From 8b00840169e8c481376f03051327847ae74f842a Mon Sep 17 00:00:00 2001
From: Varun Agrawal <varagrawal@gmail.com>
Date: Mon, 9 Mar 2020 16:33:56 -0400
Subject: [PATCH] removed header bloat and added reference comment for fpEqual
 implementation

---
 gtsam/base/Matrix.h   | 1 +
 gtsam/base/Vector.cpp | 6 +++++-
 gtsam/base/Vector.h   | 2 --
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/gtsam/base/Matrix.h b/gtsam/base/Matrix.h
index 1ee1a6c4a..fa70e5b00 100644
--- a/gtsam/base/Matrix.h
+++ b/gtsam/base/Matrix.h
@@ -17,6 +17,7 @@
  * @author  Frank Dellaert
  * @author  Alex Cunningham
  * @author  Alex Hagiopol
+ * @author  Varun Agrawal
  */
 
 // \callgraph
diff --git a/gtsam/base/Vector.cpp b/gtsam/base/Vector.cpp
index 8c8b15416..beec030ba 100644
--- a/gtsam/base/Vector.cpp
+++ b/gtsam/base/Vector.cpp
@@ -34,7 +34,11 @@ using namespace std;
 
 namespace gtsam {
 
-/* ************************************************************************* */
+/* *************************************************************************
+ * References:
+ * 1. https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
+ * 2. https://floating-point-gui.de/errors/comparison/
+ * ************************************************************************* */
 bool fpEqual(double a, double b, double tol) {
   using std::abs;
   using std::isnan;
diff --git a/gtsam/base/Vector.h b/gtsam/base/Vector.h
index 035a6fa87..576717a0c 100644
--- a/gtsam/base/Vector.h
+++ b/gtsam/base/Vector.h
@@ -27,9 +27,7 @@
 
 #include <gtsam/global_includes.h>
 #include <Eigen/Core>
-#include <cmath>
 #include <iosfwd>
-#include <limits>
 #include <list>
 
 namespace gtsam {