tracy/server/TracyPopcnt.hpp
2019-05-28 18:18:54 +02:00

20 lines
489 B
C++

#ifndef __TRACYPOPCNT_HPP__
#define __TRACYPOPCNT_HPP__
#include <limits.h>
#if defined _WIN64 || ( defined __CYGWIN__ && __WORDSIZE == 64 )
# include <intrin.h>
# define TracyCountBits __popcnt64
#else
static inline int TracyCountBits( uint64_t i )
{
i = i - ( (i >> 1) & 0x5555555555555555 );
i = ( i & 0x3333333333333333 ) + ( (i >> 2) & 0x3333333333333333 );
i = ( (i + (i >> 4) ) & 0x0F0F0F0F0F0F0F0F );
return ( i * (0x0101010101010101) ) >> 56;
}
#endif
#endif