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-rw-r--r--sysdeps/ieee754/ldbl-128/s_tanhl.c100
1 files changed, 0 insertions, 100 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_tanhl.c b/sysdeps/ieee754/ldbl-128/s_tanhl.c
deleted file mode 100644
index 0db8f5f775..0000000000
--- a/sysdeps/ieee754/ldbl-128/s_tanhl.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/* s_tanhl.c -- long double version of s_tanh.c.
- * Conversion to long double by Ulrich Drepper,
- * Cygnus Support, drepper@cygnus.com.
- */
-
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-/* Changes for 128-bit long double contributed by
-   Stephen L. Moshier <moshier@na-net.ornl.gov> */
-
-/* tanhl(x)
- * Return the Hyperbolic Tangent of x
- *
- * Method :
- *                                      x    -x
- *                                     e  - e
- *      0. tanhl(x) is defined to be -----------
- *                                      x    -x
- *                                     e  + e
- *      1. reduce x to non-negative by tanhl(-x) = -tanhl(x).
- *      2.  0      <= x <= 2**-57 : tanhl(x) := x*(one+x)
- *                                               -t
- *          2**-57 <  x <=  1     : tanhl(x) := -----; t = expm1l(-2x)
- *                                              t + 2
- *                                                    2
- *          1      <= x <=  40.0  : tanhl(x) := 1-  ----- ; t=expm1l(2x)
- *                                                  t + 2
- *          40.0   <  x <= INF    : tanhl(x) := 1.
- *
- * Special cases:
- *      tanhl(NaN) is NaN;
- *      only tanhl(0)=0 is exact for finite argument.
- */
-
-#include <float.h>
-#include <math.h>
-#include <math_private.h>
-
-static const _Float128 one = 1.0, two = 2.0, tiny = L(1.0e-4900);
-
-_Float128
-__tanhl (_Float128 x)
-{
-  _Float128 t, z;
-  u_int32_t jx, ix;
-  ieee854_long_double_shape_type u;
-
-  /* Words of |x|. */
-  u.value = x;
-  jx = u.parts32.w0;
-  ix = jx & 0x7fffffff;
-  /* x is INF or NaN */
-  if (ix >= 0x7fff0000)
-    {
-      /* for NaN it's not important which branch: tanhl(NaN) = NaN */
-      if (jx & 0x80000000)
-	return one / x - one;	/* tanhl(-inf)= -1; */
-      else
-	return one / x + one;	/* tanhl(+inf)=+1 */
-    }
-
-  /* |x| < 40 */
-  if (ix < 0x40044000)
-    {
-      if (u.value == 0)
-	return x;		/* x == +- 0 */
-      if (ix < 0x3fc60000)	/* |x| < 2^-57 */
-	{
-	  math_check_force_underflow (x);
-	  return x * (one + tiny); /* tanh(small) = small */
-	}
-      u.parts32.w0 = ix;	/* Absolute value of x.  */
-      if (ix >= 0x3fff0000)
-	{			/* |x| >= 1  */
-	  t = __expm1l (two * u.value);
-	  z = one - two / (t + two);
-	}
-      else
-	{
-	  t = __expm1l (-two * u.value);
-	  z = -t / (t + two);
-	}
-      /* |x| > 40, return +-1 */
-    }
-  else
-    {
-      z = one - tiny;		/* raised inexact flag */
-    }
-  return (jx & 0x80000000) ? -z : z;
-}
-weak_alias (__tanhl, tanhl)