07/07/06 11:01:36
typedef unsigned U;U R(U a){int c=0,s,t;U n,h,l;for(n=~0;n>>=1;c++);
for(s=t=c;s>c>>1;s--,t-=2){h=a&1<<s;l=a&1<<c-s;a^=h^h>>t^l^l<<t;}
return a;}
1文字縮め('A`)
07/07/06 11:01:36
typedef unsigned U;U R(U a){int c=0,s,t;U n,h,l;for(n=~0;n>>=1;c++);
for(s=t=c;s>c>>1;s--,t-=2){h=a&1<<s;l=a&1<<c-s;a^=h^h>>t^l^l<<t;}
return a;}
1文字縮め('A`)