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