IEEEReal.float_class does not match the Basis Library #71
Description
Version
110.99
Operating System
- All
- Linux
- macOS
- Windows
- Other Unix
OS Version
No response
Processor
Any
Component
Basis Library
Severity
Minor
Description of the problem
The Basis Library defines
datatype float_class
= NAN
| INF
| ZERO
| NORMAL
| SUBNORMAL
in https://smlfamily.github.io/Basis/ieee-float.html
In SML/NJ, the constructor NAN takes an argument:
datatype nan_mode = QUIET | SIGNALLING
datatype float_class = INF | NAN of nan_mode | NORMAL | SUBNORMAL | ZERODue to the difference with the NAN constructor it is not possible to write portable SML code.
Additional comments:
When using a implementation of REAL, the function class can be avoided by using functions isFinite, isNan, isNormal and comparison with zero instead.
Transcript
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Expected Behavior
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Steps to Reproduce
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Additional Information
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Email address
Comments from smlnj-gforge
Original smlnj-gforge bug number 315
Submitted via web form by Phil Clayton phil.clayton@lineone.net on 2022-06-29 at 15:50:00
Keywords: IEEEReal float_class NAN
comment by @JohnReppy on 2022-06-29 17:52:00 +000 UTC
This may have been a holdover from an earlier design of the Basis Library that was never updated in our implementation. I have fixed it for 110.99.3 and 2022.1.