utils.h

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#pragma once
#include <derive-c/core/math.h>
 
#define DC_ARENA_CHUNKED_INDEX_TO_BLOCK(INDEX, BLOCK_INDEX_BITS) ((INDEX) >> (BLOCK_INDEX_BITS))
 
#define DC_ARENA_CHUNKED_INDEX_TO_OFFSET(INDEX, BLOCK_INDEX_BITS)                                  \
    ((INDEX) & ((1ULL << (BLOCK_INDEX_BITS)) - 1ULL))
 
#define DC_ARENA_CHUNKED_BLOCK_OFFSET_TO_INDEX(BLOCK, OFFSET, BLOCK_INDEX_BITS)                    \
    (((BLOCK) << (BLOCK_INDEX_BITS)) + OFFSET)
 
#define DC_ARENA_CHUNKED_BLOCK_SIZE(BLOCK_INDEX_BITS) (1ULL << (BLOCK_INDEX_BITS))