| 1 | //===-- Unittests for stdc_leading_zeros_ul -------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/__support/CPP/limits.h" |
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| 10 | #include "src/stdbit/stdc_leading_zeros_ul.h" |
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| 11 | #include "test/UnitTest/Test.h" |
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| 12 | #include <stddef.h> |
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| 13 | |
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| 14 | TEST(LlvmLibcStdcLeadingZerosUlTest, Zero) { |
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| 15 | EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_ul(0UL), |
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| 16 | static_cast<unsigned>(ULONG_WIDTH)); |
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| 17 | } |
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| 18 | |
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| 19 | TEST(LlvmLibcStdcLeadingZerosUlTest, OneHot) { |
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| 20 | for (unsigned i = 0U; i != ULONG_WIDTH; ++i) |
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| 21 | EXPECT_EQ(LIBC_NAMESPACE::stdc_leading_zeros_ul(1UL << i), |
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| 22 | ULONG_WIDTH - i - 1U); |
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| 23 | } |
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| 24 | |
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