// Licensed to the Apache Software Foundation (ASF) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you 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 #include #include "arrow/util/visibility.h" namespace arrow { namespace internal { /// \brief Compute the CRC32 checksum of the given data /// /// This function computes CRC32 with the polynomial 0x04C11DB7, /// as used in zlib and others (note this is different from CRC32C). /// To compute a running CRC32, pass the previous value in `prev`, /// otherwise `prev` should be 0. ARROW_EXPORT uint32_t crc32(uint32_t prev, const void* data, size_t length); } // namespace internal } // namespace arrow