[gcc] GCC 4.5.0=>4.5.1

gcc/gmp/mpf/div.c

Index: gcc/gmp/mpf/div.c
diff --git a/gcc/gmp/mpf/div.c b/gcc/gmp/mpf/div.c
deleted file mode 100644
index ef3675eb346b7baeab6ccd311298c2f48cfd6f9b..0000000000000000000000000000000000000000
--- a/gcc/gmp/mpf/div.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/* mpf_div -- Divide two floats.
-
-Copyright 1993, 1994, 1996, 2000, 2001, 2002, 2004, 2005 Free Software
-Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP 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 3 of the License, or (at your
-option) any later version.
-
-The GNU MP 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 MP Library.  If not, see http://www.gnu.org/licenses/.  */
-
-#include <stdio.h>  /* for NULL */
-#include "gmp.h"
-#include "gmp-impl.h"
-#include "longlong.h"
-
-
-/* Not done:
-
-   No attempt is made to identify an overlap u==v.  The result will be
-   correct (1.0), but a full actual division is done whereas of course
-   x/x==1 needs no work.  Such a call is not a sensible thing to make, and
-   it's left to an application to notice and optimize if it might arise
-   somehow through pointer aliasing or whatever.
-
-   Enhancements:
-
-   The high quotient limb is non-zero when high{up,vsize} >= {vp,vsize}.  We
-   could make that comparison and use qsize==prec instead of qsize==prec+1,
-   to save one limb in the division.
-
-   If r==u but the size is enough bigger than prec that there won't be an
-   overlap between quotient and dividend in mpn_tdiv_qr, then we can avoid
-   copying up,usize.  This would only arise from a prec reduced with
-   mpf_set_prec_raw and will be pretty unusual, but might be worthwhile if
-   it could be worked into the copy_u decision cleanly.
-
-   Future:
-
-   If/when mpn_tdiv_qr supports its qxn parameter we can use that instead of
-   padding u with zeros in temporary space.
-
-   If/when a quotient-only division exists it can be used here immediately.
-   remp is only to satisfy mpn_tdiv_qr, the remainder is not used.  */
-
-void
-mpf_div (mpf_ptr r, mpf_srcptr u, mpf_srcptr v)
-{
-  mp_srcptr up, vp;
-  mp_ptr rp, remp, tp, new_vp;
-  mp_size_t usize, vsize, rsize, prospective_rsize, tsize, zeros, copy_v_size;
-  mp_size_t sign_quotient, prec, high_zero, chop;
-  mp_exp_t rexp;
-  int copy_u;
-  TMP_DECL;
-
-  usize = u->_mp_size;
-  vsize = v->_mp_size;
-  sign_quotient = usize ^ vsize;
-  usize = ABS (usize);
-  vsize = ABS (vsize);
-  prec = r->_mp_prec;
-
-  if (vsize == 0)
-    DIVIDE_BY_ZERO;
-
-  if (usize == 0)
-    {
-      r->_mp_size = 0;
-      r->_mp_exp = 0;
-      return;
-    }
-
-  TMP_MARK;
-  rexp = u->_mp_exp - v->_mp_exp + 1;
-
-  rp = r->_mp_d;
-  up = u->_mp_d;
-  vp = v->_mp_d;
-
-  prospective_rsize = usize - vsize + 1; /* quot from using given u,v sizes */
-  rsize = prec + 1;                      /* desired quot */
-
-  zeros = rsize - prospective_rsize;     /* padding u to give rsize */
-  copy_u = (zeros > 0 || rp == up);      /* copy u if overlap or padding */
-
-  chop = MAX (-zeros, 0);                /* negative zeros means shorten u */
-  up += chop;
-  usize -= chop;
-  zeros += chop;                         /* now zeros >= 0 */
-
-  tsize = usize + zeros;                 /* size for possible copy of u */
-
-  if (WANT_TMP_DEBUG)
-    {
-      /* separate blocks, for malloc debugging */
-      remp = TMP_ALLOC_LIMBS (vsize);
-      tp = (copy_u ? TMP_ALLOC_LIMBS (tsize) : NULL);
-      new_vp = (rp == vp ? TMP_ALLOC_LIMBS (vsize) : NULL);
-    }
-  else
-    {
-      /* one block with conditionalized size, for efficiency */
-      copy_v_size = (rp == vp ? vsize : 0);
-      remp = TMP_ALLOC_LIMBS (vsize + copy_v_size + (copy_u ? tsize : 0));
-      new_vp = remp + vsize;
-      tp = new_vp + copy_v_size;
-    }
-
-  /* copy and possibly extend u if necessary */
-  if (copy_u)
-    {
-      MPN_ZERO (tp, zeros);
-      MPN_COPY (tp+zeros, up, usize);
-      up = tp;
-      usize = tsize;
-    }
-
-  /* ensure divisor doesn't overlap quotient */
-  if (rp == vp)
-    {
-      MPN_COPY (new_vp, vp, vsize);
-      vp = new_vp;
-    }
-
-  ASSERT (usize-vsize+1 == rsize);
-  mpn_tdiv_qr (rp, remp, (mp_size_t) 0, up, usize, vp, vsize);
-
-  /* strip possible zero high limb */
-  high_zero = (rp[rsize-1] == 0);
-  rsize -= high_zero;
-  rexp -= high_zero;
-
-  r->_mp_size = sign_quotient >= 0 ? rsize : -rsize;
-  r->_mp_exp = rexp;
-  TMP_FREE;
-}