ccpuid:在编译时检测指令集的支持性。最新版的地址是http://www.cnblogs.com/zyl910/archive/2012/10/13/ccpuid_v103.html。 具体来说,检查popcnt指令是这样做的—— INTRIN_POPCNT 宏是 zintrin.h 提供的,可用来在编译时检测编译器是否支持popcnt指令集。 getcpuidfield(CPUF_POPCNT) 是 ccpuid.h ...
C/C++ API #include"libpopcnt.h"/** Count the number of 1 bits in the data array* @data: An array* @size: Size of data in bytes*/uint64_tpopcnt(constvoid*data,uint64_tsize); How to compile libpopcnt.hdoes not require any special compiler flags like-mavx2! To get the best perf...
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at ca76e8596dc479ff8c63a8629bd77a97b2f20c5c · lemire/Code-used-on-Daniel-Lemire-s-blog
SIMD (SSE) population count --- http://0x80.pl/articles/sse-popcount.html - sse-popcount/popcnt-lookup.cpp at b4905d6ecd9d01243b6aa8ddccc8a5bf496c7969 · WojciechMula/sse-popcount
// gcc -fno-inline -march=native -std=c99 -Wall -Wextra -O3 -g popcnt.c -o popcnt // NOTE: Works with gcc, but broken with ICC and Clang. Neither accepts // the inline assembly 'q' modifier: http://stackoverflow.com/questions/34459803 // Should be possible ...
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at 98a2dbca7bba86712e90e0b16bd3db728dbe8301 · lemire/Code-used-on-Daniel-Lemire-s-blog
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at 6062fbaf6d85c3a12a6b69d6ae5af5fbbe0b8d37 · lemire/Code-used-on-Daniel-Lemire-s-blog
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at d11d04513127bca544fbb83b2536f8ff255eb9f2 · lemire/Code-used-on-Daniel-Lemire-s-blog
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at efbf80a7713e6be10a97bf1109758dfaf03f94d2 · lemire/Code-used-on-Daniel-Lemire-s-blog
This is a repository for the code posted on my blog - Code-used-on-Daniel-Lemire-s-blog/extra/popcnt.c at d66770d0080fb0f3374b6d7e3b2a27d78cfc5e96 · lemire/Code-used-on-Daniel-Lemire-s-blog