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annotate examples/code/unwinddemo.cc @ 20811:a22d8a2eb0e5

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fix adaptive strategy in ode solvers. * script/ode/ode45.m: remove unused option OutputSave * script/ode/private/integrate_adaptive.m: rewrite algorithm to be more compatible. * script/ode/private/runge_kutta_45_dorpri.m: use kahan summation for time increment.
author Carlo de Falco <carlo.defalco@polimi.it>
date Sun, 11 Oct 2015 18:44:58 +0200
parents 2f8500ca91d3
children
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1 #include <octave/oct.h>
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2 #include <octave/unwind-prot.h>
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3
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4 void
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5 my_err_handler (const char *fmt, ...)
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6 {
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7 // Do nothing!!
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8 }
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10 void
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11 my_err_with_id_handler (const char *id, const char *fmt, ...)
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12 {
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13 // Do nothing!!
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14 }
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15
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16 DEFUN_DLD (unwinddemo, args, nargout, "Unwind Demo")
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17 {
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18 if (args.length () < 2)
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19 print_usage ();
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20
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21 NDArray a = args(0).array_value ();
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22 NDArray b = args(1).array_value ();
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23
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24 // Declare unwind_protect frame which lasts as long as
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25 // the variable frame has scope.
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26 unwind_protect frame;
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27 frame.add_fcn (set_liboctave_warning_handler,
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28 current_liboctave_warning_handler);
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30 frame.add_fcn (set_liboctave_warning_with_id_handler,
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31 current_liboctave_warning_with_id_handler);
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32
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33 set_liboctave_warning_handler (my_err_handler);
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34 set_liboctave_warning_with_id_handler (my_err_with_id_handler);
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35
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36 return octave_value (quotient (a, b));
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37 }