ltiTypes.h

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/*
 * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
 * Lehrstuhl fuer Technische Informatik, RWTH-Aachen, Germany
 *
 * This file is part of the LTI-Computer Vision Library (LTI-Lib)
 *
 * The LTI-Lib is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License (LGPL)
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * The LTI-Lib is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the LTI-Lib; see the file LICENSE.  If
 * not, write to the Free Software Foundation, Inc., 59 Temple Place -
 * Suite 330, Boston, MA 02111-1307, USA.
 */


/*----------------------------------------------------------------
 * project ....: LTI Digital Image/Signal Processing Library
 * file .......: ltiTypes.h
 * authors ....: Pablo Alvarado
 * organization: LTI, RWTH Aachen
 * creation ...: 31.3.99
 * revisions ..: $Id: ltiTypes.h,v 1.5 2006/02/07 18:10:59 ltilib Exp $
 */

#ifndef _LTI_TYPES_H
#define _LTI_TYPES_H

#include "ltiConfig.h"

/** 
 * @file ltiTypes.h
 * This file contains the definitions of the basic types used in the LTI-Lib.
 *
 * Some types are redefined to compensate the lack of specification in
 * the C++ Standard about the byte length of the standard types int,
 * char, float, etc.  In this way an uint32 uses always four bytes,
 * uint16 uses two bytes and so on.
 *
 * The defined basic types are:
 * - lti::ubyte  (1 byte unsigned)
 * - lti::byte   (1 byte signed)
 * - lti::uint16 (2 byte unsigned)
 * - lti::int16  (2 byte signed)
 * - lti::uint32 (4 byte unsigned)
 * - lti::int32  (4 byte signed)
 * - lti::uint64 (8 byte unsigned)
 * - lti::int64  (8 byte signed)
 * - lti::sreal  (4 byte floating point)
 * - lti::dreal  (8 byte floating point)
 */

namespace lti {
  /**
   * 8-bit unsigned type (0..255)
   */
  typedef unsigned _LTI_BYTE ubyte;

  /**
   * 8-bit signed type (-128..127)
   */
  typedef signed _LTI_BYTE byte;

  /**
   * 16-bit unsigned type (0..65535)
   */
  typedef unsigned _LTI_WORD16 uint16;

  /**
   * 16-bit signed type (-32768..32767)
   */
  typedef signed _LTI_WORD16 int16;

  /**
   * 32-bit unsigned type (0..(2^32)-1)
   */
  typedef unsigned _LTI_WORD32 uint32;

  /**
   * 32-bit signed type (-(2^31)..(2^31-1))
   */
  typedef signed _LTI_WORD32 int32;

  /**
   * 64-bit unsigned type (0..(2^64)-1)
   */
  typedef unsigned _LTI_WORD64 uint64;

  /**
   * 64-bit signed type (-(2^63)..(2^63-1))
   */
  typedef signed _LTI_WORD64 int64;

  /**
   * 32-bit floating point type
   */
  typedef float sreal;

  /**
   * 64-bit floating point type
   */
  typedef double dreal;

  const int32 MinInt32 = -0x7fffffff;
  const int32 MaxInt32 = +0x7fffffff;

  const int32 MinInt24 = -0x00800000;
  const int32 MaxInt24 = +0x007fffff;

}

#endif