kalmar/GroupRings.jl
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exact division is still TODO

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kalmarek 2019-06-04 22:50:00 +02:00
parent 194cdf64eb
commit 5b923dfe4c
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16
src/ncring_interface.jl
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@ -121,6 +121,22 @@ function ==(A::GroupRing, B::GroupRing)
end
end
###############################################################################
#
# Exact Division (TODO)
#
###############################################################################
function AbstractAlgebra.divexact_left(X::GroupRingElem, Y::GroupRingElem)
isunit(Y) || throw(DivideError())
return inv(Y)*X
end
function AbstractAlgebra.divexact_right(X::GroupRingElem, Y::GroupRingElem)
isunit(Y) || throw(DivideError())
return X*inv(Y)
end
###############################################################################
#
# promotion, rand, isapprox