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replaced itoa with snprintf & fixed other docs

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This commit is contained in:
Krishna Vedala 2020-07-31 13:35:15 +00:00
parent 313a98085d
commit 98f9ae391f
1 changed files with 14 additions and 11 deletions
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25
conversions/int_to_string.c
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@ -1,9 +1,11 @@
/**
* @file
* @brief Convert integer to string (non-standard function)
* @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>
@ -13,14 +15,15 @@
* Converts an integer value to a null-terminated string using the specified
* base and stores the result in the array given by str parameter.
* @param value Value to be converted to a string.
* @param dest Array in memory where to store the resulting null-terminated
* @param dest pointer to array in memory to store the resulting null-terminated
* string.
* @param base Numerical base used to represent the value as a string, between 2
* and 16, where 10 means decimal base, 16 hexadecimal, 8 octal, and 2 binary.
* @returns A pointer to the resulting null-terminated string, same as parameter
* str.
* @note The destination array must be pre-allocated by the calling function.
*/
char *int_to_string(int value, char dest[], int base)
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'};
@ -57,14 +60,14 @@ static void test()
/* Generate value from 0 to 100 */
int value = rand() % 100;
assert(strcmp(itoa(value, str1, 2), int_to_string(value, str2, 2)) ==
0);
assert(strcmp(itoa(value, str1, 8), int_to_string(value, str2, 8)) ==
0);
assert(strcmp(itoa(value, str1, 10), int_to_string(value, str2, 10)) ==
0);
assert(strcmp(itoa(value, str1, 16), int_to_string(value, str2, 16)) ==
0);
// assert(strcmp(itoa(value, str1, 2), int_to_string(value, str2, 2)) ==
// 0);
snprintf(str1, MAX_SIZE, "%o", value);
assert(strcmp(str1, int_to_string(value, str2, 8)) == 0);
snprintf(str1, MAX_SIZE, "%d", value);
assert(strcmp(str1, int_to_string(value, str2, 10)) == 0);
snprintf(str1, MAX_SIZE, "%x", value);
assert(strcmp(str1, int_to_string(value, str2, 16)) == 0);
free(str1);
free(str2);