Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 0 insertions, 210 deletions

diff --git a/sysdeps/ieee754/ldbl-96/e_gammal_r.c b/sysdeps/ieee754/ldbl-96/e_gammal_r.c
deleted file mode 100644
index 7e42cc1161..0000000000
--- a/sysdeps/ieee754/ldbl-96/e_gammal_r.c
+++ /dev/null
@@ -1,210 +0,0 @@
-/* Implementation of gamma function according to ISO C.
-   Copyright (C) 1997-2017 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 <math.h>
-#include <math_private.h>
-#include <float.h>
-
-/* Coefficients B_2k / 2k(2k-1) of x^-(2k-1) inside exp in Stirling's
-   approximation to gamma function.  */
-
-static const long double gamma_coeff[] =
-  {
-    0x1.5555555555555556p-4L,
-    -0xb.60b60b60b60b60bp-12L,
-    0x3.4034034034034034p-12L,
-    -0x2.7027027027027028p-12L,
-    0x3.72a3c5631fe46aep-12L,
-    -0x7.daac36664f1f208p-12L,
-    0x1.a41a41a41a41a41ap-8L,
-    -0x7.90a1b2c3d4e5f708p-8L,
-  };
-
-#define NCOEFF (sizeof (gamma_coeff) / sizeof (gamma_coeff[0]))
-
-/* Return gamma (X), for positive X less than 1766, in the form R *
-   2^(*EXP2_ADJ), where R is the return value and *EXP2_ADJ is set to
-   avoid overflow or underflow in intermediate calculations.  */
-
-static long double
-gammal_positive (long double x, int *exp2_adj)
-{
-  int local_signgam;
-  if (x < 0.5L)
-    {
-      *exp2_adj = 0;
-      return __ieee754_expl (__ieee754_lgammal_r (x + 1, &local_signgam)) / x;
-    }
-  else if (x <= 1.5L)
-    {
-      *exp2_adj = 0;
-      return __ieee754_expl (__ieee754_lgammal_r (x, &local_signgam));
-    }
-  else if (x < 7.5L)
-    {
-      /* Adjust into the range for using exp (lgamma).  */
-      *exp2_adj = 0;
-      long double n = __ceill (x - 1.5L);
-      long double x_adj = x - n;
-      long double eps;
-      long double prod = __gamma_productl (x_adj, 0, n, &eps);
-      return (__ieee754_expl (__ieee754_lgammal_r (x_adj, &local_signgam))
-	      * prod * (1.0L + eps));
-    }
-  else
-    {
-      long double eps = 0;
-      long double x_eps = 0;
-      long double x_adj = x;
-      long double prod = 1;
-      if (x < 13.0L)
-	{
-	  /* Adjust into the range for applying Stirling's
-	     approximation.  */
-	  long double n = __ceill (13.0L - x);
-	  x_adj = x + n;
-	  x_eps = (x - (x_adj - n));
-	  prod = __gamma_productl (x_adj - n, x_eps, n, &eps);
-	}
-      /* The result is now gamma (X_ADJ + X_EPS) / (PROD * (1 + EPS)).
