From 4d358154267ef73dff3ddf159d2a72e3e967ec59 Mon Sep 17 00:00:00 2001
From: Josh Stone <cuviper@gmail.com>
Date: Sun, 22 Oct 2017 15:28:59 -0700
Subject: [PATCH] bigint::monty: simplify work space allocation

---
 bigint/src/monty.rs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/bigint/src/monty.rs b/bigint/src/monty.rs
index 8960c70..da352ed 100644
--- a/bigint/src/monty.rs
+++ b/bigint/src/monty.rs
@@ -1,4 +1,3 @@
-use std::iter::repeat;
 use integer::Integer;
 use traits::{Zero, One};
 
@@ -62,11 +61,9 @@ fn monty_redc(a: BigUint, mr: &MontyReducer) -> BigUint {
     let mut c = a.data;
     let n = &mr.n;
     let n_size = n.len();
-    let old_size = c.len();
 
     // Allocate sufficient work space
-    c.reserve(2*n_size+2-old_size);
-    c.extend(repeat(0).take(2*n_size+2-old_size));
+    c.resize(2 * n_size + 2, 0);
 
     // β is the size of a word, in this case 32 bits. So "a mod β" is
     // equivalent to masking a to 32 bits.