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// 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.
// BitMap functions
#include "arrow/util/bit_util.h"
extern "C" {
#include "./types.h"
#define BITS_TO_BYTES(x) ((x + 7) / 8)
#define BITS_TO_WORDS(x) ((x + 63) / 64)
#define POS_TO_BYTE_INDEX(p) (p / 8)
#define POS_TO_BIT_INDEX(p) (p % 8)
FORCE_INLINE
bool bitMapGetBit(const uint8_t* bmap, int64_t position) {
return arrow::BitUtil::GetBit(bmap, position);
}
FORCE_INLINE
bool bitMapValidityGetBit(const uint8_t* bmap, int64_t position) {
if (bmap == nullptr) {
// if validity bitmap is null, all entries are valid.
return true;
} else {
return bitMapGetBit(bmap, position);
}
}
FORCE_INLINE
void bitMapSetBit(uint8_t* bmap, int64_t position, bool value) {
arrow::BitUtil::SetBitTo(bmap, position, value);
}
// Clear the bit if value = false. Does nothing if value = true.
FORCE_INLINE
void bitMapClearBitIfFalse(uint8_t* bmap, int64_t position, bool value) {
if (!value) {
arrow::BitUtil::ClearBit(bmap, position);
}
}
} // extern "C"
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