From 156a31b0e91c178ddb4d422fc5f27e98d3bbd032 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 25 Nov 2010 18:00:30 +0100
Subject: [PATCH] fully implement scalar_fuzzy_impl<bool> as, e.g., the missing
 isMuchSmallerThan is convenient to filter out false values.

---
 Eigen/src/Core/MathFunctions.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index 990509d48..6651b6535 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -862,10 +862,24 @@ template<> struct random_impl<bool>
 
 template<> struct scalar_fuzzy_impl<bool>
 {
+  typedef bool RealScalar;
+  
+  template<typename OtherScalar>
+  static inline bool isMuchSmallerThan(const bool& x, const bool&, const bool&)
+  {
+    return !x;
+  }
+  
   static inline bool isApprox(bool x, bool y, bool)
   {
     return x == y;
   }
+
+  static inline bool isApproxOrLessThan(const bool& x, const bool& y, const bool&)
+  {
+    return (!x) || y;
+  }
+  
 };
 
 } // end namespace internal