From a00f0e3525d1d9911a03d2105737791d8e0de45c Mon Sep 17 00:00:00 2001
From: Eirik Ogilvie-Wigley <eirik@z.cash>
Date: Wed, 5 Sep 2018 14:47:11 -0600
Subject: [PATCH] Add benchmark for mul_assign

---
 benches/fq_bench.rs | 17 +++++++++++++++++
 src/fq.rs           |  4 ++++
 2 files changed, 21 insertions(+)
 create mode 100644 benches/fq_bench.rs

diff --git a/benches/fq_bench.rs b/benches/fq_bench.rs
new file mode 100644
index 0000000..0b47324
--- /dev/null
+++ b/benches/fq_bench.rs
@@ -0,0 +1,17 @@
+#![feature(test)]
+
+extern crate test;
+extern crate jubjub;
+
+use std::ops::MulAssign;
+use test::Bencher;
+use jubjub::Fq;
+
+#[bench]
+fn bench_mul_assign(bencher: &mut Bencher) {
+    let mut n = Fq::new([2, 2, 2, 2]);
+    let m = Fq::new([2, 2, 2, 2]);
+    bencher.iter(move || {
+        n.mul_assign(&m);
+    });
+}
diff --git a/src/fq.rs b/src/fq.rs
index bc68b9e..8cf905c 100644
--- a/src/fq.rs
+++ b/src/fq.rs
@@ -186,6 +186,10 @@ const R2: Fq = Fq([
 ]);
 
 impl Fq {
+    pub fn new(limbs: [u64; 4]) -> Fq {
+        Fq(limbs)
+    }
+
     pub fn zero() -> Fq {
         Fq([0, 0, 0, 0])
     }