8000 DOC: Document the removal of the NPY_ALIGNMENT_REQUIRED macro. · sthagen/numpy-numpy@f0e082d · GitHub
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DOC: Document the removal of the NPY_ALIGNMENT_REQUIRED macro.
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‎doc/release/upcoming_changes/29094.compatibility.rst

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The Macro NPY_ALIGNMENT_REQUIRED has been removed
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-------------------------------------------------
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The macro was defined in the `npy_cpu.h` file, so might be regarded as
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semipublic. As it turns out, with modern compilers and hardware it is almost
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always the case that alignment is required, so numpy no longer uses the macro.
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It is unlikely anyone uses it, but you might want to compile with the `-Wundef`
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flag or equivalent to be sure.

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