From 48645a7b5cc0c8bee4fae18cf601a743556547c0 Mon Sep 17 00:00:00 2001
From: kalmar <kalmar@amu.edu.pl>
Date: Mon, 13 Mar 2017 10:28:49 +0100
Subject: [PATCH] Slightly faster algebra multiplication

---
 GroupAlgebras.jl | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/GroupAlgebras.jl b/GroupAlgebras.jl
index fc72c7c..12ebdd2 100644
--- a/GroupAlgebras.jl
+++ b/GroupAlgebras.jl
@@ -61,12 +61,12 @@ end
 
 function algebra_multiplication{T<:Number}(X::AbstractVector{T}, Y::AbstractVector{T}, pm::Array{Int,2})
     result = zeros(X)
-    for (i,x) in enumerate(X)
-        if x != 0
-            for (j, index) in enumerate(pm[i,:])
-                if Y[j] != 0
+    for (j,y) in enumerate(Y)
+        if y != zero(T)
+            for (i, index) in enumerate(pm[:,j])
+                if X[i] != zero(T)
                     index == 0 && throw(ArgumentError("The product don't seem to belong to the span of basis!"))
-                    result[index] += x*Y[j]
+                    result[index] += X[i]*y
                 end
             end
         end