#include <stdio.h>
#include <stdint.h>

uint16_t num;
uint16_t divisor;
uint64_t result;

//...

uint16_t divide16(uint16_t dividend, uint16_t divisor)
{
	//uint16_t k = 65536.0 / (float)divisor;
	uint16_t k = 4294967295 / (divisor * 65535) + 1;
	return (dividend * k) >> 15 + 1;
}

int main()
{

	uint16_t nums[] = {1234, 2345, 3456, 4567, 5678, 6789, 7777, 2253,12345,12346,12347,12312};
	uint16_t divisors[] = {3, 4, 5, 6, 7, 13, 15, 16, 17, 18,19,20,21,22,23,24,123,125,178,199};

	uint16_t fail = 0;
	for (uint8_t n = 0; n < sizeof(nums) / sizeof(nums[0]) - 1; n++) {
		for (uint8_t d = 0; d < sizeof(divisors) / sizeof(divisors[0]) - 1; d++) {
			uint16_t res1 = nums[n] / divisors[d];
			uint16_t res2 = divide16(nums[n], divisors[d]);
			printf("%d / %d = %d, divide16(%d, %d) = %d)", nums[n], divisors[d], res1, nums[n], divisors[d], res1);
			if (res1 == res2) {
				printf("-----OK\n");
			} else {
				printf("-----FAILED!\n");
				fail++;
			}
		}
	}

	if (fail > 0) {
		printf("----------\nTEST FAILED!!!\n");
	} else {
		printf("----------\nTEST SUCCESS!!!\n");
	}


	return 0;
}