From ed023be1fd7db5e6fb5e5f64e818e104478f830e Mon Sep 17 00:00:00 2001
From: kalmar <kalmar@amu.edu.pl>
Date: Tue, 11 Jul 2017 16:00:50 +0200
Subject: [PATCH] zero the array where product of X and Y is stored

---
 src/GroupRings.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/GroupRings.jl b/src/GroupRings.jl
index 312a385..318870f 100644
--- a/src/GroupRings.jl
+++ b/src/GroupRings.jl
@@ -318,6 +318,7 @@ end
 
 function mul!{T}(result::AbstractVector{T}, X::AbstractVector{T}, Y::AbstractVector{T}, pm::Array{Int,2})
    z = zero(T)
+   result .= z
    for (j,y) in enumerate(Y)
       if y != z
          for (i, index) in enumerate(pm[:,j])