22 lines · cpp
1//===-- Unittests for stdc_trailing_ones_ui -------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/CPP/limits.h"10#include "src/stdbit/stdc_trailing_ones_ui.h"11#include "test/UnitTest/Test.h"12 13TEST(LlvmLibcStdcTrailingOnesUiTest, ALL) {14 EXPECT_EQ(LIBC_NAMESPACE::stdc_trailing_ones_ui(UINT_MAX),15 static_cast<unsigned>(UINT_WIDTH));16}17 18TEST(LlvmLibcStdcTrailingOnesUiTest, ZeroHot) {19 for (unsigned i = 0U; i != UINT_WIDTH; ++i)20 EXPECT_EQ(LIBC_NAMESPACE::stdc_trailing_ones_ui(~(1U << i)), i);21}22