From f0238cfb6997c4acfc2bd200de7295f3fa36968f Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 3 Mar 2019 21:09:10 +0100
Subject: don't index Eigen

---
 eigen/doc/examples/make_circulant2.cpp | 52 ----------------------------------
 1 file changed, 52 deletions(-)
 delete mode 100644 eigen/doc/examples/make_circulant2.cpp

(limited to 'eigen/doc/examples/make_circulant2.cpp')

diff --git a/eigen/doc/examples/make_circulant2.cpp b/eigen/doc/examples/make_circulant2.cpp
deleted file mode 100644
index 95d3dd3..0000000
--- a/eigen/doc/examples/make_circulant2.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-#include <Eigen/Core>
-#include <iostream>
-
-using namespace Eigen;
-
-// [circulant_func]
-template<class ArgType>
-class circulant_functor {
-  const ArgType &m_vec;
-public:
-  circulant_functor(const ArgType& arg) : m_vec(arg) {}
-
-  const typename ArgType::Scalar& operator() (Index row, Index col) const {
-    Index index = row - col;
-    if (index < 0) index += m_vec.size();
-    return m_vec(index);
-  }
-};
-// [circulant_func]
-
-// [square]
-template<class ArgType>
-struct circulant_helper {
-  typedef Matrix<typename ArgType::Scalar,
-                 ArgType::SizeAtCompileTime,
-                 ArgType::SizeAtCompileTime,
-                 ColMajor,
-                 ArgType::MaxSizeAtCompileTime,
-                 ArgType::MaxSizeAtCompileTime> MatrixType;
-};
-// [square]
-
-// [makeCirculant]
-template <class ArgType>
-CwiseNullaryOp<circulant_functor<ArgType>, typename circulant_helper<ArgType>::MatrixType>
-makeCirculant(const Eigen::MatrixBase<ArgType>& arg)
-{
-  typedef typename circulant_helper<ArgType>::MatrixType MatrixType;
-  return MatrixType::NullaryExpr(arg.size(), arg.size(), circulant_functor<ArgType>(arg.derived()));
-}
-// [makeCirculant]
-
-// [main]
-int main()
-{
-  Eigen::VectorXd vec(4);
-  vec << 1, 2, 4, 8;
-  Eigen::MatrixXd mat;
-  mat = makeCirculant(vec);
-  std::cout << mat << std::endl;
-}
-// [main]
-- 
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