ref: cdaa7b899f874f4e0e6c8a04dcf6a5a3a7dfafdf
dir: /sys/src/ape/lib/ap/gen/div.c/
#include <stdlib.h>
div_t div(int numer, int denom)
{
div_t ans;
ans.quot=numer/denom; /* assumes division truncates */
ans.rem=numer-ans.quot*denom;
return ans;
}