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// 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