File endianness.h

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#ifndef TEMPLAT_UTIL_ENDIANNESS_H
#define TEMPLAT_UTIL_ENDIANNESS_H

/* This file is part of TempLat, available at https://cosmolattice.github.io/templat .
   Copyright 2021-2026 The TempLat authors, see AUTHORS.md.
   Released under the MIT license, see LICENSE.md. */

// File info: Main contributor(s): Wessel Valkenburg, Year: 2019

#include <cstdint>

namespace TempLat
{

  class Endianness
  {
  public:
    // Put public methods here. These should change very little over time.
    Endianness() : mIsLittleEndian(true)
    {
      /* see https://stackoverflow.com/a/1001326/2295722 and the comment about int16_t */
      int16_t temp = 0x1234;
      char *tempChar = (char *)&temp;
      mIsLittleEndian = *tempChar == 0x34;
      mIsBigEndian = *tempChar == 0x12;
    }
    const bool &isLittle() const { return mIsLittleEndian; }
    const bool &isBig() const { return mIsBigEndian; }

  private:
    /* Put all member variables and private methods here. These may change arbitrarily. */
    bool mIsLittleEndian, mIsBigEndian;
  };

} // namespace TempLat

#endif