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diff --git a/ext/fputils/include/fputils/fptypes.h b/ext/fputils/include/fputils/fptypes.h
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+/*
+ * Copyright (c) 2014, Andreas Sandberg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _FPTYPES_H
+#define _FPTYPES_H 1
+
+#include <stdint.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @addtogroup fp64
+ * @{
+ */
+
+/** Internal representation of a 64-bit float */
+typedef union {
+    /**
+     * Raw value exposed as an unsigned integer. Mainly used for bit
+     * manipulation.
+     */
+    uint64_t bits;
+    /** Representation using the built-in double type */
+    double value;
+} fp64_t;
+
+/** @} */
+
+
+/**
+ * @addtogroup fp80
+ * @{
+ */
+
+/** Internal representation of an 80-bit float. */
+typedef union  {
+    struct {
+        /** Raw representation of the integer part bit and the
+         * fraction. Note that unlike 64-bit floating point
+         * representations the integer bit is explicit. */
+        uint64_t fi;
+        /** Raw representation of sign bit and exponent */
+        uint16_t se;
+    } repr;
+    /**
+     * Represented as a char array, mainly intended for debug dumping
+     * and serialization.
+     */
+    char bits[10];
+} fp80_t;
+
+/** @} */
+
+#ifdef  __cplusplus
+} /* extern "C" */
+#endif
+
+#endif