33 lines · cpp
1//===-- Unittests for ffs -------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/strings/ffs.h"10 11#include "src/__support/macros/config.h"12#include "test/UnitTest/Test.h"13 14namespace LIBC_NAMESPACE_DECL {15 16TEST(LlvmLibcFfsTest, SimpleFfs) {17 ASSERT_EQ(ffs(0x00000000), 0);18 ASSERT_EQ(ffs(0x00000001), 1);19 ASSERT_EQ(ffs(0x00000020), 6);20 ASSERT_EQ(ffs(0x00000400), 11);21 ASSERT_EQ(ffs(0x00008000), 16);22 ASSERT_EQ(ffs(0x00010000), 17);23 ASSERT_EQ(ffs(0x00200000), 22);24 ASSERT_EQ(ffs(0x04000000), 27);25 ASSERT_EQ(ffs(0x80000000), 32);26 ASSERT_EQ(ffs(0xfbe71), 1);27 ASSERT_EQ(ffs(0xfbe70), 5);28 ASSERT_EQ(ffs(0x10), 5);29 ASSERT_EQ(ffs(0x100), 9);30}31 32} // namespace LIBC_NAMESPACE_DECL33