Endian.h

#ifndef Endian_h
#define Endian_h
/* SPDX-License-Identifier: CC0-1.0 */
 
#include <QString>
 
namespace Isis {
  enum ByteOrder {
    NoByteOrder = 0,
    Lsb,
    Msb
  };
 
  inline QString ByteOrderName(Isis::ByteOrder byteOrder) {
    if(byteOrder == Isis::NoByteOrder) return "None";
    if(byteOrder == Isis::Lsb) return "Lsb";
    if(byteOrder == Isis::Msb) return "Msb";
    return "Error";
  }
 
  inline Isis::ByteOrder ByteOrderEnumeration(const QString &order) {
    QString temp = order.toUpper();
    if(temp == "LSB") return Isis::Lsb;
    if(temp == "MSB") return Isis::Msb;
    return Isis::NoByteOrder;
  }
 
  inline bool IsLsb() {
    union {
      short a;
      char b[2];
    } test;
 
    test.a = 1;
    if(test.b[0] == 0) return false;
    return true;
  }
 
  inline bool IsMsb() {
    return !Isis::IsLsb();
  }
 
  inline bool IsLittleEndian() {
    return IsLsb();
  }
 
  inline bool IsBigEndian() {
    return !Isis::IsLsb();
  }
}
 
#endif