itoa.cpp

/*
 * Copyright (c) 2020 Arduino.  All rights reserved.
 */

/**************************************************************************************
 * INCLUDE
 **************************************************************************************/

#include <itoa.h>

#include <string>
#include <stdexcept>

#include <stdio.h>

/**************************************************************************************
 * FUNCTION IMPLEMENTATION
 **************************************************************************************/

std::string radixToFmtString(int const radix)
{
  if      (radix == 8)  return std::string("%o");
  else if (radix == 10) return std::string("%d");
  else if (radix == 16) return std::string("%X");
  else throw std::runtime_error("Invalid radix.");
}

char * itoa(int value, char * str, int radix)
{
  sprintf(str, radixToFmtString(radix).c_str(), value);
  return str;
}

char * ltoa(long value, char * str, int radix)
{
  sprintf(str, radixToFmtString(radix).c_str(), value);
  return str;
}

char * utoa(unsigned value, char *str, int radix)
{
  sprintf(str, radixToFmtString(radix).c_str(), value);
  return str;
}

char * ultoa(unsigned long value, char * str, int radix)
{
  sprintf(str, radixToFmtString(radix).c_str(), value);
  return str;
}