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4 Commits

Author SHA1 Message Date
Jack O'Connor 163f52245d port compress_subtree_to_parent_node from Rust to C 
This recursive function performs parallel parent node hashing, which is
an important optimization.
 2020-01-22 21:32:39 -05:00
Jack O'Connor de1cf0038e add the round_down_to_power_of_2 algoirthm 
This could probably be sped up by detecting LZCNT support, but it's
unlikely to be a bottleneck.
 2020-01-22 21:32:39 -05:00
Jack O'Connor d0c8fc16b3 use a better popcnt fallback algorithm 
This one loops once for every set bit, rather than once for each bit
position to the right of the highest set bit.

https://en.wikipedia.org/wiki/Hamming_weight#Efficient_implementation
 2020-01-21 10:47:00 -05:00
Jack O'Connor a7579d30ad merge BLAKE3-c into this repo 
This is commit 4476d9da0e370993823e7ad17592b84e905afd76 of
https://github.com/veorq/BLAKE3-c.
 2020-01-09 09:48:52 -05:00