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[R] Bindings for log base b #29265

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Description

@asfimport

This was skipped in ARROW-13280 because the C++ library didn't supported it, but ARROW-13345 has now been merged.

Continue to call the more efficient fixed-base kernels when the base is the scalar value e, 10, or 2. Call logb_checked when the base is a non-scalar or a scalar that's not e, 10, or 2.

Reporter: Neal Richardson / @nealrichardson
Assignee: Dewey Dunnington / @paleolimbot

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PRs and other links:

Note: This issue was originally created as ARROW-13626. Please see the migration documentation for further details.

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