[ARROW-13361] [C++] Clean up docs for log/trig functions, MakeUnaryArithmeticFunctionFloatingPoint

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/29035
• Assignee: Unassigned
• Reporter: David Li
• Created: 16/Jul/21 15:59
• Updated: 11/Jan/23 08:32

Description

The docs state these only work with float arguments, but they work with integers too.

MakeUnaryArithmeticFunctionFloatingPoint has a redundant check for float arguments that no longer applies: https://github.com/apache/arrow/blob/f7cac0e5866a08e946a14976ef854e8c42ac281b/cpp/src/arrow/compute/kernels/scalar_arithmetic.cc#L1266