1 files changed, 0 insertions, 129 deletions
diff --git a/math/s_ctan.c b/math/s_ctan.c
deleted file mode 100644
index 8e8bf2e..0000000
--- a/math/s_ctan.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* Complex tangent function for double.
-   Copyright (C) 1997-2016 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, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <complex.h>
-#include <fenv.h>
-#include <math.h>
-#include <math_private.h>
-#include <float.h>
-
-__complex__ double
-__ctan (__complex__ double x)
-{
-  __complex__ double res;
-
-  if (__glibc_unlikely (!isfinite (__real__ x) || !isfinite (__imag__ x)))
-    {
-      if (isinf (__imag__ x))
-	{
-	  if (isfinite (__real__ x) && fabs (__real__ x) > 1.0)
-	    {
-	      double sinrx, cosrx;
-	      __sincos (__real__ x, &sinrx, &cosrx);
-	      __real__ res = __copysign (0.0, sinrx * cosrx);
-	    }
-	  else
-	    __real__ res = __copysign (0.0, __real__ x);
-	  __imag__ res = __copysign (1.0, __imag__ x);
-	}
-      else if (__real__ x == 0.0)
-	{
-	  res = x;
-	}
-      else
-	{
-	  __real__ res = __nan ("");
-	  __imag__ res = __nan ("");
-
-	  if (isinf (__real__ x))
-	    feraiseexcept (FE_INVALID);
-	}
-    }
-  else
-    {
-      double sinrx, cosrx;
-      double den;
-      const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2 / 2);
-
-      /* tan(x+iy) = (sin(2x) + i*sinh(2y))/(cos(2x) + cosh(2y))
-	 = (sin(x)*cos(x) + i*sinh(y)*cosh(y)/(cos(x)^2 + sinh(y)^2). */
-
-      if (__glibc_likely (fabs (__real__ x) > DBL_MIN))
-	{
-	  __sincos (__real__ x, &sinrx, &cosrx);
-	}
-      else
-	{
-	  sinrx = __real__ x;
-	  cosrx = 1.0;
-	}
-
-      if (fabs (__imag__ x) > t)
-	{
-	  /* Avoid intermediate overflow when the real part of the
-	     result may be subnormal.  Ignoring negligible terms, the
-	     imaginary part is +/- 1, the real part is
-	     sin(x)*cos(x)/sinh(y)^2 = 4*sin(x)*cos(x)/exp(2y).  */
-	  double exp_2t = __ieee754_exp (2 * t);
-
-	  __imag__ res = __copysign (1.0, __imag__ x);
-	  __real__ res = 4 * sinrx * cosrx;
-	  __imag__ x = fabs (__imag__ x);
-	  __imag__ x -= t;
-	  __real__ res /= exp_2t;
-	  if (__imag__ x > t)
-	    {
-	      /* Underflow (original imaginary part of x has absolute
-		 value > 2t).  */
-	      __real__ res /= exp_2t;
-	    }
-	  else
-	    __real__ res /= __ieee754_exp (2 * __imag__ x);
-	}
-      else
-	{
-	  double sinhix, coshix;
-	  if (fabs (__imag__ x) > DBL_MIN)
-	    {
-	      sinhix = __ieee754_sinh (__imag__ x);
-	      coshix = __ieee754_cosh (__imag__ x);
-	    }
-	  else
-	    {
-	      sinhix = __imag__ x;
-	      coshix = 1.0;
-	    }
-
-	  if (fabs (sinhix) > fabs (cosrx) * DBL_EPSILON)
-	    den = cosrx * cosrx + sinhix * sinhix;
-	  else
-	    den = cosrx * cosrx;
-	  __real__ res = sinrx * cosrx / den;
-	  __imag__ res = sinhix * coshix / den;
-	}
-      math_check_force_underflow_complex (res);
-    }
-
-  return res;
-}
-weak_alias (__ctan, ctan)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__ctan, __ctanl)
-weak_alias (__ctan, ctanl)
-#endif