[libc] [llvm] Improve qsort (PR #120450)

[Michael Jones via llvm-commits]

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@@ -9,84 +9,172 @@
 #ifndef LLVM_LIBC_SRC_STDLIB_QUICK_SORT_H
 #define LLVM_LIBC_SRC_STDLIB_QUICK_SORT_H
 
-#include "src/__support/macros/attributes.h"
+#include "src/__support/CPP/cstddef.h"
+#include "src/__support/big_int.h"
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michaelrj-google wrote:

is `big_int.h` used anywhere?

https://github.com/llvm/llvm-project/pull/120450