diff --git a/libm/ia64/fenv.c b/libm/ia64/fenv.c
new file mode 100644
index 0000000..182d37e
--- /dev/null
+++ b/libm/ia64/fenv.c
@@ -0,0 +1,49 @@
+/*-
+ * Copyright (c) 2004 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/msun/ia64/fenv.c,v 1.2 2004/06/11 02:35:30 das Exp $
+ */
+
+#include <sys/types.h>
+#include <fenv.h>
+
+const fenv_t __fe_dfl_env = 0x0009804c8a70033fULL;
+
+/*
+ * It doesn't pay to inline feupdateenv() because it includes one of
+ * the rare uses of feraiseexcept() where the argument is not a
+ * constant.  Thus, no dead code elimination can occur, resulting in
+ * significant bloat.
+ */
+int
+feupdateenv(const fenv_t *envp)
+{
+	fenv_t fpsr;
+
+	__stfpsr(&fpsr);
+	__ldfpsr(*envp);
+	feraiseexcept((fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
+	return (0);
+}