-	 Compute gamma (X_ADJ + X_EPS) using Stirling's approximation,
-	 starting by computing pow (X_ADJ, X_ADJ) with a power of 2
-	 factored out.  */
-      long double exp_adj = -eps;
-      long double x_adj_int = __roundl (x_adj);
-      long double x_adj_frac = x_adj - x_adj_int;
-      int x_adj_log2;
-      long double x_adj_mant = __frexpl (x_adj, &x_adj_log2);
-      if (x_adj_mant < M_SQRT1_2l)
-	{
-	  x_adj_log2--;
-	  x_adj_mant *= 2.0L;
-	}
-      *exp2_adj = x_adj_log2 * (int) x_adj_int;
-      long double ret = (__ieee754_powl (x_adj_mant, x_adj)
-			 * __ieee754_exp2l (x_adj_log2 * x_adj_frac)
-			 * __ieee754_expl (-x_adj)
-			 * __ieee754_sqrtl (2 * M_PIl / x_adj)
-			 / prod);
-      exp_adj += x_eps * __ieee754_logl (x_adj);
-      long double bsum = gamma_coeff[NCOEFF - 1];
-      long double x_adj2 = x_adj * x_adj;
-      for (size_t i = 1; i <= NCOEFF - 1; i++)
-	bsum = bsum / x_adj2 + gamma_coeff[NCOEFF - 1 - i];
-      exp_adj += bsum / x_adj;
-      return ret + ret * __expm1l (exp_adj);
-    }
-}
-
-long double
-__ieee754_gammal_r (long double x, int *signgamp)
-{
-  u_int32_t es, hx, lx;
-  long double ret;
-
-  GET_LDOUBLE_WORDS (es, hx, lx, x);
-
-  if (__glibc_unlikely (((es & 0x7fff) | hx | lx) == 0))
-    {
-      /* Return value for x == 0 is Inf with divide by zero exception.  */
-      *signgamp = 0;
-      return 1.0 / x;
-    }
-  if (__glibc_unlikely (es == 0xffffffff && ((hx & 0x7fffffff) | lx) == 0))
-    {
-      /* x == -Inf.  According to ISO this is NaN.  */
-      *signgamp = 0;
-      return x - x;
-    }
-  if (__glibc_unlikely ((es & 0x7fff) == 0x7fff))
-    {
-      /* Positive infinity (return positive infinity) or NaN (return
-	 NaN).  */
-      *signgamp = 0;
-      return x + x;
-    }
-  if (__builtin_expect ((es & 0x8000) != 0, 0) && __rintl (x) == x)
-    {
-      /* Return value for integer x < 0 is NaN with invalid exception.  */
-      *signgamp = 0;
-      return (x - x) / (x - x);
-    }
-
-  if (x >= 1756.0L)
-    {
-      /* Overflow.  */
-      *signgamp = 0;
-      return LDBL_MAX * LDBL_MAX;
-    }
-  else
-    {
-      SET_RESTORE_ROUNDL (FE_TONEAREST);
-      if (x > 0.0L)
-	{
-	  *signgamp = 0;
-	  int exp2_adj;
-	  ret = gammal_positive (x, &exp2_adj);
-	  ret = __scalbnl (ret, exp2_adj);
-	}
-      else if (x >= -LDBL_EPSILON / 4.0L)
-	{
-	  *signgamp = 0;
-	  ret = 1.0L / x;
-	}
-      else
-	{
-	  long double tx = __truncl (x);
-	  *signgamp = (tx == 2.0L * __truncl (tx / 2.0L)) ? -1 : 1;
-	  if (x <= -1766.0L)
-	    /* Underflow.  */
-	    ret = LDBL_MIN * LDBL_MIN;
-	  else
-	    {
-	      long double frac = tx - x;
-	      if (frac > 0.5L)
-		frac = 1.0L - frac;
-	      long double sinpix = (frac <= 0.25L
-				    ? __sinl (M_PIl * frac)
-				    : __cosl (M_PIl * (0.5L - frac)));
-	      int exp2_adj;
-	      ret = M_PIl / (-x * sinpix
-			     * gammal_positive (-x, &exp2_adj));
-	      ret = __scalbnl (ret, -exp2_adj);
-	      math_check_force_underflow_nonneg (ret);
-	    }
-	}
-    }
-  if (isinf (ret) && x != 0)
-    {
-      if (*signgamp < 0)
-	return -(-__copysignl (LDBL_MAX, ret) * LDBL_MAX);
-      else
-	return __copysignl (LDBL_MAX, ret) * LDBL_MAX;
-    }
-  else if (ret == 0)
-    {
-      if (*signgamp < 0)
-	return -(-__copysignl (LDBL_MIN, ret) * LDBL_MIN);
-      else
-	return __copysignl (LDBL_MIN, ret) * LDBL_MIN;
-    }
-  else
-    return ret;
-}
-strong_alias (__ieee754_gammal_r, __gammal_r_finite)