bitmanip.h File Reference

#include <config/bitcoin-config.h>
#include <cstdint>

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Functions
uint32_t	countBits (uint32_t v)

Function Documentation

countBits()

uint32_t countBits ( uint32_t  v )

inline

Computes the number of bits set in each group of 8bits then uses a multiplication to sum all of them in the 8 most significant bits and return these. More detailed explanation can be found at https://www.playingwithpointers.com/blog/swar.html

Definition at line 12 of file bitmanip.h.

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