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diff --git a/rts/gmp/mpz/cdiv_q.c b/rts/gmp/mpz/cdiv_q.c
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+/* mpz_cdiv_q -- Division rounding the quotient towards +infinity. The
+ remainder gets the opposite sign as the denominator.
+
+Copyright (C) 1994, 1995, 1996, 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_cdiv_q (mpz_ptr quot, mpz_srcptr dividend, mpz_srcptr divisor)
+#else
+mpz_cdiv_q (quot, dividend, divisor)
+ mpz_ptr quot;
+ mpz_srcptr dividend;
+ mpz_srcptr divisor;
+#endif
+{
+ mp_size_t dividend_size = dividend->_mp_size;
+ mp_size_t divisor_size = divisor->_mp_size;
+ mpz_t rem;
+ TMP_DECL (marker);
+
+ TMP_MARK (marker);
+
+ MPZ_TMP_INIT (rem, ABS (divisor_size));
+
+ mpz_tdiv_qr (quot, rem, dividend, divisor);
+
+ if ((divisor_size ^ dividend_size) >= 0 && rem->_mp_size != 0)
+ mpz_add_ui (quot, quot, 1L);
+
+ TMP_FREE (marker);
+}