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Bug in sum of large intervals #82

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dpsanders opened this issue Jun 30, 2017 · 1 comment
Closed

Bug in sum of large intervals #82

dpsanders opened this issue Jun 30, 2017 · 1 comment
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@dpsanders
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julia> Interval(prev_float(Inf), Inf) + Interval(prev_float(Inf), Inf)
ERROR: ArgumentError: Must satisfy `a < Inf` and `b > -Inf` to construct Interval(a, b).

It's trying to construct Interval(Inf, Inf).

This seems to be a bug with FastRounding, since

julia 0.6> setrounding(Interval, :slow)
:slow

julia 0.6> Interval(prevfloat(Inf), Inf) + Interval(prevfloat(Inf), Inf)
[1.79769e+308, ∞]
@dpsanders dpsanders added the bug label Jun 30, 2017
@dpsanders
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This seems to have been fixed by JeffreySarnoff/FastRounding.jl#12:

using FastRounding: prev_float

julia> Interval(prev_float(Inf), Inf) + Interval(prev_float(Inf), Inf)
[1.79769e+308, ∞]

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