, u7680);
+    generate_conversion_tests!(U7744, u7744);
+    generate_conversion_tests!(U7808, u7808);
+    generate_conversion_tests!(U8192, u8192);
+    generate_conversion_tests!(U8256, u8256);
+    generate_conversion_tests!(U8320, u8320);
+    generate_conversion_tests!(U12416, u12416);
+    generate_conversion_tests!(U15360, u15360);
+    generate_conversion_tests!(U15424, u15424);
+    generate_conversion_tests!(U15488, u15488);
+    generate_conversion_tests!(U16384, u16384);
+    generate_conversion_tests!(U16448, u16448);
+    generate_conversion_tests!(U16512, u16512);
+    generate_conversion_tests!(U30720, u30720);
+    generate_conversion_tests!(U30784, u30784);
+    generate_conversion_tests!(U30848, u30848);
+    generate_conversion_tests!(U32896, u32896);
+    generate_conversion_tests!(U61568, u61568);
+  }
+  mod codec {
+    generate_codec_tests!(U192, u192);
+    generate_codec_tests!(U256, u256);
+    generate_codec_tests!(U320, u320);
+    generate_codec_tests!(U384, u384);
+    generate_codec_tests!(U448, u448);
+    generate_codec_tests!(U512, u512);
+    generate_codec_tests!(U576, u576);
+    generate_codec_tests!(U640, u640);
+    generate_codec_tests!(U704, u704);
+    generate_codec_tests!(U768, u768);
+    generate_codec_tests!(U832, u832);
+    generate_codec_tests!(U896, u896);
+    generate_codec_tests!(U1024, u1024);
+    generate_codec_tests!(U1088, u1088);
+    generate_codec_tests!(U1152, u1152);
+    generate_codec_tests!(U1216, u1216);
+    generate_codec_tests!(U1280, u1280);
+    generate_codec_tests!(U1664, u1664);
+    generate_codec_tests!(U2048, u2048);
+    generate_codec_tests!(U2112, u2112);
+    generate_codec_tests!(U2176, u2176);
+    generate_codec_tests!(U2432, u2432);
+    generate_codec_tests!(U3072, u3072);
+    generate_codec_tests!(U3136, u3136);
+    generate_codec_tests!(U3200, u3200);
+    generate_codec_tests!(U4096, u4096);
+    generate_codec_tests!(U4160, u4160);
+    generate_codec_tests!(U4224, u4224);
+    generate_codec_tests!(U6144, u6144);
+    generate_codec_tests!(U6208, u6208);
+    generate_codec_tests!(U6272, u6272);
+    generate_codec_tests!(U7680, u7680);
+    generate_codec_tests!(U7744, u7744);
+    generate_codec_tests!(U7808, u7808);
+    generate_codec_tests!(U8192, u8192);
+    generate_codec_tests!(U8256, u8256);
+    generate_codec_tests!(U8320, u8320);
+    generate_codec_tests!(U12416, u12416);
+    generate_codec_tests!(U15360, u15360);
+    generate_codec_tests!(U15424, u15424);
+    generate_codec_tests!(U15488, u15488);
+    generate_codec_tests!(U16384, u16384);
+    generate_codec_tests!(U16448, u16448);
+    generate_codec_tests!(U16512, u16512);
+    generate_codec_tests!(U30720, u30720);
+    generate_codec_tests!(U30784, u30784);
+    generate_codec_tests!(U30848, u30848);
+    generate_codec_tests!(U32896, u32896);
+    generate_codec_tests!(U61568, u61568);
+  }
+  mod cmp {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_cmp_tests!(U192, u192);
+    generate_cmp_tests!(U256, u256);
+    generate_cmp_tests!(U320, u320);
+    generate_cmp_tests!(U384, u384);
+    generate_cmp_tests!(U448, u448);
+    generate_cmp_tests!(U512, u512);
+    generate_cmp_tests!(U576, u576);
+    generate_cmp_tests!(U640, u640);
+    generate_cmp_tests!(U704, u704);
+    generate_cmp_tests!(U768, u768);
+    generate_cmp_tests!(U832, u832);
+    generate_cmp_tests!(U896, u896);
+    generate_cmp_tests!(U1024, u1024);
+    generate_cmp_tests!(U1088, u1088);
+    generate_cmp_tests!(U1152, u1152);
+    generate_cmp_tests!(U1216, u1216);
+    generate_cmp_tests!(U1280, u1280);
+    generate_cmp_tests!(U1664, u1664);
+    generate_cmp_tests!(U2048, u2048);
+    generate_cmp_tests!(U2112, u2112);
+    generate_cmp_tests!(U2176, u2176);
