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diff --git a/rts/gmp/mpz/com.c b/rts/gmp/mpz/com.c
deleted file mode 100644
index 18d6427..0000000
--- a/rts/gmp/mpz/com.c
+++ /dev/null
@@ -1,93 +0,0 @@
-/* mpz_com(mpz_ptr dst, mpz_ptr src) -- Assign the bit-complemented value of
-   SRC to DST.
-
-Copyright (C) 1991, 1993, 1994, 1996 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_com (mpz_ptr dst, mpz_srcptr src)
-#else
-mpz_com (dst, src)
-     mpz_ptr dst;
-     mpz_srcptr src;
-#endif
-{
-  mp_size_t size = src->_mp_size;
-  mp_srcptr src_ptr;
-  mp_ptr dst_ptr;
-
-  if (size >= 0)
-    {
-      /* As with infinite precision: one's complement, two's complement.
-	 But this can be simplified using the identity -x = ~x + 1.
-	 So we're going to compute (~~x) + 1 = x + 1!  */
-
-      if (dst->_mp_alloc < size + 1)
-	_mpz_realloc (dst, size + 1);
-
-      src_ptr = src->_mp_d;
-      dst_ptr = dst->_mp_d;
-
-      if (size == 0)
-	{
-	  /* Special case, as mpn_add wants the first arg's size >= the
-	     second arg's size.  */
-	  dst_ptr[0] = 1;
-	  dst->_mp_size = -1;
-	  return;
-	}
-
-      {
-	mp_limb_t cy;
-
-	cy = mpn_add_1 (dst_ptr, src_ptr, size, (mp_limb_t) 1);
-	if (cy)
-	  {
-	    dst_ptr[size] = cy;
-	    size++;
-	  }
-      }
-
-      /* Store a negative size, to indicate ones-extension.  */
-      dst->_mp_size = -size;
-    }
-  else
-    {
-      /* As with infinite precision: two's complement, then one's complement.
-	 But that can be simplified using the identity -x = ~(x - 1).
-	 So we're going to compute ~~(x - 1) = x - 1!  */
-      size = -size;
-
-      if (dst->_mp_alloc < size)
-	_mpz_realloc (dst, size);
-
-      src_ptr = src->_mp_d;
-      dst_ptr = dst->_mp_d;
-
-      mpn_sub_1 (dst_ptr, src_ptr, size, (mp_limb_t) 1);
-      size -= dst_ptr[size - 1] == 0;
-
-      /* Store a positive size, to indicate zero-extension.  */
-      dst->_mp_size = size;
-    }
-}