solo1/time.c

#include <sys/time.h>
#include <stdint.h>

uint64_t millis()
{
    struct timeval te;
    gettimeofday(&te, NULL); // get current time
    uint64_t milliseconds = te.tv_sec*1000LL + te.tv_usec/1000; // calculate milliseconds
    return milliseconds;
}