Eduardo Ponce created ARROW-12768:
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Summary: [C++] Add sign bit checks to floating-point arithmetic
kernels tests
Key: ARROW-12768
URL: https://issues.apache.org/jira/browse/ARROW-12768
Project: Apache Arrow
Issue Type: Test
Components: C++
Reporter: Eduardo Ponce
Fix For: 5.0.0
There are special cases in arithmetic kernels with floating-point arguments
that can result in signed values which are equivalent to their unsigned
counterpart when compared with the equality operator. To make the comparisons
correct, one needs to also compare the sign bit. For example, *-0.0 == 0.0* is
true while *std::signbit(-0.0) == std::signbit(0.0)* is false. This issue also
applies to *Inf* and *NaN* values.
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