[SR-7236] NSDecimalNumber `.intValue` reporting 0 on numbers with many decimals

[swift-ci]

Previous ID	SR-7236
Radar	rdar://problem/38665975
Original Reporter	stjernegard (JIRA User)
Type	Bug

Attachment: Download

Environment

Apple Swift version 4.0.3 (swiftlang-900.0.74.1 clang-900.0.39.2) on MacOS 10.13.3 (17D102)

Additional Detail from JIRA

| | | |------------------|-----------------| |Votes | 0 | |Component/s | Foundation | |Labels | Bug | |Assignee | None | |Priority | Medium | md5: 7432d38cca097fb412157a77bfeb51fe

duplicates:

• SR-2980 NSDecimalNumber's .intValue produces incorrect results for numbers with many numbers after the decimal place

is duplicated by:

• SR-2980 NSDecimalNumber's .intValue produces incorrect results for numbers with many numbers after the decimal place

Issue Description:

This is easily shown by running `NSDecimalNumber(value: 10).dividing(by: 3).intValue`. It will return 0, but the expected value is 3.

`NSDecimalNumber(value: 10).dividing(by: 3).doubleValue` correctly returns `3.3333333333333335`.

Running `NSDecimalNumber(value: 10).dividing(by: 3)` in the Swift CLI will show an assertion failure which I believe to be related. - Full text attached.

[belkadan]

The assertion is coming from LLDB, so I think that's unrelated.

@swift-ci create

[spevans]

Linux fix: https://github.com/apple/swift-corelibs-foundation/pull/2925

[xwu]

This remains a problem on macOS as of Swift 5.5 on Monterey, but that's a problem with the closed-source Foundation.