+    generate_cmp_tests!(U2432, u2432);
+    generate_cmp_tests!(U3072, u3072);
+    generate_cmp_tests!(U3136, u3136);
+    generate_cmp_tests!(U3200, u3200);
+    generate_cmp_tests!(U4096, u4096);
+    generate_cmp_tests!(U4160, u4160);
+    generate_cmp_tests!(U4224, u4224);
+    generate_cmp_tests!(U6144, u6144);
+    generate_cmp_tests!(U6208, u6208);
+    generate_cmp_tests!(U6272, u6272);
+    generate_cmp_tests!(U7680, u7680);
+    generate_cmp_tests!(U7744, u7744);
+    generate_cmp_tests!(U7808, u7808);
+    generate_cmp_tests!(U8192, u8192);
+    generate_cmp_tests!(U8256, u8256);
+    generate_cmp_tests!(U8320, u8320);
+    generate_cmp_tests!(U12416, u12416);
+    generate_cmp_tests!(U15360, u15360);
+    generate_cmp_tests!(U15424, u15424);
+    generate_cmp_tests!(U15488, u15488);
+    generate_cmp_tests!(U16384, u16384);
+    generate_cmp_tests!(U16448, u16448);
+    generate_cmp_tests!(U16512, u16512);
+    generate_cmp_tests!(U30720, u30720);
+    generate_cmp_tests!(U30784, u30784);
+    generate_cmp_tests!(U30848, u30848);
+    generate_cmp_tests!(U32896, u32896);
+    generate_cmp_tests!(U61568, u61568);
+  }
+  mod sub {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_sub_tests!(U192, u192);
+    generate_sub_tests!(U256, u256);
+    generate_sub_tests!(U320, u320);
+    generate_sub_tests!(U384, u384);
+    generate_sub_tests!(U448, u448);
+    generate_sub_tests!(U512, u512);
+    generate_sub_tests!(U576, u576);
+    generate_sub_tests!(U640, u640);
+    generate_sub_tests!(U704, u704);
+    generate_sub_tests!(U768, u768);
+    generate_sub_tests!(U832, u832);
+    generate_sub_tests!(U896, u896);
+    generate_sub_tests!(U1024, u1024);
+    generate_sub_tests!(U1088, u1088);
+    generate_sub_tests!(U1152, u1152);
+    generate_sub_tests!(U1216, u1216);
+    generate_sub_tests!(U1280, u1280);
+    generate_sub_tests!(U1664, u1664);
+    generate_sub_tests!(U2048, u2048);
+    generate_sub_tests!(U2112, u2112);
+    generate_sub_tests!(U2176, u2176);
+    generate_sub_tests!(U2432, u2432);
+    generate_sub_tests!(U3072, u3072);
+    generate_sub_tests!(U3136, u3136);
+    generate_sub_tests!(U3200, u3200);
+    generate_sub_tests!(U4096, u4096);
+    generate_sub_tests!(U4160, u4160);
+    generate_sub_tests!(U4224, u4224);
+    generate_sub_tests!(U6144, u6144);
+    generate_sub_tests!(U6208, u6208);
+    generate_sub_tests!(U6272, u6272);
+    generate_sub_tests!(U7680, u7680);
+    generate_sub_tests!(U7744, u7744);
+    generate_sub_tests!(U7808, u7808);
+    generate_sub_tests!(U8192, u8192);
+    generate_sub_tests!(U8256, u8256);
+    generate_sub_tests!(U8320, u8320);
+    generate_sub_tests!(U12416, u12416);
+    generate_sub_tests!(U15360, u15360);
+    generate_sub_tests!(U15424, u15424);
+    generate_sub_tests!(U15488, u15488);
+    generate_sub_tests!(U16384, u16384);
+    generate_sub_tests!(U16448, u16448);
+    generate_sub_tests!(U16512, u16512);
+    generate_sub_tests!(U30720, u30720);
+    generate_sub_tests!(U30784, u30784);
+    generate_sub_tests!(U30848, u30848);
+    generate_sub_tests!(U32896, u32896);
+    generate_sub_tests!(U61568, u61568);
+  }
+  mod shiftl {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_shiftl_tests!(U192, u192);
+    generate_shiftl_tests!(U256, u256);
+    generate_shiftl_tests!(U320, u320);
+    generate_shiftl_tests!(U384, u384);
+    generate_shiftl_tests!(U448, u448);
+    generate_shiftl_tests!(U512, u512);
+    generate_shiftl_tests!(U576, u576);
+    generate_shiftl_tests!(U640, u640);
+    generate_shiftl_tests!(U704, u704);
+    generate_shiftl_tests!(U768, u768);
+    generate_shiftl_tests!(U832, u832);
+    generate_shiftl_tests!(U896, u896);
+    generate_shiftl_tests!(U1024, u1024);
