new init int to string

Author: kanishkratn

Integer_to_string.c

@@ -0,0 +1,71 @@
+/**
+ * @file
+ * @brief Convert a positive integer to string (non-standard function)
+ * representation.
+ */
+#include <assert.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+char *int_to_string(uint16_t value, char *dest, int base)
+{
+ const char hex_table[] = {'0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+
+ int len = 0;
+ do
+ {
+ dest[len++] = hex_table[value % base];
+ value /= base;
+ } while (value != 0);
+
+ /* reverse characters */
+ for (int i = 0, limit = len / 2; i < limit; ++i)
+ {
+ char t = dest[i];
+ dest[i] = dest[len - 1 - i];
+ dest[len - 1 - i] = t;
+ }
+ dest[len] = '\0';
+ return dest;
+}
+
+/** Test function
+ * @returns `void`
+ */
+static void test()
+{
+ const int MAX_SIZE = 100;
+ char *str1 = (char *)calloc(sizeof(char), MAX_SIZE);
+ char *str2 = (char *)calloc(sizeof(char), MAX_SIZE);
+
+ for (int i = 1; i <= 100; ++i) /* test 100 random numbers */
+ {
+ /* Generate value from 0 to 100 */
+ int value = rand() % 100;
+
+ // assert(strcmp(itoa(value, str1, 2), int_to_string(value, str2, 2)) ==
+ // 0);
+ snprintf(str1, MAX_SIZE, "%o", value); //* standard C - to octal */
+ assert(strcmp(str1, int_to_string(value, str2, 8)) == 0);
+ snprintf(str1, MAX_SIZE, "%d", value); /* standard C - to decimal */
+ assert(strcmp(str1, int_to_string(value, str2, 10)) == 0);
+ snprintf(str1, MAX_SIZE, "%x", value); /* standard C - to hexadecimal */
+ assert(strcmp(str1, int_to_string(value, str2, 16)) == 0);
+ }
+
+ free(str1);
+ free(str2);
+}
+
+/** Driver Code */
+int main()
+{
+ /* Intializes random number generator */
+ srand(time(NULL));
+ test();
+ return 0;
+}