text: //------------------------------------------------------------------------------
  /*
      This file is part of rippled: https://github.com/ripple/rippled
      Copyright (c) 2012, 2013 Ripple Labs Inc.
  
      Permission to use, copy, modify, and/or distribute this software for any
      purpose  with  or without fee is hereby granted, provided that the above
      copyright notice and this permission notice appear in all copies.
  
      THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
      MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
      ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
      WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
      ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
  //==============================================================================
  
  #ifndef RIPPLE_PROTOCOL_SYSTEMPARAMETERS_H_INCLUDED
  #define RIPPLE_PROTOCOL_SYSTEMPARAMETERS_H_INCLUDED
  
  #include <ripple/basics/XRPAmount.h>
  #include <ripple/basics/chrono.h>
  #include <cstdint>
  #include <string>
  
  namespace ripple {
  
  // Various protocol and system specific constant globals.
  
  /* The name of the system. */
  static inline std::string const&
  systemName()
  {
      static std::string const name = "ripple";
      return name;
  }
  
  /** Configure the native currency. */
  
  /** Number of drops in the genesis account. */
  constexpr XRPAmount INITIAL_XRP{100'000'000'000 * DROPS_PER_XRP};
  
  /** Returns true if the amount does not exceed the initial XRP in existence. */
  inline bool
  isLegalAmount(XRPAmount const& amount)
  {
      return amount <= INITIAL_XRP;
  }
  
  /* The currency code for the native currency. */
  static inline std::string const&
  systemCurrencyCode()
  {
      static std::string const code = "XRP";
      return code;
  }
  
  /** The XRP ledger network's earliest allowed sequence */
  static constexpr std::uint32_t XRP_LEDGER_EARLIEST_SEQ{32570u};
  
  /** The number of ledgers in a shard */
  static constexpr std::uint32_t DEFAULT_LEDGERS_PER_SHARD{16384u};
  
  /** The minimum amount of support an amendment should have.
  
      @note This value is used by legacy code and will become obsolete
            once the fixAmendmentMajorityCalc amendment activates.
  */
  constexpr std::ratio<204, 256> preFixAmendmentMajorityCalcThreshold;
  
  constexpr std::ratio<80, 100> postFixAmendmentMajorityCalcThreshold;
  
  /** The minimum amount of time an amendment must hold a majority */
  constexpr std::chrono::seconds const defaultAmendmentMajorityTime = weeks{2};
  
  }  // namespace ripple
  
  /** Default peer port (IANA registered) */
  inline std::uint16_t constexpr DEFAULT_PEER_PORT{2459};
  
  #endif
  