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-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/strings/ffs.h"
10
11 #include "src/__support/macros/config.h"
12 #include "test/UnitTest/Test.h"
13
14 namespace LIBC_NAMESPACE_DECL {
15
TEST(LlvmLibcFfsTest,SimpleFfs)16 TEST(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_DECL
33