Add fixed point to AllTypes in libcudf unit tests

[karthikeyann]

Fixes part of #9468

• ITERATOR_TEST
  • excludes fixed point because it's unused anywhere now.
  • but this needs fix to fixed_point_scalar and fixed_point_scalar_device_view.
• REDUCTION_TEST
  • added fixed point support for minmax.
  • Also needs fix from fixed_point_scalar::value() (to avoid T{} cast)

[bdice]

Looks good to me!

[karthikeyann]

@codereport do fixed_point_scalar and fixed_point_scalar_device_view methods need some modification?
scalar.hpp

fixed_point_scalar<T>	fixed_width_scalar<T>
rep_type value()	T value()
rep_type* data()	T* data()
T fixed_point_value()

scalar_device_view.cuh

fixed_point_scalar_device_view<T>	fixed_width_scalar_device_view<T>
	T& value()
rep_type const& rep()
void set_value(rep_type value)	void set_value(T value)
	T* data()

[codecov]

Codecov Report

Merging #9472 (83466f0) into branch-21.12 (ab4bfaa) will decrease coverage by 0.12%.
The diff coverage is n/a.

@@               Coverage Diff                @@
##           branch-21.12    #9472      +/-   ##
================================================
- Coverage         10.79%   10.66%   -0.13%     
================================================
  Files               116      117       +1     
  Lines             18869    19755     +886     
================================================
+ Hits               2036     2106      +70     
- Misses            16833    17649     +816     

Impacted Files	Coverage Δ
python/cudf/cudf/io/csv.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/hdf.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/orc.py	0.00% <0.00%> (ø)
python/cudf/cudf/__init__.py	0.00% <0.00%> (ø)
python/cudf/cudf/_version.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/abc.py	0.00% <0.00%> (ø)
python/cudf/cudf/api/types.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/dlpack.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/frame.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/index.py	0.00% <0.00%> (ø)
... and 61 more

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[codereport]

👍

[codereport]

@codereport do fixed_point_scalar and fixed_point_scalar_device_view methods need some modification? scalar.hpp

fixed_point_scalar<T> fixed_width_scalar<T>
rep_type value() T value()
rep_type* data() T* data()
T fixed_point_value()
scalar_device_view.cuh

fixed_point_scalar_device_view<T> fixed_width_scalar_device_view<T>
T& value()
rep_type const& rep()
void set_value(rep_type value) void set_value(T value)
T* data()

I would say don't change it. I definitely recall that I explicitly added the fixed_point_value() on the non device type, but I don't think we want't that on the device one. If there is a need down that line for some of the "missing" methods we can revisit it then.

[karthikeyann]

@gpucibot merge