[libc-commits] [libc] [llvm] [libc][math][c23] Add tanbf16 math function (PR #185100)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- libc/shared/math/tanbf16.h libc/src/__support/math/tanbf16.h libc/src/math/generic/tanbf16.cpp libc/src/math/tanbf16.h libc/test/src/math/smoke/tanbf16_test.cpp libc/test/src/math/tanbf16_test.cpp libc/shared/math.h libc/test/shared/shared_math_test.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libc/src/__support/math/tanbf16.h b/libc/src/__support/math/tanbf16.h
index 8eabbd02f..69b275c4a 100644
--- a/libc/src/__support/math/tanbf16.h
+++ b/libc/src/__support/math/tanbf16.h
@@ -71,10 +71,10 @@ LIBC_INLINE bfloat16 tanbf16(bfloat16 x) {
   sincosf_eval(xd, x_abs_d, sin_k, cos_k, sin_y, cosm1_y);
 
   return fputil::cast<bfloat16>(
-      fputil::multiply_add(sin_y, cos_k, 
-          fputil::multiply_add(cosm1_y, sin_k, sin_k)) /
-      fputil::multiply_add(sin_y, -sin_k, 
-          fputil::multiply_add(cosm1_y, cos_k, cos_k)));
+      fputil::multiply_add(sin_y, cos_k,
+                           fputil::multiply_add(cosm1_y, sin_k, sin_k)) /
+      fputil::multiply_add(sin_y, -sin_k,
+                           fputil::multiply_add(cosm1_y, cos_k, cos_k)));
 }
 
 } // namespace math

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https://github.com/llvm/llvm-project/pull/185100