Программа newton.Cpp

Turbo Profiler Version 2.1 Thu Apr 22 03:45:18 2004

Program: D:\BORLANDC\BIN\PAS_C2.EXE File E:\WORK\8_CEM\METR\LAP_1\PAS_C2.CPP

Time Counts

#include<stdio.h>

#include<math.h>

//newton

0.0000 8 void func(double x, double & fx, double & dfx)

{

0.0000 8 fx = x*x*x-3*x+1;//ўлзЁб«Ґ­ЁҐ §­ зҐ­Ёп дг­ЄжЁЁ

0.0000 8 dfx = 3*x*x - 3; //ўлзЁб«Ґ­ЁҐ §­ зҐ­Ёп Їа®Ё§ў®¤­®©

0.0000 8 }

0.0000 1 void newton(double x) /* newton */

{

0.0000 1 const double tol = 1.0E-9;

0.0000 1 int max = 20;

double fx, dfx, dx, x1;

int i;

char error;

0.0000 1 error = 0;

0.0000 1 i = 0;

do

{

0.0000 8 i = i + 1;

0.0000 8 x1 = x;

0.0000 8 func(x,fx,dfx);

0.0000 8 if (dfx == 0.0)

{

0 0 error = 1;

0 0 x = 1.0;

0 0 printf("%cERROR: slope zero",7);

0 0 }

else

{

0.0000 8 dx = fx/dfx;

0.0000 8 x = x1 - dx;

0.0011 8 printf("x=%f, fx=%f, dfx=%f\n",x,fx,dfx);

}

0.0000 8 }while(!(error || (i > max) || (abs(dx) <= abs(tol*x)) ));

0.0000 1 if (i > max)

{

0 0 printf("%cERROR: no convergence in %d loops\n",7,max);

0 0 error = 1;

}

0.0000 1 } /* newton */

0.0000 1 void main()

{

0.0000 1 double x = 43.356;

0.0000 1 newton(x);//Ї а ¬Ґва x - ЇаЁ¬Ґа­л© Є®аҐ­м

0.0000 1 }

Результаты профилирования по времени newton.cpp

Turbo Profiler Version 2.1 Thu Apr 22 03:45:37 2004

Program: D:\BORLANDC\BIN\PAS_C2.EXE

Execution Profile

Total time: 0.0047 sec

% of total: 26 %

Run: 1 of 1

Filter: All

Show: Time

Sort: Frequency

#PAS_C2#38 0.0011 sec 90% |**********************************************

#PAS_C2#25 0.0000 sec 1% |

#PAS_C2#27 0.0000 sec 1% |

#PAS_C2#37 0.0000 sec <1% |

#PAS_C2#8 0.0000 sec <1% |

#PAS_C2#36 0.0000 sec <1% |

#PAS_C2#7 0.0000 sec <1% |

#PAS_C2#28 0.0000 sec <1% |

#PAS_C2#26 0.0000 sec <1% |

func 0.0000 sec <1% |

#PAS_C2#9 0.0000 sec <1% |

#PAS_C2#40 0.0000 sec <1% |

#PAS_C2#51 0.0000 sec <1% |

#PAS_C2#15 0.0000 sec <1% |

#PAS_C2#21 0.0000 sec <1% |

#PAS_C2#50 0.0000 sec <1% |

#PAS_C2#22 0.0000 sec <1% |

#PAS_C2#41 0.0000 sec <1% |

#PAS_C2#46 0.0000 sec <1% |

_main 0.0000 sec <1% |

#PAS_C2#16 0.0000 sec <1% |

newton 0.0000 sec <1% |

#PAS_C2#52 0.0000 sec <1% |

Результаты профилирования по частоте newton.cpp

Turbo Profiler Version 2.1 Thu Apr 22 03:45:49 2004

Program: D:\BORLANDC\BIN\PAS_C2.EXE

Execution Profile

Total time: 0.0047 sec

% of total: 26 %

Run: 1 of 1

Filter: All

Show: Counts

Sort: Frequency

func 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#7 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#8 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#9 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#28 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#40 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#38 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#37 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#36 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#26 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#25 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

#PAS_C2#27 8 7% |++++++++++++++++++++++++++++++++++++++++++++++

newton 1 <1% |+++++

#PAS_C2#22 1 <1% |+++++

#PAS_C2#21 1 <1% |+++++

#PAS_C2#16 1 <1% |+++++

#PAS_C2#15 1 <1% |+++++

#PAS_C2#41 1 <1% |+++++

#PAS_C2#46 1 <1% |+++++

_main 1 <1% |+++++

#PAS_C2#51 1 <1% |+++++

#PAS_C2#50 1 <1% |+++++

#PAS_C2#52 1 <1% |+++++

Результаты профилирования по средним временам на 1 вызов newton.cpp

Turbo Profiler Version 2.1 Thu Apr 22 03:46:00 2004

Program: D:\BORLANDC\BIN\PAS_C2.EXE

Execution Profile

Total time: 0.0047 sec

% of total: 26 %

Run: 1 of 1

Filter: All

Show: Time per call

Sort: Frequency

#PAS_C2#38 0.0001 sec/call |**********************************************

#PAS_C2#25 0.0000 sec/call |

#PAS_C2#51 0.0000 sec/call |

#PAS_C2#21 0.0000 sec/call |

#PAS_C2#27 0.0000 sec/call |

#PAS_C2#50 0.0000 sec/call |

#PAS_C2#15 0.0000 sec/call |

func 0.0000 sec/call |

#PAS_C2#22 0.0000 sec/call |

#PAS_C2#16 0.0000 sec/call |

#PAS_C2#26 0.0000 sec/call |

newton 0.0000 sec/call |

#PAS_C2#28 0.0000 sec/call |

#PAS_C2#36 0.0000 sec/call |

#PAS_C2#37 0.0000 sec/call |

#PAS_C2#9 0.0000 sec/call |

#PAS_C2#40 0.0000 sec/call |

#PAS_C2#41 0.0000 sec/call |

#PAS_C2#46 0.0000 sec/call |

_main 0.0000 sec/call |

#PAS_C2#7 0.0000 sec/call |

#PAS_C2#8 0.0000 sec/call |

#PAS_C2#52 0.0000 sec/call |