23 lines · cpp
1//===-- Unittests for stdc_leading_ones_ul --------------------------------===//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_leading_ones_ul.h"11#include "test/UnitTest/Test.h"12 13TEST(LlvmLibcStdcLeadingOnesUlTest, All) {14 EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ul(ULONG_MAX),15 static_cast<unsigned>(ULONG_WIDTH));16}17 18TEST(LlvmLibcStdcLeadingOnesUlTest, ZeroHot) {19 for (unsigned i = 0U; i != ULONG_WIDTH; ++i)20 EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ul(~(1UL << i)),21 ULONG_WIDTH - i - 1U);22}23