/*-----------------------------------------
* 100の位を文字へ変換
*--------------------------------------*/
static char *process_100(char num, int *p_flag, char *p_str)
{
char remainder_100 = num % 100;
p_str[*p_flag] = ASCII_CODE_0 + 1;
(*p_flag)++;
return process_10(remainder_100, p_flag, p_str);
}
/*-----------------------------------------------------
* 100の位を文字へ
*---------------------------------------------------*/
static char *process_100(int8_t num, int *p_flag, char *p_str)
{
int8_t remainder_100 = num % 100;
p_str[*p_flag] = ASCII_NUMBER_0 + 1;
(*p_flag)++;
return process_10(remainder_100, p_flag, p_str);
}
/*=====================================================
* @brief
* char型の数値を文字列へ変換
* @param
* num:変換したい数値
* @return
* str:変換した文字列を格納した配列へのポインタ
* @note
* -128 ~ 127の数値
*===================================================*/
char *char_number_to_string(char num)
{
static char str[5];
int flag = 0;
char *p_error_message = "size of number is over";
/* num == -128 process */
if(num == INT8_T_MINIMUM)
{
str[0] = '-';
str[1] = '1';
str[2] = '2';
str[3] = '8';
str[4] = '\0';
return str;
}
/* For negetive number process */
if(num < 0)
{
str[flag] = '-';
flag++;
num *= (-1);
}
/* converting process */
if(MIN_100 <= num && num <= MAX_100)
{
return process_100(num, &flag, str);
}
else if(MIN_10 <= num && num <= MAX_10)
{
return process_10(num, &flag, str);
}
else if(MIN_1 <= num && num <= MAX_1)
{
return process_1(num, &flag, str);
}
else
{
return p_error_message;
}
}
