[gcc] GCC 4.5.0=>4.5.1

gcc/mpfr/factorial.c

Index: gcc/mpfr/factorial.c
diff --git a/gcc/mpfr/factorial.c b/gcc/mpfr/factorial.c
deleted file mode 100644
index 4cfb3238d465ae22eae32335b3e154760a10df28..0000000000000000000000000000000000000000
--- a/gcc/mpfr/factorial.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/* mpfr_fac_ui -- factorial of a non-negative integer
-
-Copyright 2001, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-Contributed by the Arenaire and Cacao projects, INRIA.
-
-This file is part of the GNU MPFR Library.
-
-The GNU MPFR 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 MPFR 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 MPFR Library; see the file COPYING.LIB.  If not, write to
-the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-MA 02110-1301, USA. */
-
-#define MPFR_NEED_LONGLONG_H
-#include "mpfr-impl.h"
-
- /* The computation of n! is done by
-
-    n!=prod^{n}_{i=1}i
- */
-
-/* FIXME: efficient problems with large arguments; see comments in gamma.c. */
-
-int
-mpfr_fac_ui (mpfr_ptr y, unsigned long int x, mp_rnd_t rnd_mode)
-{
-  mpfr_t t;       /* Variable of Intermediary Calculation*/
-  unsigned long i;
-  int round, inexact;
-
-  mp_prec_t Ny;   /* Precision of output variable */
-  mp_prec_t Nt;   /* Precision of Intermediary Calculation variable */
-  mp_prec_t err;  /* Precision of error */
-
-  mp_rnd_t rnd;
-  MPFR_SAVE_EXPO_DECL (expo);
-  MPFR_ZIV_DECL (loop);
-
-  /***** test x = 0  and x == 1******/
-  if (MPFR_UNLIKELY (x <= 1))
-    return mpfr_set_ui (y, 1, rnd_mode); /* 0! = 1 and 1! = 1 */
-
-  MPFR_SAVE_EXPO_MARK (expo);
-
-  /* Initialisation of the Precision */
-  Ny = MPFR_PREC (y);
-
-  /* compute the size of intermediary variable */
-  Nt = Ny + 2 * MPFR_INT_CEIL_LOG2 (x) + 7;
-
-  mpfr_init2 (t, Nt); /* initialise of intermediary variable */
-
-  rnd = GMP_RNDZ;
-  MPFR_ZIV_INIT (loop, Nt);
-  for (;;)
-    {
-      /* compute factorial */
-      inexact = mpfr_set_ui (t, 1, rnd);
-      for (i = 2 ; i <= x ; i++)
-        {
-          round = mpfr_mul_ui (t, t, i, rnd);
-          /* assume the first inexact product gives the sign
-             of difference: is that always correct? */
-          if (inexact == 0)
-            inexact = round;
-        }
-
-      err = Nt - 1 - MPFR_INT_CEIL_LOG2 (Nt);
-
-      round = !inexact || mpfr_can_round (t, err, rnd, GMP_RNDZ,
-                                          Ny + (rnd_mode == GMP_RNDN));
-
-      if (MPFR_LIKELY (round))
-        {
-          /* If inexact = 0, then t is exactly x!, so round is the
-             correct inexact flag.
-             Otherwise, t != x! since we rounded to zero or away. */
-          round = mpfr_set (y, t, rnd_mode);
-          if (inexact == 0)
-            {
-              inexact = round;
-              break;
-            }
-          else if ((inexact < 0 && round <= 0)
-                   || (inexact > 0 && round >= 0))
-            break;
-          else /* inexact and round have opposite signs: we cannot
-                  compute the inexact flag. Restart using the
-                  symmetric rounding. */
-            rnd = (rnd == GMP_RNDZ) ? GMP_RNDU : GMP_RNDZ;
-        }
-      MPFR_ZIV_NEXT (loop, Nt);
-      mpfr_set_prec (t, Nt);
-    }
-  MPFR_ZIV_FREE (loop);
-
-  mpfr_clear (t);
-  MPFR_SAVE_EXPO_FREE (expo);
-  return mpfr_check_range (y, inexact, rnd_mode);
-}
-
-
-
-