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