fix clippy warnings (#72)

Author: srinathsetty

src/dense_mlpoly.rs

@@ -416,7 +416,7 @@ mod tests {
     // compute n = 2^\ell
     let n = ell.pow2();
     // compute m = sqrt(n) = 2^{\ell/2}
-    let m = n.square_root();
+    let m = (n as f64).sqrt() as usize;
 
     // compute vector-matrix product between L and Z viewed as a matrix
     let LZ = (0..m)
@@ -455,7 +455,7 @@ mod tests {
     let ell = r.len();
     assert!(ell % 2 == 0); // ensure ell is even
     let n = ell.pow2();
-    let m = n.square_root();
+    let m = (n as f64).sqrt() as usize;
 
     // compute row vector L
     for i in 0..m {

src/math.rs

@@ -1,16 +1,10 @@
 pub trait Math {
-  fn square_root(self) -> usize;
   fn pow2(self) -> usize;
   fn get_bits(self, num_bits: usize) -> Vec<bool>;
   fn log_2(self) -> usize;
 }
 
 impl Math for usize {
-  #[inline]
-  fn square_root(self) -> usize {
-    (self as f64).sqrt() as usize
-  }
-
   #[inline]
   fn pow2(self) -> usize {
     let base: usize = 2;

src/scalar/mod.rs

@@ -27,17 +27,10 @@ impl ScalarFromPrimitives for bool {
 
 pub trait ScalarBytesFromScalar {
   fn decompress_scalar(s: &Scalar) -> ScalarBytes;
-  fn decompress_vector(s: &[Scalar]) -> Vec<ScalarBytes>;
 }
 
 impl ScalarBytesFromScalar for Scalar {
   fn decompress_scalar(s: &Scalar) -> ScalarBytes {
     ScalarBytes::from_bytes_mod_order(s.to_bytes())
   }
-
-  fn decompress_vector(s: &[Scalar]) -> Vec<ScalarBytes> {
-    (0..s.len())
-      .map(|i| Scalar::decompress_scalar(&s[i]))
-      .collect::<Vec<ScalarBytes>>()
-  }
 }