From ca0c4dc55821d4ce5231132806c27ef4a87a895b Mon Sep 17 00:00:00 2001
From: astrojhgu <astrojhgu@ed2142bd-67ad-457f-ba7c-d818d4011675>
Date: Fri, 2 Mar 2012 10:06:04 +0000
Subject: git-svn-id: file:///home/svn/opt_utilities@228
 ed2142bd-67ad-457f-ba7c-d818d4011675

---
 vmodels/exp_bkg.hpp | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 vmodels/pl_bkg.hpp  | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 vmodels/exp_bkg.hpp
 create mode 100644 vmodels/pl_bkg.hpp

diff --git a/vmodels/exp_bkg.hpp b/vmodels/exp_bkg.hpp
new file mode 100644
index 0000000..d2c7c7e
--- /dev/null
+++ b/vmodels/exp_bkg.hpp
@@ -0,0 +1,62 @@
+/**
+   \file exp_bkg.hpp
+   \brief power law model
+   \author Junhua Gu
+ */
+
+
+#ifndef EXP_BKG_MODEL_H_
+#define EXP_BKG_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class exp_bkg
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    exp_bkg* do_clone()const
+    {
+      return new exp_bkg<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "exp with bkg";
+    }
+  public:
+    exp_bkg()
+    {
+      this->push_param_info(param_info<optvec<T> >("Ampl",1));
+      this->push_param_info(param_info<optvec<T> >("scale",1));
+      this->push_param_info(param_info<optvec<T> >("bkg",1));
+      
+    }
+
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T A=get_element(param,0);
+      T scale=get_element(param,1);
+      T bkg=get_element(param,2);
+      return A*exp(-x/abs(scale))+bkg;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+#ifdef WITH_OPT_DOC
+#include <model_doc/exp_bkg.info>
+#endif
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
diff --git a/vmodels/pl_bkg.hpp b/vmodels/pl_bkg.hpp
new file mode 100644
index 0000000..3b787b9
--- /dev/null
+++ b/vmodels/pl_bkg.hpp
@@ -0,0 +1,61 @@
+/**
+   \file pl_bkg.hpp
+   \brief power law model
+   \author Junhua Gu
+ */
+
+
+#ifndef POWER_LAW_BKG_MODEL_H_
+#define POWER_LAW_BKG_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class pl_bkg
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    pl_bkg* do_clone()const
+    {
+      return new pl_bkg<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "power law with bkg";
+    }
+  public:
+    pl_bkg()
+    {
+      this->push_param_info(param_info<optvec<T> >("Ampl",1));
+      this->push_param_info(param_info<optvec<T> >("gamma",1));
+      this->push_param_info(param_info<optvec<T> >("bkg",1));
+    }
+
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T A=get_element(param,0);
+      T gamma=get_element(param,1);
+      T bkg=get_element(param,2);
+      return A*pow(x,gamma)+bkg;
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+#ifdef WITH_OPT_DOC
+#include <model_doc/pl_bkg.info>
+#endif
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
-- 
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