1 files changed, 0 insertions, 84 deletions
diff --git a/core/numdiff.hpp b/core/numdiff.hpp
deleted file mode 100644
index f9cf520..0000000
--- a/core/numdiff.hpp
+++ /dev/null
@@ -1,84 +0,0 @@
-#ifndef NUMDIFF_HPP
-#define NUMDIFF_HPP
-
-#include <core/optimizer.hpp>
-#include <core/opt_traits.hpp>
-#include <algorithm>
-#include <limits>
-#include <cmath>
-
-namespace opt_utilities
-{
-  template <typename rT,typename pT>
-  class dfunc_obj
-    :public func_obj<rT,pT>
-  {
-  private:
-    virtual pT do_diff(const pT& p)=0;
-    
-  public:
-    pT diff(const pT& p)
-    {
-      return do_diff(p);
-    }
-  };
-  
-  class underivable
-    :public opt_exception
-  {
-  public:
-    underivable()
-      :opt_exception("underivable")
-    {}
-  };
-
-  template <typename rT,typename pT>
-    pT numdiff(func_obj<rT,pT>& f,const pT& p)
-  {
-    rT ep=std::sqrt(std::numeric_limits<rT>::epsilon());
-    
-    pT result;
-    resize(result,get_size(p));
-    pT p2;
-    resize(p2,get_size(p));
-    pT p1;
-    resize(p1,get_size(p));
-    
-    for(size_t i=0;i<get_size(p);++i)
-      {
-	set_element(p2,i,get_element(p,i));
-	set_element(p1,i,get_element(p,i));
-      }
-    for(size_t i=0;i<get_size(p);++i)
-      {
-	typename element_type_trait<pT>::element_type h=
-	  std::max(get_element(p,i),rT(1))*ep;
-	  
-	set_element(p2,i,get_element(p,i)+h);
-	set_element(p1,i,get_element(p,i)-h);
-	
-	rT v2=f(p2);
-	rT v1=f(p1);
-	set_element(result,i,
-		    (v2-v1)/h/2
-		    );
-	set_element(p2,i,get_element(p,i));
-	set_element(p1,i,get_element(p,i));
-      }
-    return result;
-  }
-
-  template <typename rT,typename pT>
-    pT diff(func_obj<rT,pT>& f,const pT& p)
-  {
-    dfunc_obj<rT,pT>* pdf=dynamic_cast<dfunc_obj<rT,pT>*>(&f);
-    if(pdf)
-      {
-	return pdf->diff(p);
-      }
-    return numdiff(f,p);
-    
-  }
-}
-
-#endif