diff --git a/newlib/libm/complex/Makefile.am b/newlib/libm/complex/Makefile.am
index cbbed573a..736a9e039 100644
--- a/newlib/libm/complex/Makefile.am
+++ b/newlib/libm/complex/Makefile.am
@@ -13,7 +13,7 @@ src = cabs.c cacos.c cacosh.c carg.c casin.c casinh.c \
 lsrc = cabsl.c creall.c cimagl.c ccoshl.c cacoshl.c \
        clogl.c csqrtl.c cargl.c cprojl.c cexpl.c \
        cephes_subrl.c cacosl.c ccosl.c casinl.c \
-       catanhl.c
+       catanhl.c conjl.c
 
 fsrc =	cabsf.c casinf.c ccosf.c cimagf.c cprojf.c  \
         csqrtf.c cacosf.c casinhf.c ccoshf.c clogf.c clog10f.c \
diff --git a/newlib/libm/complex/conjl.c b/newlib/libm/complex/conjl.c
new file mode 100755
index 000000000..35094ce89
--- /dev/null
+++ b/newlib/libm/complex/conjl.c
@@ -0,0 +1,46 @@
+/*	$NetBSD: conjl.c,v 1.4 2010/09/20 16:55:20 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
+__RCSID("$NetBSD: conjl.c,v 1.4 2010/09/20 16:55:20 christos Exp $");
+
+#include <complex.h>
+#include "../common/fdlibm.h"
+
+/*
+ * conjl(long double complex z)
+ * This function returns the complex conjugate value of its argument, z.
+ */
+long double complex
+conjl(long double complex z)
+{
+	long_double_complex w = { .z = z };
+
+	IMAG_PART(w) = -IMAG_PART(w);
+
+	return (w.z);
+}