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<title>llvm-project.git/libc/test/src/math/rsqrtf_test.cpp, branch main</title>
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<title>[libc][math][c23] Add rsqrtf() function (#159615)</title>
<updated>2025-10-09T03:37:01+00:00</updated>
<author>
<name>Anton Shepelev</name>
<email>44649959+amemov@users.noreply.github.com</email>
</author>
<published>2025-10-09T03:37:01+00:00</published>
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<id>1244fd24d9b61cfcebc12a05726a8fc82da0109e</id>
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Closes #159614

**Changes:**
- Initial implementation of rsqrt for single precision float

**Some small unrelated style changes to this PR (that I missed in my
rsqrtf16 PR):**
- Added extra - to the top comments to make it look nicer in
libc/shared/math/rsqrtf16.h
- Put rsqrtf16 inside of libc/src/__support/math/CMakeLists.txt in
sorted order
- Rearanged libc_math_function rsqrtf16 in Bazel to match alphabetical
order</content>
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Closes #159614

**Changes:**
- Initial implementation of rsqrt for single precision float

**Some small unrelated style changes to this PR (that I missed in my
rsqrtf16 PR):**
- Added extra - to the top comments to make it look nicer in
libc/shared/math/rsqrtf16.h
- Put rsqrtf16 inside of libc/src/__support/math/CMakeLists.txt in
sorted order
- Rearanged libc_math_function rsqrtf16 in Bazel to match alphabetical
order</pre>
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