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[SR-9610] Export swift_decompose_double(), swift_decompose_float(), swift_decompose_float80() and swift_format_exponential() from libswiftCore #52056

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norio-nomura opened this issue Jan 7, 2019 · 2 comments
Open

[SR-9610] Export swift_decompose_double(), swift_decompose_float(), swift_decompose_float80() and swift_format_exponential() from libswiftCore #52056

norio-nomura opened this issue Jan 7, 2019 · 2 comments
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improvement standard library Area: Standard library umbrella swift evolution proposal needed Flag → feature: A feature that warrants a Swift evolution proposal

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@norio-nomura
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Previous ID SR-9610
Radar None
Original Reporter @norio-nomura
Type Improvement
Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Improvement, swift-evolution-proposal-needed
Assignee None
Priority Medium

md5: 20a8fa26c183a2c50bde1cabf56949af

Issue Description:

Motivation:

Since Double.description, Float.description and Float80.description uses decimal format on some conditions, but it sometime needs to use exponential in another conditions.

Resolution:

If swift_decompose_double(), swift_decompose_float(), swift_decompose_float80() and swift_format_exponential() are exported from libswiftCore, floating point can be formatted in another conditions.

Currently, it needs to copy SwiftDtoa.h and SwiftDtoa.cpp to project that using them.
e.g: jpsim/Yams#151
@belkadan
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belkadan commented Jan 7, 2019

I think this would have to go through the Swift Evolution Process to choose appropriate names for the operations.

@norio-nomura
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I understand that "Swift Evolution Process" is necessary to realize this, but for me it feels that it requires too much effort. 🙁

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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improvement standard library Area: Standard library umbrella swift evolution proposal needed Flag → feature: A feature that warrants a Swift evolution proposal
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@norio-nomura @belkadan