REF: use fused types for the rest of libjoin

[jbrockmendel]

• closes #xxxx
• tests added / passed
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

[jbrockmendel]

Looking at the git history my impression is that this may have been commented-out unintentionally. Maybe the CI will tell us otherwise.

[codecov]

Codecov Report

Merging #23214 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #23214      +/-   ##
==========================================
+ Coverage   92.19%   92.19%   +<.01%     
==========================================
  Files         169      169              
  Lines       50962    50953       -9     
==========================================
- Hits        46984    46976       -8     
+ Misses       3978     3977       -1

Flag	Coverage Δ
#multiple	90.61% <100%> (ø)	⬆️
#single	42.27% <33.33%> (ø)	⬆️

Impacted Files	Coverage Δ
pandas/core/reshape/merge.py	94.01% <100%> (+0.06%)	⬆️

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[jreback]

lgtm. rebase and ping on green.

[pep8speaks]

Hello @jbrockmendel! Thanks for updating the PR.

• There are no PEP8 issues in the file pandas/core/reshape/merge.py !

• There are no PEP8 issues in the file setup.py !

[jbrockmendel]

Ping

[jreback]

thanks!

[jreback]

@jbrockmendel

maybe declared twice?

Compiling pandas/_libs/join.pyx because it changed.
[1/1] Cythonizing pandas/_libs/join.pyx
warning: __pyxutil:33:4: '___pyx_int64_t' redeclared 
warning: __pyxutil:34:4: '___pyx_uint64_t' redeclared 
warning: __pyxutil:33:4: '___pyx_int64_t' redeclared 
warning: __pyxutil:34:4: '___pyx_uint64_t' redeclared 
warning: __pyxutil:33:4: '___pyx_int64_t' redeclared 
warning: __pyxutil:34:4: '___pyx_uint64_t' redeclared 
running build_ext
building 'pandas._libs.join' extension
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Users/jreback/miniconda3/envs/pandas/include -arch x86_64 -I/Users/jreback/miniconda3/envs/pandas/include -arch x86_64 -Ipandas/_libs/src/klib -Ip

[jbrockmendel]

I noticed that too; it isn't clear where it's coming from. I've been keeping the cython folks up to date on issues we run into, will ask about that one if it keeps coming up.

[jorisvandenbossche]

Just wanted to report the same, those warnings got introduced recently. But you think it is a cython issue?