diff --git a/libm/src/s_scalbln.c b/libm/src/s_scalbln.c
new file mode 100644
index 0000000..41908d2
--- /dev/null
+++ b/libm/src/s_scalbln.c
@@ -0,0 +1,76 @@
+/*-
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+/* __FBSDID("$FreeBSD: src/lib/msun/src/s_scalbln.c,v 1.2 2005/03/07 04:57:50 das Exp $"); */
+
+#include <limits.h>
+#include <math.h>
+
+double
+scalbln (double x, long n)
+{
+	int in;
+
+	in = (int)n;
+	if (in != n) {
+		if (n > 0)
+			in = INT_MAX;
+		else
+			in = INT_MIN;
+	}
+	return (scalbn(x, in));
+}
+
+float
+scalblnf (float x, long n)
+{
+	int in;
+
+	in = (int)n;
+	if (in != n) {
+		if (n > 0)
+			in = INT_MAX;
+		else
+			in = INT_MIN;
+	}
+	return (scalbnf(x, in));
+}
+
+long double
+scalblnl (long double x, long n)
+{
+	int in;
+
+	in = (int)n;
+	if (in != n) {
+		if (n > 0)
+			in = INT_MAX;
+		else
+			in = INT_MIN;
+	}
+	return (scalbnl(x, (int)n));
+}