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core - fixes issue#22244 and now -(zoo*x) return zoo*x #22281

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merged 3 commits into from Oct 14, 2021

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praneethratna
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@praneethratna praneethratna commented Oct 14, 2021

References to other Issues or PRs

Brief description of what is fixed or changed

Fixes #22244 and now -(zoo*x) returns zoo*x and also added regression tests in test_arit.py

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Release Notes

  • core
    • fixed bug in mul.py related to sign of zoo.

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sympy-bot commented Oct 14, 2021

Hi, I am the SymPy bot (v161). I'm here to help you write a release notes entry. Please read the guide on how to write release notes.

Your release notes are in good order.

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#### References to other Issues or PRs
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#### Brief description of what is fixed or changed
Fixes #22244 and now `-(zoo*x)` returns `zoo*x` and also added regression tests in test_arit.py

#### Other comments


#### Release Notes

<!-- Write the release notes for this release below between the BEGIN and END
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  * Added a new solver for logarithmic equations.

* functions
  * Fixed a bug with log of integers.

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<!-- BEGIN RELEASE NOTES -->
* core
  * fixed bug in mul.py related to sign of `zoo`.
<!-- END RELEASE NOTES -->

Update

The release notes on the wiki have been updated.

@oscargus
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Looks good! I updated the release note a bit to bring more context.

sympy/core/mul.py Outdated Show resolved Hide resolved
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Benchmark results from GitHub Actions

Lower numbers are good, higher numbers are bad. A ratio less than 1
means a speed up and greater than 1 means a slowdown. Green lines
beginning with + are slowdowns (the PR is slower then master or
master is slower than the previous release). Red lines beginning
with - are speedups.

Significantly changed benchmark results (PR vs master)

Significantly changed benchmark results (master vs previous release)

Full benchmark results can be found as artifacts in GitHub Actions
(click on checks at the top of the PR).

@smichr smichr enabled auto-merge October 14, 2021 14:06
@smichr smichr merged commit 3335d01 into sympy:master Oct 14, 2021
@praneethratna praneethratna deleted the 22244_core branch October 14, 2021 15:10
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zoo in sum should not retain sign
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