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diff --git a/sysdeps/libm-ieee754/s_cpow.c b/sysdeps/libm-ieee754/s_cpow.c
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+/* Complex power of double values.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <complex.h>
+#include <math.h>
+
+
+__complex__ double
+__cpow (__complex__ double x, __complex__ double c)
+{
+  return __cexp (c * __clog (x));
+}
+weak_alias (__cpow, cpow)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__cpow, __cpowl)
+weak_alias (__cpow, cpowl)
+#endif