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Added bug header.
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user31159
user31159

Bug introduced in 9.0 or earlier and persisting through 11.0.1 or later

From the Interval documentation:

For approximate machine- or arbitrary-precision numbers x, Interval[x] yields an interval reflecting the uncertainty in x.

$Version
(* 10.4.0 for Microsoft Windows (64-bit) (February 26, 2016) *)

Interval @ $MaxNumber === Uncompress @ Compress @ Interval @ $MaxNumber
(* True *)

IntervalMemberQ[Interval @ $MaxNumber, $MaxNumber]
(* True *)

IntervalMemberQ[Uncompress @ Compress @ Interval @ $MaxNumber, $MaxNumber]
(* False *)

What is going on here? What happens with the interval after the compress-uncompress round-trip?

From the Interval documentation:

For approximate machine- or arbitrary-precision numbers x, Interval[x] yields an interval reflecting the uncertainty in x.

$Version
(* 10.4.0 for Microsoft Windows (64-bit) (February 26, 2016) *)

Interval @ $MaxNumber === Uncompress @ Compress @ Interval @ $MaxNumber
(* True *)

IntervalMemberQ[Interval @ $MaxNumber, $MaxNumber]
(* True *)

IntervalMemberQ[Uncompress @ Compress @ Interval @ $MaxNumber, $MaxNumber]
(* False *)

What is going on here? What happens with the interval after the compress-uncompress round-trip?

Bug introduced in 9.0 or earlier and persisting through 11.0.1 or later

From the Interval documentation:

For approximate machine- or arbitrary-precision numbers x, Interval[x] yields an interval reflecting the uncertainty in x.

$Version
(* 10.4.0 for Microsoft Windows (64-bit) (February 26, 2016) *)

Interval @ $MaxNumber === Uncompress @ Compress @ Interval @ $MaxNumber
(* True *)

IntervalMemberQ[Interval @ $MaxNumber, $MaxNumber]
(* True *)

IntervalMemberQ[Uncompress @ Compress @ Interval @ $MaxNumber, $MaxNumber]
(* False *)

What is going on here? What happens with the interval after the compress-uncompress round-trip?

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Dr. belisarius
Dr. belisarius
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Vladimir Reshetnikov
Vladimir Reshetnikov
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A weird issue with Interval[$MaxNumber]

From the Interval documentation:

For approximate machine- or arbitrary-precision numbers x, Interval[x] yields an interval reflecting the uncertainty in x.

$Version
(* 10.4.0 for Microsoft Windows (64-bit) (February 26, 2016) *)

Interval @ $MaxNumber === Uncompress @ Compress @ Interval @ $MaxNumber
(* True *)

IntervalMemberQ[Interval @ $MaxNumber, $MaxNumber]
(* True *)

IntervalMemberQ[Uncompress @ Compress @ Interval @ $MaxNumber, $MaxNumber]
(* False *)

What is going on here? What happens with the interval after the compress-uncompress round-trip?