From a152f015339205e449a54f4512d600bcbb510674 Mon Sep 17 00:00:00 2001
From: astrojhgu <astrojhgu@ed2142bd-67ad-457f-ba7c-d818d4011675>
Date: Fri, 16 Jul 2010 13:34:01 +0000
Subject: git-svn-id: file:///home/svn/opt_utilities@126
 ed2142bd-67ad-457f-ba7c-d818d4011675

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

(limited to 'vmodels')

diff --git a/vmodels/nfw.hpp b/vmodels/nfw.hpp
new file mode 100644
index 0000000..3e4264f
--- /dev/null
+++ b/vmodels/nfw.hpp
@@ -0,0 +1,50 @@
+#ifndef NFW_MODEL_H_
+#define NFW_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+
+namespace opt_utilities
+{
+  template <typename T>
+  class nfw
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    nfw* do_clone()const
+    {
+      return new nfw<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "nfw mass profile";
+    }
+  public:
+    nfw()
+    {
+      this->push_param_info(param_info<optvec<T> >("rho0",1));
+      this->push_param_info(param_info<optvec<T> >("rs",1));
+    }
+
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T rho0=get_element(param,0);
+      T rs=get_element(param,1);
+      return rho0/(x/rs*(x/rs+T(1))*(x/rs+T(1)));
+    }
+
+  private:
+    std::string do_get_information()const
+    {
+      return "NFW mass profile\n"
+	"y=rho0/(x/rs*(1+x/rs)^2)\n";
+    }
+  };
+}
+
+
+
+#endif
+//EOF
-- 
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