[libcxx-commits] [libcxx] [libc++] Implement a libc++ private version of isascii (PR #122361)

[Louis Dionne via libcxx-commits]

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@@ -516,6 +516,8 @@ protected:
 };
 #endif // _LIBCPP_HAS_WIDE_CHARACTERS
 
+inline _LIBCPP_HIDE_FROM_ABI int __libcpp_isascii(int __c) { return (__c & ~0x7F) == 0; }
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ldionne wrote:

I could do that, but `isascii` typically returns `int` on platforms that implement it. It's a common extension. WDYT?

https://github.com/llvm/llvm-project/pull/122361