Fix clippy::precedence lints (#466)

Author: newpavlov

belt-block/src/consts.rs

@@ -174,7 +174,7 @@ mod tests {
             let mut h: [u32; 256] = [0u32; 256];
             for x in 0..256 {
                 let mut y: u32 = H[x] as u32;
-                y = y << r | y >> (32 - r);
+                y = (y << r) | (y >> (32 - r));
                 h[x] = y;
             }
             match r {

serpent/src/lib.rs

@@ -92,9 +92,9 @@ fn apply_s_bitslice(index: usize, [w1, w2, w3, w4]: Words) -> Words {
         let quad = apply_s(
             index,
             get_bit(w1 as usize, i)
-                | get_bit(w2 as usize, i) << 1
-                | get_bit(w3 as usize, i) << 2
-                | get_bit(w4 as usize, i) << 3,
+                | (get_bit(w2 as usize, i) << 1)
+                | (get_bit(w3 as usize, i) << 2)
+                | (get_bit(w4 as usize, i) << 3),
         );
 
         for l in 0..4 {
@@ -111,9 +111,9 @@ fn apply_s_inverse_bitslice(index: usize, [w1, w2, w3, w4]: Words) -> Words {
         let quad = apply_s_inverse(
             index,
             get_bit(w1 as usize, i)
-                | get_bit(w2 as usize, i) << 1
-                | get_bit(w3 as usize, i) << 2
-                | get_bit(w4 as usize, i) << 3,
+                | (get_bit(w2 as usize, i) << 1)
+                | (get_bit(w3 as usize, i) << 2)
+                | (get_bit(w4 as usize, i) << 3),
         );
         for l in 0..4 {
             words[l] |= u32::from(get_bit(quad as usize, l)) << i;
@@ -183,9 +183,9 @@ impl KeyInit for Serpent {
             // calculate keys in bitslicing mode
             for j in 0..32 {
                 let input = get_bit(a as usize, j)
-                    | get_bit(b as usize, j) << 1
-                    | get_bit(c as usize, j) << 2
-                    | get_bit(d as usize, j) << 3;
+                    | (get_bit(b as usize, j) << 1)
+                    | (get_bit(c as usize, j) << 2)
+                    | (get_bit(d as usize, j) << 3);
                 let output = apply_s(sbox_index, input);
                 for l in 0..4 {
                     k[4 * i + l] |= u32::from(get_bit(output as usize, l)) << j;

twofish/src/lib.rs

@@ -62,7 +62,7 @@ fn gf_mult(mut a: u8, mut b: u8, p: u8) -> u8 {
 
 // q_i sbox
 fn sbox(i: usize, x: u8) -> u8 {
-    let (a0, b0) = (x >> 4 & 15, x & 15);
+    let (a0, b0) = ((x >> 4) & 15, x & 15);
     let a1 = a0 ^ b0;
     let b1 = (a0 ^ ((b0 << 3) | (b0 >> 1)) ^ (a0 << 3)) & 15;
     let (a2, b2) = (QBOX[i][0][a1 as usize], QBOX[i][1][b1 as usize]);