Source: classlib/include/classlib/stdtempl.h

/***************************************************************************
    stdtempl.h  -  funzioni templates standard di utilita' generale
                             -------------------
    begin                : ven dic  7 17:40:01 CET 2001
    copyright            : (C) 2001 by Nicola De Nisco
    email                : nicola@winada.it
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
/**

  Implements commonly used template functions min(), max(), range()

      T tmin( T, T ) returns the lesser of its arguments

      T tmin( T, T, T ) returns the least of its arguments

      T tmax( T, T ) returns the greater of its arguments

      T tmax( T, T, T ) returns the greatest of its arguments

      T trange( T minVal, T maxVal, T val ) returns val if val is
          between minVal and maxVal.  If val is greater than maxVal,
          returns maxVal.  If val is less than minVal, returns minVal.

*/

#if !defined( __CLASSLIB_STDTEMPL_H )
#define __CLASSLIB_STDTEMPL_H

#if !defined( __CLASSLIB_DEFS_H )
#include "classlib/defs.h"
#endif  // __CLASSLIB_DEFS_H

#if !defined( __MINMAX_DEFINED )    // avoid conflict with RTL
#define __MINMAX_DEFINED

/**
	Template min function. Return the min value from the supplied one.
*/
template  inline const T& tmin( const T& t1, const T& t2 )
{
    return t1>t2 ? t2 : t1;
}

/**
	Template max function. Return the max value from the supplied one.
*/
template  inline const T& tmax( const T& t1, const T& t2 )
{
    return t1>t2 ? t1 : t2;
}

/**
	Template min function. Return the min value from the supplied one.
*/
template  inline const T& tmin( const T& t1, const T& t2, const T& t3 )
{
    return t1>t2 ? (t2>t3 ? t3 : t2) : (t1>t3 ? t3 : t1 );
}

/**
	Template max function. Return the max value from the supplied one.
*/
template  inline const T& tmax( const T& t1, const T& t2, const T& t3 )
{
    return t1>t2 ? (t1>t3 ? t1 : t3) : (t2>t3 ? t2 : t3);
}

#endif  // __MINMAX_DEFINED

/**
	Template range function. It ensure return value is inside the suppied limits.
*/
template  inline const T& trange( const T& minVal, const T& maxVal, const T& val )
{
    return min( maxVal, max( minVal, val ) );
}

#endif  // __CLASSLIB_STDTEMPL_H