From 5a4dfd8ac3d47ceec08be073b7eaa318ea42e41d Mon Sep 17 00:00:00 2001
From: astrojhgu <astrojhgu@ed2142bd-67ad-457f-ba7c-d818d4011675>
Date: Sun, 29 Nov 2009 16:31:48 +0000
Subject: git-svn-id: file:///home/svn/opt_utilities@100
 ed2142bd-67ad-457f-ba7c-d818d4011675

---
 vmodel/powerlaw.hpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 vmodel/powerlaw.hpp

(limited to 'vmodel/powerlaw.hpp')

diff --git a/vmodel/powerlaw.hpp b/vmodel/powerlaw.hpp
new file mode 100644
index 0000000..1f05301
--- /dev/null
+++ b/vmodel/powerlaw.hpp
@@ -0,0 +1,50 @@
+#ifndef POWER_LAW_MODEL_H_
+#define POWER_LAW_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class powerlaw
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    powerlaw* do_clone()const
+    {
+      return new powerlaw<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "1d power law";
+    }
+  public:
+    powerlaw()
+    {
+      this->push_param_info(param_info<optvec<T> >("Ampl",1));
+      this->push_param_info(param_info<optvec<T> >("gamma",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);
+      return A*pow(x,gamma);
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "Simple power law model\n"
+	"y=A*x^gamma\n";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
-- 
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