https://issues.dlang.org/show_bug.cgi?id=19740

--- Comment #1 from shove <shove@163.com> ---
*** Issue 19739 has been marked as a duplicate of this issue. ***

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https://issues.dlang.org/show_bug.cgi?id=19740

Vladimir Panteleev <dlang-bugzilla@thecybershadow.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86                         |All
                 OS|Mac OS X                    |All
           Severity|enhancement                 |regression

--- Comment #2 from Vladimir Panteleev <dlang-bugzilla@thecybershadow.net> ---
Regression, introduced in https://github.com/dlang/phobos/pull/5715

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https://issues.dlang.org/show_bug.cgi?id=19740

--- Comment #3 from Simen Kjaeraas <simen.kjaras@gmail.com> ---
Simpler numbers demonstrating the same issue:

a =
241127122100380210001001124020210001001100000200003101000062221012075223052000021042250111300200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
b =
70020000000050041832100040114001011000002200722143200000014102001132330110410406020210020045721000160014200000101224530010000111021520000000012000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Gives this result: 20000000001000003004000000120212100201000101001104000000010101000110200200000011011012010000010401100130020000041001002003000201010011124100010007220001471870730867315477594439355311694480948106052082286667289293612000561058058780959087178453367701487987704395450321365382687298205069039303066149854725490780100394780481552981630341618301661667399665774466232711496902529170260586056260480285668935821902794996073140454770961377671072882308072028734904868893098854793460359961494977497968219623527972133861047574462464

As we can see, the result should end in a number of 0s, but most definitely doesn't. There probably are even smaller numbers that exhibit the same issue.

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https://issues.dlang.org/show_bug.cgi?id=19740

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
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           Keywords|                            |pull

--- Comment #4 from Dlang Bot <dlang-bot@dlang.rocks> ---
@shove70 created dlang/phobos pull request #6965 "Fix #19740: Incorrect result of BigInt * BigInt" fixing this issue:

- Fixes #19740: Incorrect result of BigInt * BigInt

  Fix bug #19740: Incorrect result of BigInt * BigInt.

https://github.com/dlang/phobos/pull/6965

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https://issues.dlang.org/show_bug.cgi?id=19740

--- Comment #5 from shove <shove@163.com> ---
Reposition request resubmitted:

https://github.com/dlang/phobos/pull/6967

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https://issues.dlang.org/show_bug.cgi?id=19740

--- Comment #6 from shove <shove@163.com> ---
(In reply to shove from comment #5)
> Reposition request resubmitted:
> 
> https://github.com/dlang/phobos/pull/6967

Reposition request resubmitted: https://github.com/dlang/phobos/pull/6969

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https://issues.dlang.org/show_bug.cgi?id=19740

apham <apz28@hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |apz28@hotmail.com

--- Comment #7 from apham <apz28@hotmail.com> ---
For original sample on 2019-03-15 10:58:22 UTC, .NET BigInteger gives below result. So Python seem wrong?

16883721089480688747229011802283756823349870758229387365814728471518346136944894862961035756393632618073413910091006778604956808730652275328822700182498926542563654351871390166691461743896850906716336187966456064270200717632811001335602400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

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https://issues.dlang.org/show_bug.cgi?id=19740

shove <shove@163.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #8 from shove <shove@163.com> ---
Fixed:

https://github.com/dlang/phobos/pull/6972

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