+    generate_shiftl_tests!(U1088, u1088);
+    generate_shiftl_tests!(U1152, u1152);
+    generate_shiftl_tests!(U1216, u1216);
+    generate_shiftl_tests!(U1280, u1280);
+    generate_shiftl_tests!(U1664, u1664);
+    generate_shiftl_tests!(U2048, u2048);
+    generate_shiftl_tests!(U2112, u2112);
+    generate_shiftl_tests!(U2176, u2176);
+    generate_shiftl_tests!(U2432, u2432);
+    generate_shiftl_tests!(U3072, u3072);
+    generate_shiftl_tests!(U3136, u3136);
+    generate_shiftl_tests!(U3200, u3200);
+    generate_shiftl_tests!(U4096, u4096);
+    generate_shiftl_tests!(U4160, u4160);
+    generate_shiftl_tests!(U4224, u4224);
+    generate_shiftl_tests!(U6144, u6144);
+    generate_shiftl_tests!(U6208, u6208);
+    generate_shiftl_tests!(U6272, u6272);
+    generate_shiftl_tests!(U7680, u7680);
+    generate_shiftl_tests!(U7744, u7744);
+    generate_shiftl_tests!(U7808, u7808);
+    generate_shiftl_tests!(U8192, u8192);
+    generate_shiftl_tests!(U8256, u8256);
+    generate_shiftl_tests!(U8320, u8320);
+    generate_shiftl_tests!(U12416, u12416);
+    generate_shiftl_tests!(U15360, u15360);
+    generate_shiftl_tests!(U15424, u15424);
+    generate_shiftl_tests!(U15488, u15488);
+    generate_shiftl_tests!(U16384, u16384);
+    generate_shiftl_tests!(U16448, u16448);
+    generate_shiftl_tests!(U16512, u16512);
+    generate_shiftl_tests!(U30720, u30720);
+    generate_shiftl_tests!(U30784, u30784);
+    generate_shiftl_tests!(U30848, u30848);
+    generate_shiftl_tests!(U32896, u32896);
+    generate_shiftl_tests!(U61568, u61568);
+  }
+  mod shiftr {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_shiftr_tests!(U192, u192);
+    generate_shiftr_tests!(U256, u256);
+    generate_shiftr_tests!(U320, u320);
+    generate_shiftr_tests!(U384, u384);
+    generate_shiftr_tests!(U448, u448);
+    generate_shiftr_tests!(U512, u512);
+    generate_shiftr_tests!(U576, u576);
+    generate_shiftr_tests!(U640, u640);
+    generate_shiftr_tests!(U704, u704);
+    generate_shiftr_tests!(U768, u768);
+    generate_shiftr_tests!(U832, u832);
+    generate_shiftr_tests!(U896, u896);
+    generate_shiftr_tests!(U1024, u1024);
+    generate_shiftr_tests!(U1088, u1088);
+    generate_shiftr_tests!(U1152, u1152);
+    generate_shiftr_tests!(U1216, u1216);
+    generate_shiftr_tests!(U1280, u1280);
+    generate_shiftr_tests!(U1664, u1664);
+    generate_shiftr_tests!(U2048, u2048);
+    generate_shiftr_tests!(U2112, u2112);
+    generate_shiftr_tests!(U2176, u2176);
+    generate_shiftr_tests!(U2432, u2432);
+    generate_shiftr_tests!(U3072, u3072);
+    generate_shiftr_tests!(U3136, u3136);
+    generate_shiftr_tests!(U3200, u3200);
+    generate_shiftr_tests!(U4096, u4096);
+    generate_shiftr_tests!(U4160, u4160);
+    generate_shiftr_tests!(U4224, u4224);
+    generate_shiftr_tests!(U6144, u6144);
+    generate_shiftr_tests!(U6208, u6208);
+    generate_shiftr_tests!(U6272, u6272);
+    generate_shiftr_tests!(U7680, u7680);
+    generate_shiftr_tests!(U7744, u7744);
+    generate_shiftr_tests!(U7808, u7808);
+    generate_shiftr_tests!(U8192, u8192);
+    generate_shiftr_tests!(U8256, u8256);
+    generate_shiftr_tests!(U8320, u8320);
+    generate_shiftr_tests!(U12416, u12416);
+    generate_shiftr_tests!(U15360, u15360);
+    generate_shiftr_tests!(U15424, u15424);
+    generate_shiftr_tests!(U15488, u15488);
+    generate_shiftr_tests!(U16384, u16384);
+    generate_shiftr_tests!(U16448, u16448);
+    generate_shiftr_tests!(U16512, u16512);
+    generate_shiftr_tests!(U30720, u30720);
+    generate_shiftr_tests!(U30784, u30784);
+    generate_shiftr_tests!(U30848, u30848);
+    generate_shiftr_tests!(U32896, u32896);
+    generate_shiftr_tests!(U61568, u61568);
+  }
