From dfdad129a3c6d5437eb001f5fe6d37de3fc07238 Mon Sep 17 00:00:00 2001
From: Benoit Jacob <jacob.benoit.1@gmail.com>
Date: Fri, 28 Dec 2007 16:00:55 +0000
Subject: move Core/ to a src/ subdir, in preparation for following changes

---
 Eigen/src/Core/Fuzzy.h | 91 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Eigen/src/Core/Fuzzy.h

(limited to 'Eigen/src/Core/Fuzzy.h')

diff --git a/Eigen/src/Core/Fuzzy.h b/Eigen/src/Core/Fuzzy.h
new file mode 100644
index 000000000..bd3219568
--- /dev/null
+++ b/Eigen/src/Core/Fuzzy.h
@@ -0,0 +1,91 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen is free software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along
+// with Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_FUZZY_H
+#define EIGEN_FUZZY_H
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+bool MatrixBase<Scalar, Derived>::isApprox(
+  const OtherDerived& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  assert(rows() == other.rows() && cols() == other.cols());
+  if(IsVectorAtCompileTime)
+  {
+    return((*this - other).norm2() <= std::min(norm2(), other.norm2()) * prec * prec);
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if((col(i) - other.col(i)).norm2()
+         > std::min(col(i).norm2(), other.col(i).norm2()) * prec * prec)
+        return false;
+    return true;
+  }
+}
+
+template<typename Scalar, typename Derived>
+bool MatrixBase<Scalar, Derived>::isMuchSmallerThan(
+  const typename NumTraits<Scalar>::Real& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  if(IsVectorAtCompileTime)
+  {
+    return(norm2() <= abs2(other * prec));
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if(col(i).norm2() > abs2(other * prec))
+        return false;
+    return true;
+  }
+}
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+bool MatrixBase<Scalar, Derived>::isMuchSmallerThan(
+  const MatrixBase<Scalar, OtherDerived>& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  assert(rows() == other.rows() && cols() == other.cols());
+  if(IsVectorAtCompileTime)
+  {
+    return(norm2() <= other.norm2() * prec * prec);
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if(col(i).norm2() > other.col(i).norm2() * prec * prec)
+        return false;
+    return true;
+  }
+}
+
+#endif // EIGEN_FUZZY_H
-- 
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