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libs/math/example/policy_ref_snip5.cpp

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+//  Copyright John Maddock 2007.
+//  Copyright Paul A. Bristow 2010.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// Note that this file contains quickbook mark-up as well as code
+// and comments, don't change any of the special comment mark-ups!
+
+//[policy_ref_snip5
+
+#include <boost/math/distributions/negative_binomial.hpp>
+using boost::math::negative_binomial_distribution;
+
+using namespace boost::math::policies;
+
+typedef negative_binomial_distribution<
+      double, 
+      policy<discrete_quantile<real> > 
+   > dist_type;
+   
+// Lower 5% quantile:
+double x = quantile(dist_type(20, 0.3), 0.05);
+// Upper 95% quantile:
+double y = quantile(complement(dist_type(20, 0.3), 0.05));
+
+//] //[/policy_ref_snip5]
+
+#include <iostream>
+using std::cout; using std::endl;
+
+int main()
+{
+  cout << "quantile(dist_type(20, 0.3), 0.05)  = " << x 
+    << "\nquantile(complement(dist_type(20, 0.3), 0.05) = " << y << endl;
+}
+
+/*
+
+Output:
+  quantile(dist_type(20, 0.3), 0.05)  = 27.3898
+  quantile(complement(dist_type(20, 0.3), 0.05) = 68.1584
+
+  */
+