cpc/include/fm85Util.h

/*
 * 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.
 */

// author Kevin Lang, Oath Research

#ifndef GOT_FM85_UTIL_H
#include "common.h"

void * shallowCopy (void * oldObject, size_t numBytes);

extern double invPow2Tab[];

void fillInvPow2Tab (void);

extern double kxpByteLookup[];

void fillKxpByteLookup(void);

extern U8 byteTrailingZerosTable[];

void fillByteLeadingZerosTable(void);
void fillByteTrailingZerosTable(void);

Short countLeadingZerosInUnsignedLong  (U64 theInput);
Short countTrailingZerosInUnsignedLong (U64 theInput);

Long divideLongsRoundingUp (Long x, Long y);

// for delta-encoding an instance of (n choose m)
Long golombChooseNumberOfBaseBits (Long n, Long m);

Long countBitsSetInMatrix (U64 * array, Long length);

/******************************************/

#define GOT_FM85_UTIL_H
#endif