| //===-- Unittests for stdc_leading_zeros_ul -------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/__support/CPP/limits.h" |
| #include "src/stdbit/stdc_leading_zeros_ul.h" |
| #include "test/UnitTest/Test.h" |
| #include <stddef.h> |
| |
| TEST(LlvmLibcStdcLeadingZerosUlTest, Zero) { |
| EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_ul(0UL), |
| static_cast<unsigned>(ULONG_WIDTH)); |
| } |
| |
| TEST(LlvmLibcStdcLeadingZerosUlTest, OneHot) { |
| for (unsigned i = 0U; i != ULONG_WIDTH; ++i) |
| EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_ul(1UL << i), |
| ULONG_WIDTH - i - 1U); |
| } |