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Add mpl_round_to_int #25207

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Merged
merged 1 commit into from
Feb 14, 2023
Merged

Add mpl_round_to_int #25207

merged 1 commit into from
Feb 14, 2023

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oscargus
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PR Summary

Most uses of mpl_round is casting back to int, so better keep the result as int. It may be possible that the compiler realizes that (int)(double)(int) should be simplified to (int) though...

PR Checklist

Documentation and Tests

  • Has pytest style unit tests (and pytest passes)
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).
  • New plotting related features are documented with examples.

Release Notes

  • New features are marked with a .. versionadded:: directive in the docstring and documented in doc/users/next_whats_new/
  • API changes are marked with a .. versionchanged:: directive in the docstring and documented in doc/api/next_api_changes/
  • Release notes conform with instructions in next_whats_new/README.rst or next_api_changes/README.rst

@oscargus oscargus added this to the v3.8.0 milestone Feb 12, 2023
inline double mpl_round(double v)
{
return (double)(int)(v + ((v >= 0.0) ? 0.5 : -0.5));
return (double)mpl_round_to_int(v);
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Is there a reason mpl_round doesn't work here? Does mpl_round handle 0.5 differently?

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mpl_round does (double)(int)... while mpl_round_to_int does (int).... So I thought that inlining it will avoid code duplication. It should be identical.

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Oh duh, this is mpl_round 🐑!

@jklymak jklymak merged commit bc25f74 into matplotlib:main Feb 14, 2023
@oscargus oscargus deleted the roundtoint branch February 21, 2023 07:36
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3 participants