[Issue 14382] converting old D1 operator overloading style to new D2 style

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14382

--- Comment #1 from Ketmar Dark <ketmar at ketmar.no-ip.org> ---
Created attachment 1501
  --> https://issues.dlang.org/attachment.cgi?id=1501&action=edit
std.bigint fix

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