| 1 | //===-- Unittests for ffs -------------------------------------------------===// |
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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/strings/ffs.h" |
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| 10 | |
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| 11 | #include "src/__support/macros/config.h" |
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| 12 | #include "test/UnitTest/Test.h" |
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| 13 | |
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| 14 | namespace LIBC_NAMESPACE_DECL { |
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| 15 | |
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| 16 | TEST(LlvmLibcFfsTest, SimpleFfs) { |
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| 17 | ASSERT_EQ(ffs(0x00000000), 0); |
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| 18 | ASSERT_EQ(ffs(0x00000001), 1); |
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| 19 | ASSERT_EQ(ffs(0x00000020), 6); |
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| 20 | ASSERT_EQ(ffs(0x00000400), 11); |
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| 21 | ASSERT_EQ(ffs(0x00008000), 16); |
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| 22 | ASSERT_EQ(ffs(0x00010000), 17); |
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| 23 | ASSERT_EQ(ffs(0x00200000), 22); |
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| 24 | ASSERT_EQ(ffs(0x04000000), 27); |
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| 25 | ASSERT_EQ(ffs(0x80000000), 32); |
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| 26 | ASSERT_EQ(ffs(0xfbe71), 1); |
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| 27 | ASSERT_EQ(ffs(0xfbe70), 5); |
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| 28 | ASSERT_EQ(ffs(0x10), 5); |
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| 29 | ASSERT_EQ(ffs(0x100), 9); |
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| 30 | } |
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| 31 | |
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| 32 | } // namespace LIBC_NAMESPACE_DECL |
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| 33 | |
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