kalmar/GroupRings.jl
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relax assumptions on coeffs<:Numbers

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kalmarek 2019-06-28 09:11:26 +02:00
parent 1f205d0f4a
commit 4bebf0df5d
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1 changed files with 15 additions and 15 deletions
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30
src/GroupRings.jl
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@ -98,7 +98,7 @@ import Base.promote_rule
promote_rule(::Type{GroupRingElem{T}}, ::Type{GroupRingElem{S}}) where {T,S} =
GroupRingElem{promote_type(T,S)}
function convert(::Type{T}, X::GroupRingElem) where {T<:Number}
function convert(::Type{T}, X::GroupRingElem) where T<:Number
return GroupRingElem(Vector{T}(X.coeffs), parent(X))
end
@ -156,7 +156,7 @@ end
# keep storage type
function (RG::GroupRing)(x::AbstractVector{T}) where T<:Number
function (RG::GroupRing)(x::AbstractVector{T}) where T
isdefined(RG, :basis) || throw("Basis of GroupRing not defined. For advanced use the direct constructor of GroupRingElem is provided.")
length(x) == length(RG.basis) || throw("Can not coerce to $RG: lengths differ")
return GroupRingElem(x, RG)
@ -288,15 +288,15 @@ end
(-)(X::GroupRingElem) = GroupRingElem(-X.coeffs, parent(X))
function mul!(a::T, X::GroupRingElem{T}) where {T<:Number}
function mul!(a::T, X::GroupRingElem{T}) where T
X.coeffs .*= a
return X
end
mul(a::T, X::GroupRingElem{T}) where {T<:Number} = GroupRingElem(a*X.coeffs, parent(X))
mul(a::T, X::GroupRingElem{T}) where T = GroupRingElem(a*X.coeffs, parent(X))
function mul(a::T, X::GroupRingElem{S}) where {T<:Number, S<:Number}
TT = promote_type(T,S)
function mul(a::T, X::GroupRingElem{S}) where {T<:Number, S}
TT = promote_type(T,S)
TT == S || @warn("Scalar and coeffs are in different rings! Promoting result to $(TT)")
return GroupRingElem(a.*X.coeffs, parent(X))
end
@ -343,9 +343,9 @@ end
fmac!(result::AbstractVector{T},
X::AbstractVector,
Y::AbstractVector,
pm::Array{Int,2}) where {T<:Number}
pm::Array{Int,2}) where T
> Fused multiply-add for group ring coeffs using multiplication table `pm`.
> The result of X*Y in GroupRing is added in-place to `result`.
> The result of X*Y in GroupRing is added in-place to `result`.
> Notes:
> * this method will silently produce false results if `X[k]` is non-zero for
> `k > size(pm,1)`.
@ -357,11 +357,11 @@ end
function fmac!(result::AbstractVector{T},
X::AbstractVector,
Y::AbstractVector,
pm::Array{Int,2}) where {T<:Number}
pm::Array{Int,2}) where T
z = zero(T)
s1 = size(pm,1)
s2 = size(pm,2)
@inbounds for j in 1:s2
if Y[j] != z
for i in 1:s1
@ -376,7 +376,7 @@ end
@doc doc"""
GRmul!(result::AbstractVector{T}, X::AbstractVector, Y::AbstractVector,
pm::Matrix{<:Integer}) where {T<:Number}
pm::Matrix{<:Integer}) where T
> The most specialised multiplication for `X` and `Y` (intended for `coeffs` of
> `GroupRingElems`), using multiplication table `pm`.
> Notes:
@ -389,7 +389,7 @@ end
function GRmul!(result::AbstractVector{T},
X::AbstractVector,
Y::AbstractVector,
pm::AbstractMatrix{<:Integer}) where {T<:Number}
pm::AbstractMatrix{<:Integer}) where T
z = zero(T)
result .= z
@ -451,7 +451,7 @@ function mul!(result::GroupRingElem, X::GroupRingElem, Y::GroupRingElem)
return result
end
function *(X::GroupRingElem{T}, Y::GroupRingElem{T}, check::Bool=true) where {T<:Number}
function *(X::GroupRingElem{T}, Y::GroupRingElem{T}, check::Bool=true) where T
if check
parent(X) == parent(Y) || throw("Elements don't seem to belong to the same Group Ring!")
end
@ -465,7 +465,7 @@ function *(X::GroupRingElem{T}, Y::GroupRingElem{T}, check::Bool=true) where {T<
return result
end
function *(X::GroupRingElem{T}, Y::GroupRingElem{S}, check::Bool=true) where {T<:Number, S<:Number}
function *(X::GroupRingElem{T}, Y::GroupRingElem{S}, check::Bool=true) where {T,S}
if check
parent(X) == parent(Y) || throw("Elements don't seem to belong to the same Group Ring!")
end
@ -561,7 +561,7 @@ end
function complete!(RG::GroupRing)
isdefined(RG, :basis) || throw(ArgumentError("Provide basis for completion first!"))
if !isdefined(RG, :pm)
if !isdefined(RG, :pm)
initializepm!(RG, fill=false)
return RG
end