[libc-commits] [libc] [libc][stdbit] implement stdc_trailing_zeros (C23) (PR #80344)

[Nick Desaulniers via libc-commits]

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@@ -0,0 +1,21 @@
+//===-- Unittests for stdc_trailing_zeros_ull -----------------------------===//
+//
+// 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/__support/CPP/limits.h"
+#include "src/stdbit/stdc_trailing_zeros_ull.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcStdcTrailingZerosUllTest, Zero) {
+  EXPECT_EQ(LIBC_NAMESPACE::stdc_trailing_zeros_ull(0U),
+            static_cast<unsigned>(LLONG_WIDTH));
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nickdesaulniers wrote:

ULLONG_WIDTH

https://github.com/llvm/llvm-project/pull/80344