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now works on 32 bit arm platforms, such as RPi #18

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now works on 32 bit arm platforms, such as RPi #18

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7f7558a
now works on 32 bit arm platforms, such as RPi
zertyz Oct 1, 2018
4ba60d1
corrected 32 bit compilation when using clang
zertyz Dec 3, 2018
a0cfdd1
aarch64 is now recognized as 64-bits
zertyz Feb 24, 2023
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16 changes: 14 additions & 2 deletions bytell_hash_map.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,14 @@ struct sherwood_v8_constants
return metadata & bits_for_distance;
}

static constexpr int num_jump_distances = 126;
static constexpr int num_jump_distances =
#ifdef ENV64BIT
126
#else // if 32 bits
100
#endif
;

// jump distances chosen like this:
// 1. pick the first 16 integers to promote staying in the same block
// 2. add the next 66 triangular numbers to get even jumps when
Expand All @@ -61,14 +68,19 @@ struct sherwood_v8_constants

3741, 8385, 18915, 42486, 95703, 215496, 485605, 1091503, 2456436,
5529475, 12437578, 27986421, 62972253, 141700195, 318819126, 717314626,
1614000520, 3631437253, 8170829695, 18384318876, 41364501751,
1614000520, 3631437253,

#ifdef ENV64BIT

8170829695, 18384318876, 41364501751,
93070021080, 209407709220, 471167588430, 1060127437995, 2385287281530,
5366895564381, 12075513791265, 27169907873235, 61132301007778,
137547673121001, 309482258302503, 696335090510256, 1566753939653640,
3525196427195653, 7931691866727775, 17846306747368716,
40154190394120111, 90346928493040500, 203280588949935750,
457381324898247375, 1029107980662394500, 2315492957028380766,
5209859150892887590,
#endif
};
};
template<typename T>
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