test/time_measure_test.cc
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     1 /* -*- C++ -*-
       
     2  *
       
     3  * This file is a part of LEMON, a generic C++ optimization library
       
     4  *
       
     5  * Copyright (C) 2003-2008
       
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
       
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
       
     8  *
       
     9  * Permission to use, modify and distribute this software is granted
       
    10  * provided that this copyright notice appears in all copies. For
       
    11  * precise terms see the accompanying LICENSE file.
       
    12  *
       
    13  * This software is provided "AS IS" with no warranty of any kind,
       
    14  * express or implied, and with no claim as to its suitability for any
       
    15  * purpose.
       
    16  *
       
    17  */
       
    18 
       
    19 #include <lemon/time_measure.h>
       
    20 
       
    21 ///\file \brief Test cases for time_measure.h
       
    22 ///
       
    23 ///\todo To be extended
       
    24 
       
    25 
       
    26 using namespace lemon;
       
    27 
       
    28 void f() 
       
    29 {
       
    30   double d=0;
       
    31   for(int i=0;i<1000;i++)
       
    32     d+=0.1;
       
    33 }
       
    34 
       
    35 void g() 
       
    36 {
       
    37   static Timer T;
       
    38   
       
    39   for(int i=0;i<1000;i++)
       
    40     TimeStamp x(T);
       
    41 }
       
    42 
       
    43 int main()
       
    44 {
       
    45   Timer T;
       
    46   unsigned int n;
       
    47   for(n=0;T.realTime()<1.0;n++) ;
       
    48   std::cout << T << " (" << n << " time queries)\n";
       
    49   T.restart();
       
    50   while(T.realTime()<2.0) ;
       
    51   std::cout << T << '\n';
       
    52   TimeStamp full;
       
    53   TimeStamp t;
       
    54   t=runningTimeTest(f,1,&n,&full);
       
    55   std::cout << t << " (" << n << " tests)\n";
       
    56   std::cout << "Total: " << full << "\n";
       
    57   
       
    58   t=runningTimeTest(g,1,&n,&full);
       
    59   std::cout << t << " (" << n << " tests)\n";
       
    60   std::cout << "Total: " << full << "\n";
       
    61   
       
    62   return 0;
       
    63 }