69 lines
2.8 KiB
C++
69 lines
2.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "util/bit_util.h"
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#include <gtest/gtest-message.h>
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#include <gtest/gtest-test-part.h>
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#include <boost/utility/binary.hpp>
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#include "gtest/gtest_pred_impl.h"
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namespace doris {
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TEST(BitUtil, Ceil) {
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EXPECT_EQ(BitUtil::ceil(0, 1), 0);
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EXPECT_EQ(BitUtil::ceil(1, 1), 1);
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EXPECT_EQ(BitUtil::ceil(1, 2), 1);
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EXPECT_EQ(BitUtil::ceil(1, 8), 1);
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EXPECT_EQ(BitUtil::ceil(7, 8), 1);
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EXPECT_EQ(BitUtil::ceil(8, 8), 1);
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EXPECT_EQ(BitUtil::ceil(9, 8), 2);
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}
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TEST(BitUtil, Popcount) {
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EXPECT_EQ(BitUtil::popcount(BOOST_BINARY(0 1 0 1 0 1 0 1)), 4);
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EXPECT_EQ(BitUtil::popcount_no_hw(BOOST_BINARY(0 1 0 1 0 1 0 1)), 4);
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EXPECT_EQ(BitUtil::popcount(BOOST_BINARY(1 1 1 1 0 1 0 1)), 6);
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EXPECT_EQ(BitUtil::popcount_no_hw(BOOST_BINARY(1 1 1 1 0 1 0 1)), 6);
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EXPECT_EQ(BitUtil::popcount(BOOST_BINARY(1 1 1 1 1 1 1 1)), 8);
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EXPECT_EQ(BitUtil::popcount_no_hw(BOOST_BINARY(1 1 1 1 1 1 1 1)), 8);
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EXPECT_EQ(BitUtil::popcount(0), 0);
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EXPECT_EQ(BitUtil::popcount_no_hw(0), 0);
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}
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TEST(BitUtil, BigEndianToHost) {
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uint16_t v16 = 0x1234;
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uint32_t v32 = 0x12345678;
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uint64_t v64 = 0x123456789abcdef0;
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unsigned __int128 v128 = ((__int128)0x123456789abcdef0LL << 64) | 0x123456789abcdef0LL;
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wide::UInt256 v256 =
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wide::UInt256(0x123456789abcdef0) << 192 | wide::UInt256(0x123456789abcdef0) << 128 |
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wide::UInt256(0x123456789abcdef0) << 64 | wide::UInt256(0x123456789abcdef0);
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EXPECT_EQ(BitUtil::big_endian_to_host(v16), 0x3412);
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EXPECT_EQ(BitUtil::big_endian_to_host(v32), 0x78563412);
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EXPECT_EQ(BitUtil::big_endian_to_host(v64), 0xf0debc9a78563412);
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EXPECT_EQ(BitUtil::big_endian_to_host(v128),
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((__int128)0xf0debc9a78563412LL << 64) | 0xf0debc9a78563412LL);
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EXPECT_EQ(BitUtil::big_endian_to_host(v256),
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wide::UInt256(0xf0debc9a78563412) << 192 | wide::UInt256(0xf0debc9a78563412) << 128 |
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wide::UInt256(0xf0debc9a78563412) << 64 | wide::UInt256(0xf0debc9a78563412));
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}
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} // namespace doris
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