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fvar_a41.cpp
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00001 /*
00002  * $Id: fvar_a41.cpp 1942 2014-04-28 22:22:45Z johnoel $
00003  *
00004  * Author: David Fournier
00005  * Copyright (c) 2008-2012 Regents of the University of California
00006  */
00011 #include "fvar.hpp"
00012 
00017 dvar_vector operator+(const dvar_vector& t1, const double x)
00018   {
00019     return x+t1;
00020   }
00021 
00022   void DF_cdble_dv_add(void);
00023 
00028 dvar_vector operator+(const double x, const dvar_vector& t1)
00029   {
00030     RETURN_ARRAYS_INCREMENT();
00031     dvar_vector tmp(t1.indexmin(),t1.indexmax());
00032     save_identifier_string("wctf");
00033     for (int i=t1.indexmin(); i<=t1.indexmax(); i++)
00034     {
00035       tmp.elem_value(i)=t1.elem_value(i)+x;
00036     }
00037     tmp.save_dvar_vector_position();
00038     t1.save_dvar_vector_position();
00039     save_identifier_string("ddtu");
00040     RETURN_ARRAYS_DECREMENT();
00041     gradient_structure::GRAD_STACK1->set_gradient_stack(DF_cdble_dv_add);
00042     return(tmp);
00043   }
00044 
00049  void DF_cdble_dv_add(void)
00050  {
00051     verify_identifier_string("ddtu");
00052     dvar_vector_position t1_pos=restore_dvar_vector_position();
00053     dvar_vector_position tmp_pos=restore_dvar_vector_position();
00054     dvector dftmp=restore_dvar_vector_derivatives(tmp_pos);
00055     dvector dft1(t1_pos.indexmin(),t1_pos.indexmax());
00056     verify_identifier_string("wctf");
00057     for (int i=t1_pos.indexmax(); i>=t1_pos.indexmin(); i--)
00058     {
00059       // tmp.elem_value(i)=x+t1.elem_value(i);
00060       dft1(i)=dftmp(i);
00061     }
00062     dft1.save_dvector_derivatives(t1_pos);
00063  }