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copy in subs #100

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6 changes: 3 additions & 3 deletions src/subs.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -83,20 +83,20 @@ end

_subs(st, ::PolyVar, vals) = monoeval([1], vals::AbstractVector)
_subs(st, m::Monomial, vals) = monoeval(m.z, vals::AbstractVector)
_subs(st, t::Term, vals) = t.α * monoeval(t.x.z, vals::AbstractVector)
_subs(st, t::Term, vals) = MA.copy_if_mutable(t.α) * monoeval(t.x.z, vals::AbstractVector)
function _subs(::MP.Eval, p::Polynomial{C, T}, vals::AbstractVector{S}) where {C, T, S}
# I need to check for iszero otherwise I get : ArgumentError: reducing over an empty collection is not allowed
if iszero(p)
zero(Base.promote_op(*, S, T))
else
sum(i -> p.a[i] * monoeval(p.x.Z[i], vals), 1:length(p))
sum(i -> MA.copy_if_mutable(p.a[i]) * monoeval(p.x.Z[i], vals), 1:length(p))
end
end
function _subs(::MP.Subs, p::Polynomial{C, T}, vals::AbstractVector{S}) where {C, T, S}
Tout = MA.promote_operation(*, T, MP.coefficienttype(S))
q = zero_with_variables(Polynomial{C, Tout}, mergevars_of(PolyVar{C}, vals)[1])
for i in 1:length(p.a)
MA.mutable_operate!(+, q, p.a[i] * monoeval(p.x.Z[i], vals))
MA.mutable_operate!(+, q, MA.copy_if_mutable(p.a[i]) * monoeval(p.x.Z[i], vals))
end
return q
end
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