strings_test.cpp revision 73964c592c8d23901e9479893dfbd3d0f25bab04 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <gtest/gtest.h>
18
19#include <errno.h>
20#include <strings.h>
21
22TEST(strings, ffs) {
23  ASSERT_EQ( 0, ffs(0x00000000));
24  ASSERT_EQ( 1, ffs(0x00000001));
25  ASSERT_EQ( 6, ffs(0x00000020));
26  ASSERT_EQ(11, ffs(0x00000400));
27  ASSERT_EQ(16, ffs(0x00008000));
28  ASSERT_EQ(17, ffs(0x00010000));
29  ASSERT_EQ(22, ffs(0x00200000));
30  ASSERT_EQ(27, ffs(0x04000000));
31  ASSERT_EQ(32, ffs(0x80000000));
32}
33