1 files changed, 0 insertions, 89 deletions
diff --git a/math/s_catan.c b/math/s_catan.c
deleted file mode 100644
index 1d0673ad6a..0000000000
--- a/math/s_catan.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* Return arc tangent of complex double 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 Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; 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>
-
-#include "math_private.h"
-
-
-__complex__ double
-__catan (__complex__ double x)
-{
-  __complex__ double res;
-  int rcls = fpclassify (__real__ x);
-  int icls = fpclassify (__imag__ x);
-
-  if (rcls <= FP_INFINITE || icls <= FP_INFINITE)
-    {
-      if (rcls == FP_INFINITE)
-	{
-	  __real__ res = __copysign (M_PI_2, __real__ x);
-	  __imag__ res = __copysign (0.0, __imag__ x);
-	}
-      else if (icls == FP_INFINITE)
-	{
-	  if (rcls >= FP_ZERO)
-	    __real__ res = __copysign (M_PI_2, __real__ x);
-	  else
-	    __real__ res = __nan ("");
-	  __imag__ res = __copysign (0.0, __imag__ x);
-	}
-      else if (icls == FP_ZERO || icls == FP_INFINITE)
-	{
-	  __real__ res = __nan ("");
-	  __imag__ res = __copysign (0.0, __imag__ x);
-	}
-      else
-	{
-	  __real__ res = __nan ("");
-	  __imag__ res = __nan ("");
-	}
-    }
-  else if (rcls == FP_ZERO && icls == FP_ZERO)
-    {
-      res = x;
-    }
-  else
-    {
-      double r2, num, den;
-
-      r2 = __real__ x * __real__ x;
-
-      den = 1 - r2 - __imag__ x * __imag__ x;
-
-      __real__ res = 0.5 * __ieee754_atan2 (2.0 * __real__ x, den);
-
-      num = __imag__ x + 1.0;
-      num = r2 + num * num;
-
-      den = __imag__ x - 1.0;
-      den = r2 + den * den;
-
-      __imag__ res = 0.25 * __ieee754_log (num / den);
-    }
-
-  return res;
-}
-weak_alias (__catan, catan)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__catan, __catanl)
-weak_alias (__catan, catanl)
-#endif