randtest.c

关于遗传算法代码。比较全。希望能给大家带来帮助。

    
    counter = 0;
    cout << NFLIPS << " calls to GARandomDouble(0,5)\t";
    for(i=0; i<NFLIPS; i++)
      counter += GARandomDouble(0,5);
    mean = counter/(double)NFLIPS;
    cout << mean << " (should be about 2.5)\n"; cout.flush();
    
    counter = 0;
    cout << NFLIPS << " calls to GARandomDouble(-10,-5)\t";
    for(i=0; i<NFLIPS; i++)
      counter += GARandomDouble(-10,-5);
    mean = counter/(double)NFLIPS;
    cout << mean << " (should be about -7.5)\n"; cout.flush();
        
    counter = 0;
    cout << NFLIPS << " calls to GARandomDouble(-10,10)\t";
    for(i=0; i<NFLIPS; i++)
      counter += GARandomDouble(-10,10);
    mean = counter/(double)NFLIPS;
    cout << mean << " (should be about 0.0)\n"; cout.flush();

    // check means of repeated coin tosses
    
    cout << "\n";
    float ave;
    cout << "[0, 1] with GARandomFloat()...\t\t";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat();
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat();
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat();
    cout << ave/50 << "\n";
    cout.flush();
    
    cout << "[0, 1] with GARandomFloat(0,1)...\t";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,1);
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,1);
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,1);
    cout << ave/50 << "\n";
    cout.flush();
    
    cout << "[0, 100] with GARandomFloat(0,100)...\t";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,100);
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,100);
    cout << ave/50 << " ";
    ave = 0;
    for(i=0; i<50; i++)
      ave += GARandomFloat(0,100);
    cout << ave/50 << "\n";
    cout.flush();
    
    double aved;
    cout << "[0, 1] with GARandomDouble()...\t\t";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble();
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble();
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble();
    cout << aved/50 << "\n";
    cout.flush();
    
    cout << "[0, 1] with GARandomDouble(0,1)...\t";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,1);
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,1);
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,1);
    cout << aved/50 << "\n";
    cout.flush();
    
    cout << "[0, 100] with GARandomDouble(0,100)...\t";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,100);
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,100);
    cout << aved/50 << " ";
    aved = 0;
    for(i=0; i<50; i++)
      aved += GARandomDouble(0,100);
    cout << aved/50 << "\n";
    cout.flush();
    
    cout << "\n";
    
    int count;
    cout << "1% coin flip...\t\t";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.01);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.01);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.01);
    counter = (double)count / (double)i;
    cout << counter << "\n";
    cout.flush();
    
    cout << "25% coin flip...\t";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.25);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.25);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.25);
    counter = (double)count / (double)i;
    cout << counter << "\n";
    cout.flush();

    cout << "50% coin flip...\t";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.5);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.5);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.5);
    counter = (double)count / (double)i;
    cout << counter << "\n";
    cout.flush();
    
    cout << "75% coin flip...\t";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.75);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.75);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.75);
    counter = (double)count / (double)i;
    cout << counter << "\n";
    cout.flush();
    
    cout << "99% coin flip...\t";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.99);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.99);
    counter = (double)count / (double)i;
    cout << counter << " ";
    count = 0;
    for(i=0; i<NFLIPS; i++)
      count += GAFlipCoin(0.99);
    counter = (double)count / (double)i;
    cout << counter << "\n";
    cout.flush();
    
    long lcount;
    cout << "\ncalls to GARandomBit (these should yield 50%)...\n";
    lcount = 0;
    for(i=0; i<NFLIPS; i++)
      lcount += GARandomBit();
    counter = (double)lcount / (double)i;
    cout << counter << " ";
    lcount = 0;
    for(i=0; i<NFLIPS; i++)
      lcount += GARandomBit();
    counter = (double)lcount / (double)i;
    cout << counter << " ";
    lcount = 0;
    for(i=0; i<NFLIPS; i++)
      lcount += GARandomBit();
    counter = (double)lcount / (double)i;
    cout << counter << "\n";
    cout.flush();
  }

// check for values outside of bounds

  if(dobnds) {
    cout << "\n";
    cerr << "bounds test...\n";
    cout << "check for out of bounds...\n";

    long int ii, err;

    int vali;

    cerr << "  " << NUM_CHECKS << "  GARandomInt(-10,5)...\n";
    cout << "GARandomInt(-10,5) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      vali = GARandomInt(-10,5);
      if(vali < -10 || vali > 5){ err += 1; }
    }
    if(err) cout << " " << err << " values out of bounds.\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomInt(0,3)...\n";
    cout << "GARandomInt(0,3) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      vali = GARandomInt(0,3);
      if(vali < 0 || vali > 3){ err += 1; }
    }
    if(err) cout << " " << err << " values out of bounds.\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomInt(200,255)...\n";
    cout << "GARandomInt(200,255) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      vali = GARandomInt(200,255);
      if(vali < 200 || vali > 255){ err += 1; }
    }
    if(err) cout << " " << err << " values out of bounds.\n";
    else cout << "ok\n";
    cout.flush();

    float valf, lastf=0.0;

    cerr << "  " << NUM_CHECKS << "  GARandomFloat(-10,5)...\n";
    cout << "GARandomFloat(-10,5) ..."; cout.flush();
    for(ii=0; ii<NUM_CHECKS; ii++){
      valf = GARandomFloat(-10,5);
      if(valf < -10 || valf > 5){ err += 1; lastf = valf; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastf << ").\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomFloat(0,3)...\n";
    cout << "GARandomFloat(0,3) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      valf = GARandomFloat(0,3);
      if(valf < 0 || valf > 3){ err += 1; lastf = valf; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastf << ").\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomFloat(200,255)...\n";
    cout << "GARandomFloat(200,255) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      valf = GARandomFloat(200,255);
      if(valf < 200 || valf > 255){ err += 1; lastf = valf; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastf << ").\n";
    else cout << "ok\n";
    cout.flush();

    double vald, lastd=0.0;

    cerr << "  " << NUM_CHECKS << "  GARandomDouble(-10,5)...\n";
    cout << "GARandomDouble(-10,5) ..."; cout.flush();
    for(ii=0; ii<NUM_CHECKS; ii++){
      vald = GARandomDouble(-10,5);
      if(vald < -10 || vald > 5){ err += 1; lastd = vald; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastd << ").\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomDouble(0,3)...\n";
    cout << "GARandomDouble(0,3) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      vald = GARandomDouble(0,3);
      if(vald < 0 || vald > 3){ err += 1; lastd = vald; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastd << ").\n";
    else cout << "ok\n";
    cout.flush();
    
    cerr << "  " << NUM_CHECKS << "  GARandomDouble(200,255)...\n";
    cout << "GARandomDouble(200,255) ..."; cout.flush();
    err = 0;
    for(ii=0; ii<NUM_CHECKS; ii++){
      vald = GARandomDouble(200,255);
      if(vald < 200 || vald > 255){ err += 1; lastd = vald; }
    }
    if(err) cout << " " << err << " values out of bounds (" << lastd << ").\n";
    else cout << "ok\n";
    cout.flush();
  }

  return 0;
}