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diff --git a/sysdeps/libm-ieee754/s_cexpf.c b/sysdeps/libm-ieee754/s_cexpf.c
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+/* Return value of complex exponential function for float complex value.
+ 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__ float
+__cexpf (__complex__ float x)
+{
+ __complex__ float retval;
+
+ if (isfinite (__real__ x))
+ {
+ if (isfinite (__imag__ x))
+ {
+ retval = __expf (__real__ x) * (__cosf (__imag__ x)
+ + 1i * __sinf (__imag__ x));
+ }
+ else
+ /* If the imaginary part is +-inf or NaN and the real part is
+ not +-inf the result is NaN + iNan. */
+ retval = __nanf ("") + 1.0i * __nanf ("");
+ }
+ else if (__isinff (__real__ x))
+ {
+ if (isfinite (__imag__ x))
+ {
+ if (signbit (__real__ x) == 0 && __imag__ x == 0.0)
+ retval = HUGE_VALF;
+ else
+ retval = ((signbit (__real__ x) ? 0.0 : HUGE_VALF)
+ * (__cosf (__imag__ x) + 1i * __sinf (__imag__ x)));
+ }
+ else if (signbit (__real__ x))
+ retval = HUGE_VALF + 1.0i * __nanf ("");
+ else
+ retval = 0.0;
+ }
+ else
+ /* If the real part is NaN the result is NaN + iNan. */
+ retval = __nanf ("") + 1.0i * __nanf ("");
+
+ return retval;
+}
+weak_alias (__cexpf, cexpf)