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Add copy(::UnivPoly) #2178

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Merged
merged 1 commit into from
Oct 2, 2025
Merged

Add copy(::UnivPoly) #2178

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2 changes: 2 additions & 0 deletions src/generic/UnivPoly.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -321,6 +321,8 @@ function deepcopy_internal(p::UnivPoly{T}, dict::IdDict) where {T}
return UnivPoly{T}(deepcopy_internal(data(p), dict), parent(p))
end

Base.copy(f::UnivPoly{T}) where {T} = UnivPoly{T}(copy(data(f)), parent(f))

###############################################################################
#
# Multivariate coefficients
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12 changes: 12 additions & 0 deletions test/generic/UnivPoly-test.jl
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Expand Up @@ -1144,26 +1144,38 @@ end
f1 = add!(f1, g, h)

@test f1 == g + h
@test f == 3x^3 + 2x^2 + x + 4

f2 = deepcopy(f)
f2 = add!(f2, g)

@test f2 == f + g
@test f == 3x^3 + 2x^2 + x + 4

f3 = deepcopy(f)
f3 = mul!(f3, g, h)

@test f3 == g*h
@test f == 3x^3 + 2x^2 + x + 4

f4 = deepcopy(f)
f4 = addmul!(f4, g, h)

@test f4 == f + g*h
@test f == 3x^3 + 2x^2 + x + 4

f5 = deepcopy(f)
f5 = zero!(f5)

@test f5 == 0
@test f == 3x^3 + 2x^2 + x + 4

# also verify `copy` works as intended
f6 = copy(f)
f6 = zero!(f6)

@test f6 == 0
@test f == 3x^3 + 2x^2 + x + 4
end
end

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