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diff --git a/ghc/runtime/gmp/mpz_mdm.c b/ghc/runtime/gmp/mpz_mdm.c
deleted file mode 100644
index 0844643..0000000
--- a/ghc/runtime/gmp/mpz_mdm.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/* mpz_mdivmod -- Mathematical DIVision and MODulo, i.e. division that rounds
-   the quotient towards -infinity, and with the remainder non-negative.
-
-Copyright (C) 1991, 1992 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 General Public License as published by
-the Free Software Foundation; either version 2, 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with the GNU MP Library; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-
-void
-#ifdef __STDC__
-mpz_mdivmod (MP_INT *quot, MP_INT *rem,
-	     const MP_INT *dividend, const MP_INT *divisor)
-#else
-mpz_mdivmod (quot, rem, dividend, divisor)
-     MP_INT *quot;
-     MP_INT *rem;
-     const MP_INT *dividend;
-     const MP_INT *divisor;
-#endif
-{
-  if ((dividend->size ^ divisor->size) >= 0)
-    {
-      /* When the dividend and the divisor has same sign, this function
-	 gives same result as mpz_divmod.  */
-      mpz_divmod (quot, rem, dividend, divisor);
-    }
-  else
-    {
-      MP_INT temp_divisor;	/* N.B.: lives until function returns! */
-
-      /* We need the original value of the divisor after the quotient and
-	 remainder have been preliminary calculated.  We have to copy it to
-	 temporary space if it's the same variable as either QUOT or REM.  */
-      if (quot == divisor || rem == divisor)
-	{
-	  MPZ_TMP_INIT (&temp_divisor, ABS (divisor->size));
-	  mpz_set (&temp_divisor, divisor);
-	  divisor = &temp_divisor;
-	}
-
-      mpz_divmod (quot, rem, dividend, divisor);
-      if (rem->size != 0)
-	{
-	  mpz_sub_ui (quot, quot, 1);
-	  mpz_add (rem, rem, divisor);
-	}
-    }
-}