kalmar/GroupRings.jl
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(::GroupRing)() zero elt

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kalmar 2017-05-17 11:34:39 +02:00
parent ab0b6c871a
commit 933c578b8f
1 changed files with 5 additions and 0 deletions
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src/GroupRings.jl
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@ -83,6 +83,11 @@ end
#
###############################################################################
function (RG::GroupRing)(T::Type=Int)
isdefined(RG, :basis) || throw("Complete the definition of GroupRing first")
return GroupRingElem(spzeros(T,length(RG.basis)), RG)
end
function (A::GroupRing)(X::GroupRingElem)
length(X) == length(A.basis) || throw("Can not coerce to $A: lengths differ")
X.parent = A