1//===-- Unittests for stdc_count_zeros_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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/__support/CPP/limits.h"
10#include "src/stdbit/stdc_count_zeros_ull.h"
11#include "test/UnitTest/Test.h"
12
13TEST(LlvmLibcStdcCountZerosUllTest, Zero) {
14 EXPECT_EQ(LIBC_NAMESPACE::stdc_count_zeros_ull(0U),
15 static_cast<unsigned>(ULLONG_WIDTH));
16}
17
18TEST(LlvmLibcStdcCountZerosUllTest, Ones) {
19 for (unsigned i = 0U; i != ULLONG_WIDTH; ++i)
20 EXPECT_EQ(LIBC_NAMESPACE::stdc_count_zeros_ull(ULLONG_MAX >> i), i);
21}
22

source code of libc/test/src/stdbit/stdc_count_zeros_ull_test.cpp