+  mod add {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_add_tests!(U192, u192, U256);
+    generate_add_tests!(U256, u256, U320);
+    generate_add_tests!(U320, u320, U384);
+    generate_add_tests!(U384, u384, U448);
+    generate_add_tests!(U448, u448, U512);
+    generate_add_tests!(U512, u512, U576);
+    generate_add_tests!(U576, u576, U640);
+    generate_add_tests!(U640, u640, U704);
+    generate_add_tests!(U832, u832, U896);
+    generate_add_tests!(U1024, u1024, U1088);
+    generate_add_tests!(U1088, u1088, U1152);
+    generate_add_tests!(U1216, u1216, U1280);
+    generate_add_tests!(U2048, u2048, U2112);
+    generate_add_tests!(U2112, u2112, U2176);
+    generate_add_tests!(U3072, u3072, U3136);
+    generate_add_tests!(U3136, u3136, U3200);
+    generate_add_tests!(U4096, u4096, U4160);
+    generate_add_tests!(U4160, u4160, U4224);
+    generate_add_tests!(U6208, u6208, U6272);
+    generate_add_tests!(U7680, u7680, U7744);
+    generate_add_tests!(U7744, u7744, U7808);
+    generate_add_tests!(U8192, u8192, U8256);
+    generate_add_tests!(U8256, u8256, U8320);
+    generate_add_tests!(U15360, u15360, U15424);
+    generate_add_tests!(U15424, u15424, U15488);
+    generate_add_tests!(U16448, u16448, U16512);
+    generate_add_tests!(U30784, u30784, U30848);
+  }
+  mod mul {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_mul_tests!(U192, u192, U384);
+    generate_mul_tests!(U256, u256, U512);
+    generate_mul_tests!(U320, u320, U640);
+    generate_mul_tests!(U384, u384, U768);
+    generate_mul_tests!(U448, u448, U896);
+    generate_mul_tests!(U512, u512, U1024);
+    generate_mul_tests!(U576, u576, U1152);
+    generate_mul_tests!(U640, u640, U1280);
+    generate_mul_tests!(U832, u832, U1664);
+    generate_mul_tests!(U1024, u1024, U2048);
+    generate_mul_tests!(U1088, u1088, U2176);
+    generate_mul_tests!(U1216, u1216, U2432);
+    generate_mul_tests!(U2048, u2048, U4096);
+    generate_mul_tests!(U2112, u2112, U4224);
+    generate_mul_tests!(U3072, u3072, U6144);
+    generate_mul_tests!(U3136, u3136, U6272);
+    generate_mul_tests!(U4096, u4096, U8192);
+    generate_mul_tests!(U4160, u4160, U8320);
+    generate_mul_tests!(U6208, u6208, U12416);
+    generate_mul_tests!(U7680, u7680, U15360);
+    generate_mul_tests!(U7744, u7744, U15488);
+    generate_mul_tests!(U8192, u8192, U16384);
+    generate_mul_tests!(U8256, u8256, U16512);
+    generate_mul_tests!(U15360, u15360, U30720);
+    generate_mul_tests!(U15424, u15424, U30848);
+    generate_mul_tests!(U16448, u16448, U32896);
+    generate_mul_tests!(U30784, u30784, U61568);
+  }
+  mod div {
+    use super::super::*;
+    use testing::run_test;
+
+    generate_div_tests!(U192, u192);
+    generate_div_tests!(U256, u256);
+    generate_div_tests!(U320, u320);
+    generate_div_tests!(U384, u384);
+    generate_div_tests!(U448, u448);
+    generate_div_tests!(U512, u512);
+    generate_div_tests!(U576, u576);
+    generate_div_tests!(U640, u640);
+    generate_div_tests!(U832, u832);
+    generate_div_tests!(U1024, u1024);
+    generate_div_tests!(U1088, u1088);
+    generate_div_tests!(U1216, u1216);
+    generate_div_tests!(U2048, u2048);
+    generate_div_tests!(U2112, u2112);
+    generate_div_tests!(U3072, u3072);
+    generate_div_tests!(U3136, u3136);
+    generate_div_tests!(U4096, u4096);
+    generate_div_tests!(U4160, u4160);
+    generate_div_tests!(U6208, u6208);
+    generate_div_tests!(U7680, u7680);
+    generate_div_tests!(U7744, u7744);
+    generate_div_tests!(U8192, u8192);
+    generate_div_tests!(U8256, u8256);
+    generate_div_tests!(U15360, u15360);
+    generate_div_tests!(U15424, u15424);
+    generate_div_tests!(U16448, u16448);
+    generate_div_tests!(U30784, u30784);
   }
 }

