exduckdb

#include "duckdb/common/constants.hpp"
#include "duckdb/common/vector_size.hpp"
#include "duckdb/common/limits.hpp"

namespace duckdb {

const idx_t INVALID_INDEX = (idx_t)-1;
const row_t MAX_ROW_ID = 4611686018427388000ULL; // 2^62
const column_t COLUMN_IDENTIFIER_ROW_ID = (column_t)-1;
const sel_t ZERO_VECTOR[STANDARD_VECTOR_SIZE] = {0};
const double PI = 3.141592653589793;

const transaction_t TRANSACTION_ID_START = 4611686018427388000ULL;                // 2^62
const transaction_t MAX_TRANSACTION_ID = NumericLimits<transaction_t>::Maximum(); // 2^63
const transaction_t NOT_DELETED_ID = NumericLimits<transaction_t>::Maximum() - 1; // 2^64 - 1
const transaction_t MAXIMUM_QUERY_ID = NumericLimits<transaction_t>::Maximum();   // 2^64

uint64_t NextPowerOfTwo(uint64_t v) {
	v--;
	v |= v >> 1;
	v |= v >> 2;
	v |= v >> 4;
	v |= v >> 8;
	v |= v >> 16;
	v |= v >> 32;
	v++;
	return v;
}

} // namespace duckdb