circle/examples/duff/duff1.cxx at master · seanbaxter/circle · GitHub

Name: circle/examples/duff/duff1.cxx at master · seanbaxter/circle · GitHub
Rating: 4.6 (564 reviews)
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#include<cstdlib>

voidduff_copy1(char* dest, constchar* source, size_t count) {
constchar* end = source + count;
while(size_t count = end - source) {
switch(count % 8) {
case0: *dest++ = *source++; // Fall-through to case 7
case7: *dest++ = *source++; // Fall-through to case 6...
case6: *dest++ = *source++;
case5: *dest++ = *source++;
case4: *dest++ = *source++;
case3: *dest++ = *source++;
case2: *dest++ = *source++;
case1: *dest++ = *source++;
break;
 }
 }
}

intmain(int argc, char** argv) {
return0;
}