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printf format specifier with zero padding behaves incorrectly for negative zero (-0.0) on .NET Core #15558

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jwosty opened this issue Jul 5, 2023 · 1 comment
Open

printf format specifier with zero padding behaves incorrectly for negative zero (-0.0) on .NET Core #15558

jwosty opened this issue Jul 5, 2023 · 1 comment
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Area-Library Issues for FSharp.Core not covered elsewhere Bug Impact-Low (Internal MS Team use only) Describes an issue with limited impact on existing code.
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Backlog

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@jwosty
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jwosty commented Jul 5, 2023 •
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printf formatting a value of -0.0 with %010f (or anything which adds some zero padding) incorrectly places the - symbol.

Expected behavior

sprintf "%010.3f" -0.0 should display -00000.000 sprintf "%010.3f" -0.0 should display 00000.000 (to match .NET Framework).

This works correctly for other negative values. For example, sprintf "%010.3f" -0.01 displays -00000.100.

Actual behavior

Displays 0000-0.000

Known workarounds

None known.

Related information

Potentially related to: #15557

  • macOS 12.6
  • .NET 6.0.15
@github-actions github-actions bot added this to the Backlog milestone Jul 5, 2023
@0101 0101 added Impact-Low (Internal MS Team use only) Describes an issue with limited impact on existing code. Area-Library Issues for FSharp.Core not covered elsewhere and removed Needs-Triage labels Jul 10, 2023
@jwosty jwosty mentioned this issue Dec 14, 2024
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@jwosty
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jwosty commented Dec 16, 2024

Noting here that this bug only affects FSharp.Core under .NET Core. See: #18147 (comment)

@jwosty jwosty changed the title printf format specifier with zero padding behaves incorrectly for negative zero (-0.0) printf format specifier with zero padding behaves incorrectly for negative zero (-0.0) on .NET Core Dec 16, 2024
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Area-Library Issues for FSharp.Core not covered elsewhere Bug Impact-Low (Internal MS Team use only) Describes an issue with limited impact on existing code.
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F# Compiler and Tooling
Status: New
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Backlog
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