| // Copyright 2012 Cloudera, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <boost/utility.hpp> |
| #include <gtest/gtest.h> |
| #include "kudu/util/bit-util.h" |
| |
| namespace kudu { |
| |
| TEST(BitUtil, TrailingBits) { |
| EXPECT_EQ(BitUtil::TrailingBits(BOOST_BINARY(1 1 1 1 1 1 1 1), 0), 0); |
| EXPECT_EQ(BitUtil::TrailingBits(BOOST_BINARY(1 1 1 1 1 1 1 1), 1), 1); |
| EXPECT_EQ(BitUtil::TrailingBits(BOOST_BINARY(1 1 1 1 1 1 1 1), 64), |
| BOOST_BINARY(1 1 1 1 1 1 1 1)); |
| EXPECT_EQ(BitUtil::TrailingBits(BOOST_BINARY(1 1 1 1 1 1 1 1), 100), |
| BOOST_BINARY(1 1 1 1 1 1 1 1)); |
| EXPECT_EQ(BitUtil::TrailingBits(0, 1), 0); |
| EXPECT_EQ(BitUtil::TrailingBits(0, 64), 0); |
| EXPECT_EQ(BitUtil::TrailingBits(1LL << 63, 0), 0); |
| EXPECT_EQ(BitUtil::TrailingBits(1LL << 63, 63), 0); |
| EXPECT_EQ(BitUtil::TrailingBits(1LL << 63, 64), 1LL << 63); |
| } |
| |
| } // namespace kudu |