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Fix convert bug #320

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Fix convert bug #320

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9e2b88a
Fix convert(typeof(x), x)
dpsanders Aug 13, 2019
100eae4
Add test
dpsanders Aug 13, 2019
4be62a9
Add test of converting rational
dpsanders Aug 13, 2019
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2 changes: 1 addition & 1 deletion src/intervals/conversion.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ convert(::Type{Interval{T}}, x::Bool) where {T} = convert(Interval{T}, Int(x))
convert(::Type{Interval{T}}, x::Real) where {T} = atomic(Interval{T}, x)
convert(::Type{Interval{T}}, x::T) where {T<:Real} = Interval{T}(x)
convert(::Type{Interval{T}}, x::Interval{T}) where {T} = x
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Suggested change
convert(::Type{Interval{T}}, x::Interval{T}) where {T} = x
convert(::Type{Interval{T}}, x::Interval{T}) where {T<:Real} = x

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While I see your point, this would make the code harder to maintain if we change the parameter type constrain.

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You can add a constant and use that instead of Real.

const IT = Real  # type constraint of intervals

convert(::Type{Interval{T}}, x::Interval) where {T} = atomic(Interval{T}, x)
convert(::Type{Interval{T}}, x::Interval{S}) where {T,S} = atomic(Interval{T}, x)
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Suggested change
convert(::Type{Interval{T}}, x::Interval{S}) where {T,S} = atomic(Interval{T}, x)
convert(::Type{Interval{T}}, x::Interval) where {T<:Real} = atomic(Interval{T}, x)


convert(::Type{Interval}, x::Real) = (T = typeof(float(x)); convert(Interval{T}, x))
convert(::Type{Interval}, x::Interval) = x
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Not directly related to the issue, but this definition is the same as the one on line 20 and should probably be deleted (especially since the result would not be correct if for some weird reason it ever gets called).

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Sorry, I don't understand which definition you're talking about that is the same as the one on line 20?

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On line 23:

convert(::Type{Interval}, x::Interval) = x

Since Interval is the same as Interval{T} where {T} and nothing there requests both parameter to be the same.

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