Function normalizeFloatingPointStr

third-part/jsoncpp/src/jsontestrunner/main.cpp:30–56

};

static JSONCPP_STRING normalizeFloatingPointStr(double value) {
  char buffer[32];
#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
  sprintf_s(buffer, sizeof(buffer), "%.16g", value);
#else
  snprintf(buffer, sizeof(buffer), "%.16g", value);
#endif
  buffer[sizeof(buffer) - 1] = 0;
  JSONCPP_STRING s(buffer);
  JSONCPP_STRING::size_type index = s.find_last_of("eE");
  if (index != JSONCPP_STRING::npos) {
    JSONCPP_STRING::size_type hasSign =
        (s[index + 1] == '+' || s[index + 1] == '-') ? 1 : 0;
    JSONCPP_STRING::size_type exponentStartIndex = index + 1 + hasSign;
    JSONCPP_STRING normalized = s.substr(0, exponentStartIndex);
    JSONCPP_STRING::size_type indexDigit =
        s.find_first_not_of('0', exponentStartIndex);
    JSONCPP_STRING exponent = "0";
    if (indexDigit !=
        JSONCPP_STRING::npos) // There is an exponent different from 0
    {
      exponent = s.substr(indexDigit);
    }
    return normalized + exponent;
  }
  return s;
}

static JSONCPP_STRING readInputTestFile(const char* path) {
  FILE* file = fopen(path, "rb");