[libc-commits] [libc] [libc][search] implement posix `lfind` function (PR #114692)

[via libc-commits]

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@@ -0,0 +1,46 @@
+//===-- Unittests for lfind -----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/search/lfind.h"
+#include "test/UnitTest/Test.h"
+
+int compar(void *a, void *b) {
+  return *reinterpret_cast<int *>(a) - *reinterpret_cast<int *>(b);
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duncpro wrote:

[In C, the `==` operator returns `1` if the operands are equal, and `0` if they are not.](https://godbolt.org/z/EooeKfdjP)

But what we want is to return `0` when the operands are equal. Which is the opposite of what the `==` operator does. So, we can `!=` here.

I'm sure thats what you meant here. 

To me the subtraction is clearer, but I'll defer to your judgment and change this to use `!=` operator instead.

https://github.com/llvm/llvm-project/pull/114692