From 494f2b65ad023d454f9011e472d2ea9a8e147e81 Mon Sep 17 00:00:00 2001
From: Brendan Zabarauskas <bjzaba@yahoo.com.au>
Date: Tue, 29 Sep 2015 18:36:41 +1000
Subject: [PATCH] Fix Quaternion::mul_self_q

Fixes #224

I haven't really thought about whether there is a faster way to do this, but at least it is fixed.
---
 src/quaternion.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/quaternion.rs b/src/quaternion.rs
index 3c241e6..76c59ca 100644
--- a/src/quaternion.rs
+++ b/src/quaternion.rs
@@ -138,8 +138,7 @@ impl<S: BaseFloat> Quaternion<S> {
     /// Multiply this quaternion by another, in-place.
     #[inline]
     pub fn mul_self_q(&mut self, q: &Quaternion<S>) {
-        self.s = self.s * q.s;
-        self.v.mul_self_v(&q.v);
+        *self = self.mul_q(q);
     }
 
     /// The dot product of the quaternion and `q`.