/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-    */
/* ex: set filetype=cpp softtabstop=4 shiftwidth=4 tabstop=4 cindent expandtab: */

/*
  $Id: cmnConstants.h,v 1.6 2007/04/26 19:33:57 anton Exp $
  
  Author(s):  Anton Deguet
  Created on: 2005-10-17

  (C) Copyright 2005-2007 Johns Hopkins University (JHU), All Rights
  Reserved.

--- begin cisst license - do not edit ---

This software is provided "as is" under an open source license, with
no warranty.  The complete license can be found in license.txt and
http://www.cisst.org/cisst/license.txt.

--- end cisst license ---

*/


/*!
  \file
  \brief Declaration of various constants
  \ingroup cisstCommon
*/

#ifndef _cmnConstants_h
#define _cmnConstants_h


#include <cisstCommon/cmnExport.h>


/*! PI */
const double cmnPI = 3.1415926535897932384626433832795029;

/*! PI / 2 */
const double cmnPI_2 = 1.5707963267948966192313216916397514;

/*! PI / 4 */
const double cmnPI_4 = 0.7853981633974483096156608458198757;

/*! PI / 180 : convert degrees to radians */
const double cmnPI_180 = cmnPI / 180.0;


#endif // _cmnConstants_h


// ****************************************************************************
//                              Change History
// ****************************************************************************
//
// $Log: cmnConstants.h,v $
// Revision 1.6  2007/04/26 19:33:57  anton
// All files in libraries: Applied new license text, separate copyright and
// updated dates, added standard header where missing.
//
// Revision 1.5  2006/11/20 20:33:19  anton
// Licensing: Applied new license to cisstCommon, cisstVector, cisstNumerical,
// cisstInteractive, cisstImage and cisstOSAbstraction.
//
// Revision 1.4  2006/06/23 17:52:07  ofri
// cmnConstants.h : Added constant cmnPI_180 to convert degrees to radians.
//
// Revision 1.3  2006/01/25 22:16:53  anton
// cmnConstants.h: Removed confusing cmn2_PI following 2006-01-25 meeting.
//
// Revision 1.2  2005/10/24 20:42:24  anton
// cmnConstants: Moved "instantiation" to header file using explicit values.
// This should help the compiler to optimize some code (see #131).
//
// Revision 1.1  2005/10/17 23:50:02  anton
// cmnConstants: Added first version with cmnPI, cmn2_PI, cmnPI_2 and cmnPI_4
// (see ticket #113).
//
//
// ****************************************************************************