diff --git a/libm/ia64/_fpmath.h b/libm/ia64/_fpmath.h
new file mode 100644
index 0000000..b0e75ed
--- /dev/null
+++ b/libm/ia64/_fpmath.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
+ * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD: src/lib/libc/ia64/_fpmath.h,v 1.6 2005/03/07 04:55:40 das Exp $
+ */
+
+#include <sys/endian.h>
+
+union IEEEl2bits {
+	long double	e;
+	struct {
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+		unsigned int	manl	:32;
+		unsigned int	manh	:32;
+		unsigned int	exp	:15;
+		unsigned int	sign	:1;
+		unsigned long	junk	:48;
+#else /* _BIG_ENDIAN */
+		unsigned long	junk	:48;
+		unsigned int	sign	:1;
+		unsigned int	exp	:15;
+		unsigned int	manh	:32;
+		unsigned int	manl	:32;
+#endif
+	} bits;
+};
+
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+#define	LDBL_NBIT	0x80000000
+#define	mask_nbit_l(u)	((u).bits.manh &= ~LDBL_NBIT)
+#else /* _BIG_ENDIAN */
+/*
+ * XXX This doesn't look right.  Very few machines have a different
+ *     endianness for integers and floating-point, and in nextafterl()
+ *     we assume that none do.  If you have an environment for testing
+ *     this, please let me know. --das
+ */
+#define	LDBL_NBIT	0x80
+#define	mask_nbit_l(u)	((u).bits.manh &= ~LDBL_NBIT)
+#endif
+
+#define	LDBL_MANH_SIZE	32
+#define	LDBL_MANL_SIZE	32
+
+#define	LDBL_TO_ARRAY32(u, a) do {			\
+	(a)[0] = (uint32_t)(u).bits.manl;		\
+	(a)[1] = (uint32_t)(u).bits.manh;		\
+} while(0)