static const struct printf_spec dummy_spec = {
	.type = FORMAT_TYPE_LONG_LONG,
	.flags = 0,
	.base = 10,
	.qualifier = 0,
	.field_width = 0,
	.precision = 0,
};

#define REPS (4000)

static unsigned measure_number(time_t* tp, unsigned long long num)
{
	char buf[64];
	time_t t, n;
	int i;
	unsigned count;

	t = *tp;
	count = 0;
	while (t == (n = time(NULL))) {
		for (i = REPS; --i >= 0;)
			number(buf, buf + 63, num, dummy_spec)[0] = '\0';
		count += REPS;
	}
	*tp = n;
	return count;
}

static void measure()
{
	time_t t, n;
	unsigned count1, count2, count3, count4, count5, count6, count7;

	t = time(NULL);
	while (t == (n = time(NULL)))
		continue;
	t = n;

	count1 = measure_number(&t, 8);
	count2 = measure_number(&t, 123);
	count3 = measure_number(&t, 123456);
	count4 = measure_number(&t, 12345678);
	count5 = measure_number(&t, 123456789);
	count6 = measure_number(&t, (1ULL << 32) - 1);
	count7 = measure_number(&t, (0ULL - 1));

	printf("Conversions per second: 8:%d 123:%d 123456:%d 12345678:%d 123456789:%d 2^32:%d 2^64:%d\n",
		count1,
		count2,
		count3,
		count4,
		count5,
		count6,
		count7
	);
}

static void check(unsigned long long v)
{
	char buf1[64];
	char buf2[64];
	number(buf1, buf1 + 63, v, dummy_spec)[0] = '\0';
	sprintf(buf2, "%llu", v);
	if (strcmp(buf1, buf2) != 0) {
		printf("Error in formatting %llu:'%s'\n", v, buf1);
		exit(1);
	}
}

int main()
{
	measure();measure();
	measure();measure();
	//measure();measure();

	unsigned long long i;
	for (i = 0; ; i++) {
		check(i);
//		check(((1ULL << 32) - 1) + i);
//		check(((1ULL << 32) - 1) - i);
		check(0ULL - i);
//		check(i * i);
//		check(i * i * i);
		if (!(i & 0x3ffff)) {
			printf("\rTested %llu                               ", i);
			fflush(NULL);
		}
	}

	return 0;
}