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A comment on Why SciPy builds for Python 3.12 on Windows are a minor miracle. Parent comment

Re:Why SciPy builds for Python 3.12 on Windows are a minor m... by murderfs on Wednesday November 08, 2023 @07:51PM (#38199444)
Depending on the code you're running, calling convention can matter a lot. The SysV ABI will use xmm/ymm/zmm automatically, whereas on Windows you have to opt into it with __vectorcall.
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