From 474a808f7987462a3a896f7a6a8459df7e2e4dbc Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Tue, 8 May 2012 16:39:58 +1000
Subject: [PATCH] Add exactly_zero call

---
 maths.hpp | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/maths.hpp b/maths.hpp
index 28b2d048..240be79c 100644
--- a/maths.hpp
+++ b/maths.hpp
@@ -88,11 +88,28 @@ almost_equal (const Ta &a, const Tb &b)
     { return a == b; }
 
 
+// Useful for explictly ignore equality warnings
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wfloat-equal"
+template <typename T>
+bool
+exactly_equal (const T &a, const T &b) 
+    { return a == b; }
+#pragma GCC diagnostic pop
+
+
 template <typename T>
 bool
 almost_zero (T a)
     { return almost_equal (a, 0); }
 
+
+template <typename T>
+bool
+exactly_zero (T a)
+    { return exactly_equal (a, static_cast<T> (0)); }
+
+
 const double PI = 3.141592653589793238462643;
 
 inline double
@@ -116,15 +133,6 @@ bool
 almost_equal (const double &a, const double &b);
 
 
-// Useful for explictly ignore equality warnings
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wfloat-equal"
-template <typename T>
-bool
-exactly_equal (const T &a, const T &b) 
-    { return a == b; }
-#pragma GCC diagnostic pop
-
 /// Variadic minimum
 template <typename T>
 const T&