diff --git a/Makefile.am b/Makefile.am
index 3d6057cc..1339cb45 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -12,6 +12,7 @@ UTIL_INCLUDE =  \
     debug.hpp   \
     enable_if.hpp   \
     except.hpp  \
+    fixed.hpp	\
     float.hpp	\
     io.hpp	\
     ip.hpp	\
@@ -32,6 +33,7 @@ UTIL_INCLUDE =  \
 UTIL_FILES   =	\
     debug.cpp   \
     except.cpp  \
+    fixed.cpp	\
     float.cpp	\
     io.cpp	\
     ip.cpp	\
diff --git a/fixed.cpp b/fixed.cpp
new file mode 100644
index 00000000..4514f559
--- /dev/null
+++ b/fixed.cpp
@@ -0,0 +1,119 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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 libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2011 Danny Robson <danny@blubinc.net>
+ */
+
+#include "fixed.hpp"
+
+#include <cmath>
+
+/*
+ * Constructors
+ */
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>::fixed (integral_type val):
+    m_value (val << FRAC)
+{
+    static_assert (INT  > 0, "must use positive integer bits");
+    static_assert (FRAC > 0, "must use positive fractional bits");
+}
+
+
+/*
+ * Conversions
+ */
+
+template <unsigned int INT, unsigned int FRAC>
+double
+fixed<INT, FRAC>::to_double (void) const
+    { return m_value / std::pow (2.0, FRAC); }
+
+
+template <unsigned int INT, unsigned int FRAC>
+float
+fixed<INT, FRAC>::to_float (void) const
+    { return m_value / std::pow (2.0f, FRAC); }
+
+
+template <unsigned int INT, unsigned int FRAC>
+typename fixed<INT, FRAC>::integral_type
+fixed<INT, FRAC>::to_integral (void) const
+    { return m_value >> FRAC; }
+
+
+/*
+ * Integral operators
+ */
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>&
+fixed<INT, FRAC>::operator +=(integral_type val) {
+    m_value += val << FRAC;
+    return *this;
+}
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>&
+fixed<INT, FRAC>::operator -=(integral_type val) {
+    m_value -= val << FRAC;
+    return *this;
+}
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>&
+fixed<INT, FRAC>::operator *=(integral_type val) {
+    m_value *= val;
+    return *this;
+}
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>&
+fixed<INT, FRAC>::operator /=(integral_type val) {
+    m_value /= val;
+    return *this;
+}
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>
+fixed<INT, FRAC>::operator +(integral_type val) const
+    { return fixed<INT, FRAC>(m_value + val << FRAC); }
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>
+fixed<INT, FRAC>::operator -(integral_type val) const
+    { return fixed<INT, FRAC>(m_value - val << FRAC); }
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>
+fixed<INT, FRAC>::operator *(integral_type val) const
+    { return fixed<INT, FRAC>(m_value * val); }
+
+
+template <unsigned int INT, unsigned int FRAC>
+fixed<INT, FRAC>
+fixed<INT, FRAC>::operator /(integral_type val) const
+    { return fixed<INT, FRAC>(m_value / val); }
+
+
+template class fixed<16,16>;
+template class fixed<32,32>;
diff --git a/fixed.hpp b/fixed.hpp
new file mode 100644
index 00000000..593f8253
--- /dev/null
+++ b/fixed.hpp
@@ -0,0 +1,65 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim 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 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim 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 libgim.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2011 Danny Robson <danny@blubinc.net>
+ */
+
+#ifndef __UTIL_FIXED_HPP
+#define __UTIL_FIXED_HPP
+
+#include "types.hpp"
+
+#include <cstdint>
+
+template <unsigned int INT, unsigned int FRAC>
+class fixed {
+    public:
+        typedef typename bits_type<INT + FRAC>::uint combined_type;
+        typedef typename bits_type<INT + FRAC>::uint integral_type;
+
+        combined_type m_value;
+
+    public:
+        explicit fixed(double);
+        explicit fixed(float);
+        explicit fixed(integral_type);
+
+        double        to_double   (void) const;
+        float         to_float    (void) const;
+        integral_type to_integral (void) const;
+
+        fixed<INT,FRAC>& operator +=(const fixed<INT,FRAC>);
+        fixed<INT,FRAC>& operator -=(const fixed<INT,FRAC>);
+        fixed<INT,FRAC>& operator *=(const fixed<INT,FRAC>);
+        fixed<INT,FRAC>& operator /=(const fixed<INT,FRAC>);
+
+        fixed<INT,FRAC>  operator +(const fixed<INT,FRAC>) const;
+        fixed<INT,FRAC>  operator -(const fixed<INT,FRAC>) const;
+        fixed<INT,FRAC>  operator *(const fixed<INT,FRAC>) const;
+        fixed<INT,FRAC>  operator /(const fixed<INT,FRAC>) const;
+
+        fixed<INT,FRAC>& operator +=(integral_type);
+        fixed<INT,FRAC>& operator -=(integral_type);
+        fixed<INT,FRAC>& operator *=(integral_type);
+        fixed<INT,FRAC>& operator /=(integral_type);
+
+        fixed<INT,FRAC>  operator +(integral_type) const;
+        fixed<INT,FRAC>  operator -(integral_type) const;
+        fixed<INT,FRAC>  operator *(integral_type) const;
+        fixed<INT,FRAC>  operator /(integral_type) const;
+};
+
+#endif // __UTIL_FIXED_HPP