a5588b6d20
This patch adds the `strings/ffs` function. ref: https://pubs.opengroup.org/onlinepubs/9799919799/functions/ffs.html Closes: #122054.
33 lines
998 B
C++
33 lines
998 B
C++
//===-- Unittests for ffs -------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/strings/ffs.h"
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#include "src/__support/macros/config.h"
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#include "test/UnitTest/Test.h"
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namespace LIBC_NAMESPACE_DECL {
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TEST(LlvmLibcFfsTest, SimpleFfs) {
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ASSERT_EQ(ffs(0x00000000), 0);
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ASSERT_EQ(ffs(0x00000001), 1);
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ASSERT_EQ(ffs(0x00000020), 6);
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ASSERT_EQ(ffs(0x00000400), 11);
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ASSERT_EQ(ffs(0x00008000), 16);
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ASSERT_EQ(ffs(0x00010000), 17);
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ASSERT_EQ(ffs(0x00200000), 22);
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ASSERT_EQ(ffs(0x04000000), 27);
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ASSERT_EQ(ffs(0x80000000), 32);
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ASSERT_EQ(ffs(0xfbe71), 1);
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ASSERT_EQ(ffs(0xfbe70), 5);
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ASSERT_EQ(ffs(0x10), 5);
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ASSERT_EQ(ffs(0x100), 9);
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}
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} // namespace LIBC_NAMESPACE_DECL
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