Amelia Thurdekoos

ENH: float16.h in NumPy

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This issue will close #30280 ## Summary of Changes: - New `float16.h` - This is a header only implementation of `halffloat.h`. Effectively eliminating the need to include `npy_math` when using...

ENH: einsum_sumprod.c.src to cpp in numpy.multiarray see #29528

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This PR addresses a part of #29528. ### Description This change ports einsum_sumprod from the generated einsum_sumprod.c.src file to a C++ template source file (einsum_sumprod.cpp). The goal is to improve...

ENH: Add float16, npy_half, specific routines to the NumPy C-API as NpyHalf*

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## Current situation `float16`, `npy_half`, is currently handled through a set of helper functions located in `numpy/halffloat.h` and implemented in `npymath`. This requires linking against the `libnpymath.a`, a static library....

DOC: Create tutorial guide to document the process for extending the NumPy C-API

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### Issue with current documentation: There is currently no single, step by step piece of documentation on how to extend the NumPy C-API when introducing new dtypes or adding new...