whats the purpose of this C function

Excuse my newfagedry

Consider the C code function below:
void qwerty(int *x, int *y, int size)
{
 int k=0;
 while ( k < size ) {
    *(x + k) = *(y + k);
    k++;
 }
}

i) What best describes the purpose of the function qwerty?

>>42
PROTIP: sizeof(int) is usually not 1.

/* Standard Version */
#include <string.h>
#define qwerty(x,y,s) memcpy(x,y,(s)*sizeof(int))