src/unsigned/mod.rs

@@ -35,6 +35,8 @@ use std::ops::{Sub,SubAssign};
 
 #[cfg(test)]
 use std::fmt;
+#[cfg(test)]
+use quickcheck::{Arbitrary,Gen};
 
 macro_rules! generate_number
 {

src/unsigned/mul.rs

@@ -63,3 +63,25 @@ macro_rules! multiply_impls {
         }
     };
 }
+
+#[cfg(test)]
+macro_rules! generate_mul_tests
+{
+    ($name: ident, $lname: ident, $dbl: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/mul/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 3, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, bbytes) = case.get("b").unwrap();
+                let (neg2, cbytes) = case.get("c").unwrap();
+                assert!(!neg0 && !neg1 && !neg2);
+
+                let a = $name::from_bytes(abytes);
+                let b = $name::from_bytes(bbytes);
+                let c = $dbl::from_bytes(cbytes);
+                assert_eq!(c, &a * &b);
+            });
+        }
+    };
+}

src/unsigned/shifts.rs

@@ -89,4 +89,44 @@ macro_rules! shift_impls
     }
 }
 
-//shift_impls!(U192,   3);
+#[cfg(test)]
+macro_rules! generate_shiftl_tests {
+    ($name: ident, $lname: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/shiftl/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 3, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, lbytes) = case.get("l").unwrap();
+                let (neg2, rbytes) = case.get("r").unwrap();
+                assert!(!neg0 && !neg1 && !neg2);
+
+                let a = $name::from_bytes(abytes);
+                let l = $name::from_bytes(lbytes);
+                let r = $name::from_bytes(rbytes);
+                assert_eq!(r, a << usize::from(l));
+            });
+        }
+    };
+}
+
+#[cfg(test)]
+macro_rules! generate_shiftr_tests {
+    ($name: ident, $lname: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/shiftr/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 3, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, lbytes) = case.get("l").unwrap();
+                let (neg2, rbytes) = case.get("r").unwrap();
+                assert!(!neg0 && !neg1 && !neg2);
+
+                let a = $name::from_bytes(abytes);
+                let l = $name::from_bytes(lbytes);
+                let r = $name::from_bytes(rbytes);
+                assert_eq!(r, a >> usize::from(l));
+            });
+        }
+    };
+}

src/unsigned/sub.rs

@@ -1,13 +1,13 @@
 use unsigned::add::unsafe_addition;
 
