osmomath(log/CL): ln(x), log_1.0001(x), log_custom(x) (backport #3169)

[mergify]

This is an automatic backport of pull request #3169 done by Mergify.
Cherry-pick of 5c408f9 has failed:

On branch mergify/bp/v12.x/pr-3169
Your branch is up to date with 'origin/v12.x'.

You are currently cherry-picking commit 5c408f98.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   osmomath/decimal.go
	both modified:   osmomath/decimal_test.go

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[p0mvn]

too many conflicts