[libcxx-commits] [libcxx] [libc++] Implement std::gcd using the binary version (PR #77747)

[via libcxx-commits]

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@@ -39,7 +41,7 @@ struct __ct_abs<_Result, _Source, true> {
     if (__t >= 0)
       return __t;
     if (__t == numeric_limits<_Source>::min())
-      return -static_cast<_Result>(__t);
+      return static_cast<_Result>(-static_cast<std::make_unsigned_t<_Result>>(__t));
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AdvenamTacet wrote:

Please, add a comment explaining why it's done that way.

https://github.com/llvm/llvm-project/pull/77747