Update the in-tree GMP; fixes trac #832

[ghc-hetmet.git] / rts / gmp / mpz / fdiv_r_2exp.c

diff --git a/rts/gmp/mpz/fdiv_r_2exp.c b/rts/gmp/mpz/fdiv_r_2exp.c
deleted file mode 100644 (file)
index 081ce19..0000000
--- a/rts/gmp/mpz/fdiv_r_2exp.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/* mpz_fdiv_r_2exp -- Divide a integer by 2**CNT and produce a remainder.
-
-Copyright (C) 1991, 1993, 1994, 1995, 1998, 1999, 2000 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 2.1 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; see the file COPYING.LIB.  If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-MA 02111-1307, USA. */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-
-void
-#if __STDC__
-mpz_fdiv_r_2exp (mpz_ptr res, mpz_srcptr in, unsigned long int cnt)
-#else
-mpz_fdiv_r_2exp (res, in, cnt)
-     mpz_ptr res;
-     mpz_srcptr in;
-     unsigned long int cnt;
-#endif
-{
-  mp_size_t in_size = ABS (in->_mp_size);
-  mp_size_t res_size;
-  mp_size_t limb_cnt = cnt / BITS_PER_MP_LIMB;
-  mp_srcptr in_ptr = in->_mp_d;
-
-  if (in_size > limb_cnt)
-    {
-      /* The input operand is (probably) greater than 2**CNT.  */
-      mp_limb_t x;
-
-      x = in_ptr[limb_cnt] & (((mp_limb_t) 1 << cnt % BITS_PER_MP_LIMB) - 1);
-      if (x != 0)
-       {
-         res_size = limb_cnt + 1;
-         if (res->_mp_alloc < res_size)
-           _mpz_realloc (res, res_size);
-
-         res->_mp_d[limb_cnt] = x;
-       }
-      else
-       {
-         res_size = limb_cnt;
-         MPN_NORMALIZE (in_ptr, res_size);
-
-         if (res->_mp_alloc < res_size)
-           _mpz_realloc (res, res_size);
-
-         limb_cnt = res_size;
-       }
-    }
-  else
-    {
-      /* The input operand is smaller than 2**CNT.  We perform a no-op,
-        apart from that we might need to copy IN to RES, and may need
-        to round the result.  */
-      res_size = in_size;
-      if (res->_mp_alloc < res_size)
-       _mpz_realloc (res, res_size);
-
-      limb_cnt = res_size;
-    }
-
-  if (res != in)
-    MPN_COPY (res->_mp_d, in->_mp_d, limb_cnt);
-  in_size = in->_mp_size;
-  res->_mp_size = res_size;
-  if (in_size < 0 && res_size != 0)
-    {
-      /* Result should be 2^CNT - RES */
-      mpz_t tmp;
-      TMP_DECL (marker);
-      TMP_MARK (marker);
-      MPZ_TMP_INIT (tmp, cnt/BITS_PER_MP_LIMB + 2);
-      mpz_set_ui (tmp, 1L);
-      mpz_mul_2exp (tmp, tmp, cnt);
-      mpz_sub (res, tmp, res);
-      TMP_FREE (marker);
-    }
-}
-
-/* This is an alternative ending of the above function using just low-level
-   functions.  Tested, but perhaps excessive?  */
-#if 0
-  if (in->_mp_size < 0 && res_size != 0)
-    {
-      /* Result should be 2^CNT - RES */
-
-      mp_ptr rp;
-
-      limb_cnt = cnt / BITS_PER_MP_LIMB;
-
-      if (res->_mp_alloc <= limb_cnt)
-       _mpz_realloc (res, limb_cnt + 1);
-      rp = PTR(res);
-      if (res_size > limb_cnt)
-       {
-         mpn_nz_neg (rp, rp, res_size);
-         rp[limb_cnt] &= ~(~(mp_limb_t) 0 << cnt % BITS_PER_MP_LIMB);
-         MPN_NORMALIZE_NOT_ZERO (rp, res_size);
-       }
-      else
-       {
-         mp_size_t i;
-         mpn_nz_neg (rp, rp, res_size);
-         for (i = res_size; i < limb_cnt; i++)
-           rp[i] = ~ (mp_limb_t) 0;
-         res_size = limb_cnt;
-         if (cnt % BITS_PER_MP_LIMB != 0)
-           {
-             rp[res_size] = ((mp_limb_t) 1 << (cnt % BITS_PER_MP_LIMB)) - 1;
-             res_size++;
-           }
-         else
-           MPN_NORMALIZE_NOT_ZERO (rp, res_size);
-       }
-    }
-  SIZ(res) = res_size;
-}
-
-static void
-mpn_nz_neg (rp, sp, n)
-     mp_ptr rp, sp;
-     mp_size_t n;
-{
-  mp_size_t i;
-  mp_limb_t x;
-
-  x = sp[0];
-  rp[0] = -x;
-  for (i = 1; x == 0; i++)
-    {
-      x = sp[i];
-      rp[i] = -x;
-    }
-
-  for (; i < n; i++)
-    {
-      rp[i] = ~sp[i];
-    }
-}
-#endif