int range(int argc, char *argv[], const int optind, const bool opt_short) {
char *endptr;
uint64_t start;
uint64_t stop;
uint64_t total;
uint64_t count;
if (optind + 2 < argc) {
error("too many arguments\n");
return 1;
}
start = strtoull(argv[optind], &endptr, 10);
if (*endptr != '\0') {
error("illegal argument: %s\n", argv[optind]);
return 1;
} else if (errno == ERANGE) {
error("out of range: %s\n", argv[optind]);
return 1;
}
if (optind + 1 == argc) {
stop = start;
start = 0;
} else {
stop = strtoull(argv[optind + 1], &endptr, 10);
if (*endptr != '\0') {
error("illegal argument: %s\n", argv[optind + 1]);
return 1;
} else if (errno == ERANGE) {
error("out of range: %s\n", argv[optind + 1]);
return 1;
} else if (start > stop) {
error("start must be <= stop\n");
return 1;
}
}
count = prime_range(start, stop, opt_short);
if (count == UINT64_MAX) {
error("unexpected error\n");
return 1;
}
if (opt_short) {
total = stop - start;
printf("%" PRIu64 " of %" PRIu64 " (%f%%) in [%" PRIu64 ", %" PRIu64 ")\n",
count, total, 100.0 * count / total, start, stop);
}
return 0;
}
prime_range prime(int first, int last)
{
BOOST_ASSERT( first <= last );
BOOST_ASSERT( first >= 1 );
return prime_range(first, last);
}
prime_range prime(int first)
{
BOOST_ASSERT( first >= 1 );
return prime_range(first);
}