-pub fn subtract(res: &mut [u64], spare: &mut [u64], other: &[u64])
+pub fn subtract(res: &mut [u64], spare: &mut [u64], other: &mut [u64])
 {
     for i in 0..res.len() {
-        res[i] = !res[i];
+        other[i] = !other[i];
     }
     spare[0] = 1;
-    unsafe_addition(res, &spare);
+    unsafe_addition(other, &spare, true);
-    unsafe_addition(res, &other);
+    unsafe_addition(res,   &other, true);
 }
 
 macro_rules! subtraction_impls
@@ -16,14 +16,14 @@ macro_rules! subtraction_impls
         impl SubAssign for $name {
             fn sub_assign(&mut self, rhs: $name) {
                 let mut temp = [0; $size];
-                subtract(&mut self.value, &mut temp, &rhs.value);
+                subtract(&mut self.value, &mut temp, &mut rhs.value.clone());
             }
         }
 
         impl<'a> SubAssign<&'a $name> for $name {
             fn sub_assign(&mut self, rhs: &$name) {
                 let mut temp = [0; $size];
-                subtract(&mut self.value, &mut temp, &rhs.value);
+                subtract(&mut self.value, &mut temp, &mut rhs.value.clone());
             }
         }
 
@@ -31,9 +31,9 @@ macro_rules! subtraction_impls
             type Output = $name;
 
             fn sub(self, rhs: $name) -> $name {
-                let mut res  = $name::zero();
+                let mut res  = self.clone();
                 let mut temp = [0; $size];
-                subtract(&mut res.value, &mut temp, &rhs.value);
+                subtract(&mut res.value, &mut temp, &mut rhs.value.clone());
                 res
             }
         }
@@ -42,9 +42,9 @@ macro_rules! subtraction_impls
             type Output = $name;
 
             fn sub(self, rhs: $name) -> $name {
-                let mut res  = $name::zero();
+                let mut res  = self.clone();
                 let mut temp = [0; $size];
-                subtract(&mut res.value, &mut temp, &rhs.value);
+                subtract(&mut res.value, &mut temp, &mut rhs.value.clone());
                 res
             }
         }
@@ -53,9 +53,9 @@ macro_rules! subtraction_impls
             type Output = $name;
 
             fn sub(self, rhs: &$name) -> $name {
-                let mut res  = $name::zero();
+                let mut res  = self.clone();
                 let mut temp = [0; $size];
-                subtract(&mut res.value, &mut temp, &rhs.value);
+                subtract(&mut res.value, &mut temp, &mut rhs.value.clone());
                 res
             }
         }
@@ -64,13 +64,32 @@ macro_rules! subtraction_impls
             type Output = $name;
 
             fn sub(self, rhs: &$name) -> $name {
-                let mut res  = $name::zero();
+                let mut res  = self.clone();
                 let mut temp = [0; $size];
-                subtract(&mut res.value, &mut temp, &rhs.value);
+                subtract(&mut res.value, &mut temp, &mut rhs.value.clone());
                 res
             }
         }
     }
 }
 
-//subtraction_impls!(U192,   3);
+#[cfg(test)]
+macro_rules! generate_sub_tests {
+    ($name: ident, $lname: ident) => {
+        #[test]
+        fn $lname() {
+            let fname = format!("testdata/sub/{}.tests", stringify!($name));
+            run_test(fname.to_string(), 3, |case| {
+                let (neg0, abytes) = case.get("a").unwrap();
+                let (neg1, bbytes) = case.get("b").unwrap();
+                let (neg2, cbytes) = case.get("c").unwrap();
+                assert!(!neg0 && !neg1 && !neg2);
+
+                let a = $name::from_bytes(abytes);
+                let b = $name::from_bytes(bbytes);
+                let c = $name::from_bytes(cbytes);
+                assert_eq!(c, a - b);
+            });
+        }
+    };
+}