Dong-hee Na
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161b6f5676
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hashcompute: Redesign XXXHashExtend API interface (#27)
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2019-03-18 21:40:16 +09:00 |
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Dong-hee Na
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20cafe6017
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hashcompute: Fix 64bits unaligned size case (#23)
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2019-03-16 23:15:32 +09:00 |
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Dong-hee Na
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5f56e8609c
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DifferenceHashExtend: Implement DifferenceHashExtend (#21)
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2019-03-16 00:47:57 +09:00 |
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Dong-hee Na
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b535580cae
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AverageHashExtend: Implement AverageHashExtend and fix bugs (#20)
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2019-03-16 00:26:38 +09:00 |
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Alex
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c41a59a872
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add PerceptionHashExtend function (#18)
goimagehash: Implement PerceptionHashExtend
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2019-02-08 18:02:25 +09:00 |
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Dong-hee Na
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6995fa9b0c
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goimagehash: Add test
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2018-05-10 11:54:51 +09:00 |
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Dong-hee Na
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1903317145
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goimagehash: Fix quickselect algorithm to pick median value.
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2018-05-08 13:33:43 +09:00 |
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Dominik Honnef
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ad2b6ded3b
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Use bits.OnesCount64 when available
Benchmark on i7-2600k, which has the POPCNT instruction:
name old time/op new time/op delta
DistanceIdentical-8 5.08ns ± 0% 1.01ns ± 1% -80.07% (p=0.008 n=5+5)
DistanceDifferent-8 81.5ns ± 2% 1.0ns ± 0% -98.76% (p=0.016 n=5+4)
Benchmark on Cavium Octeon, a MIPS64 platform with no dedicated
instruction:
name old time/op new time/op delta
DistanceIdentical-2 120ns ± 6% 144ns ± 5% +19.93% (p=0.008 n=5+5)
DistanceDifferent-2 656ns ± 4% 144ns ± 4% -78.09% (p=0.008 n=5+5)
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2018-05-02 23:52:38 +09:00 |
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Dong-hee Na
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7aba8954cd
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[goimagehash] First implement.
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2017-07-31 22:47:14 +09:00 |
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