void duff(int* to, int* from, int count){ int n=(count+7)/8; switch(count%8){ case 0: do{ *to++=*from++; case 7: *to++=*from++; case 6: *to++=*from++; case 5: *to++=*from++; case 4: *to++=*from++; case 3: *to++=*from++; case 2: *to++=*from++; case 1: *to++=*from++; }while(--n>0); } }