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general/SUtil.h

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/* #start# ***********************************************************

           Scheduling Simulator
        Lehrstuhl f"ur Effiziente Algorithmen
           Technische Universit"at M"unchen

 File    : $Id: SUtil.h,v 1.5 2003/03/13 19:23:58 taeubig Exp $

 Purpose : several small useful functions ... e.g. for debugging

 RCS-Log:
 $Log: SUtil.h,v $
 Revision 1.5  2003/03/13 19:23:58  taeubig
 prob.dists in new dir, other changes, removed log messages

 Revision 1.4  2003/01/08 18:57:12  meierb
 added randomized release times

 Revision 1.1.1.1  2002/12/02 22:26:19  meierb
 my_schedule

 Revision 1.2  2002/11/09 02:51:03  taeubig
 Replaced <iostream.h> header inclusion by <iostream>, cerr by std::cerr...

 Revision 1.1  2002/08/29 12:59:58  taeubig
 Added the sources

 Revision 1.6  2000/05/24 12:28:52  taeubig
 New compiler (gcc-2.95) and new Qt (2.1)
 Replaced "list" by "leda_list" etc.

 Revision 1.5  1999/12/02 13:11:11  zoidl
 visual errorMsg()

 Revision 1.4  1999/11/03 08:12:00  schickin
 Use of macros NOCOPY and DUMMYIO clarified

 Revision 1.3  1999/10/06 13:37:07  zoidl
 added errorMsg

 Revision 1.2  1999/04/27 13:38:53  schickin
 well folks, that's the first demo version that really runs 8-)

 Revision 1.1  1999/02/10 15:53:32  hall
 TypeInfo, Observer works


 * #end# ************************************************************* */
 
#ifndef SUTIL_H
#define SUTIL_H 

// system header files
#include <iostream>
#include <cmath>

#include <LEDA/string.h>

extern int myInfoFlag;

#define SPEEDUP false

#define NODBG false
#define NOINFO false

#define dbgOn true

#define DBG \
        if( (!NODBG) && dbgOn ) \
          std::cerr << "Debug: line " << __LINE__ << " of " << __FILE__ << ": "

#define DBGX \
        if( (!NODBG) && dbgOn ) \
          std::cerr

#define dbgVar(name, val) \
        if( (!NODBG) && dbgOn ) \
        { \
    std::cerr << "Debug: line " << __LINE__ << " of " << __FILE__ << ": " \
         << name << " = " << val << std::endl; \
  }




#define infoVar(m, name, val) \
        if( (!NOINFO) && (myInfoFlag >= m) ) \
        { \
      std::cout << name << " = " << val << std::endl; \
  }

inline void die(const leda_string& s)
{
  std::cerr << s << std::endl;
  exit(1);
}

// default: error messages are copied to stderr
/* inline void errorMsgSTDERR(const leda_string& caption, const leda_string& message)
{
  std::cerr << caption << ": " << message << std::endl;
}
*/

// function pointer can be redirected to any function, that matches this 
// prototype
// the default is set in SUtil.cpp
// extern void (*errorMsg)(const leda_string&, const leda_string&);

template <class T>
inline T sgn(T x)
{
  return (x < 0) ? -1 : ((x == 0) ? 0 : 1);
}

// a new mins, which allow constant arguments
inline int min(int a, int b)
{
  return (a < b) ? a : b;
}

inline double min(double a, double b)
{
  return (a < b) ? a : b;
}

#define NOCOPY(classname) \
  classname(classname&)

#define DUMMYIO(classname) \
class foo { \
  friend std::ostream& operator<<(std::ostream& os, const foo&) \
    { assert( 0 && "Not implemented." ); return os; }; \
  friend std::istream& operator>>(std::istream& is, foo&) \
    { assert( 0 && "Not implemented." ); return is; }; \
}

#endif

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