| //===-- Unittests for stdc_leading_ones_ull -------------------------------===// |
| // |
| // 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_ones_ull.h" |
| #include "test/UnitTest/Test.h" |
| |
| TEST(LlvmLibcStdcLeadingOnesUllTest, All) { |
| EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ull(ULLONG_MAX), |
| static_cast<unsigned>(ULLONG_WIDTH)); |
| } |
| |
| TEST(LlvmLibcStdcLeadingOnesUllTest, ZeroHot) { |
| for (unsigned i = 0U; i != ULLONG_WIDTH; ++i) |
| EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_ones_ull(~(1ULL << i)), |
| ULLONG_WIDTH - i - 1U); |
| } |