1//===-- Unittests for stdc_leading_zeros_uc -------------------------------===//
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_leading_zeros_uc.h"
11#include "test/UnitTest/Test.h"
12
13TEST(LlvmLibcStdcLeadingZerosUcTest, Zero) {
14 EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_uc(0U),
15 static_cast<unsigned>(UCHAR_WIDTH));
16}
17
18TEST(LlvmLibcStdcLeadingZerosUcTest, OneHot) {
19 for (unsigned i = 0U; i != UCHAR_WIDTH; ++i)
20 EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_uc(1U << i),
21 UCHAR_WIDTH - i - 1U);
22}
23

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