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-rw-r--r--contrib/libgmp/mpz/tdiv_r_ui.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/contrib/libgmp/mpz/tdiv_r_ui.c b/contrib/libgmp/mpz/tdiv_r_ui.c
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+/* mpz_tdiv_r_ui(rem, dividend, divisor_limb)
+ -- Set REM to DIVDEND mod DIVISOR_LIMB.
+
+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 Library General Public License as published by
+the Free Software Foundation; either version 2 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 Library General Public
+License for more details.
+
+You should have received a copy of the GNU Library 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_tdiv_r_ui (mpz_ptr rem, mpz_srcptr dividend, unsigned long int divisor)
+#else
+mpz_tdiv_r_ui (rem, dividend, divisor)
+ mpz_ptr rem;
+ mpz_srcptr dividend;
+ unsigned long int divisor;
+#endif
+{
+ mp_size_t dividend_size;
+ mp_size_t size;
+ mp_limb_t remainder_limb;
+
+ dividend_size = dividend->_mp_size;
+ size = ABS (dividend_size);
+
+ if (size == 0)
+ {
+ rem->_mp_size = 0;
+ return;
+ }
+
+ /* No need for temporary allocation and copying if QUOT == DIVIDEND as
+ the divisor is just one limb, and thus no intermediate remainders
+ need to be stored. */
+
+ remainder_limb = mpn_mod_1 (dividend->_mp_d, size, (mp_limb_t) divisor);
+
+ if (remainder_limb == 0)
+ rem->_mp_size = 0;
+ else
+ {
+ /* Store the single-limb remainder. We don't check if there's space
+ for just one limb, since no function ever makes zero space. */
+ rem->_mp_size = dividend_size >= 0 ? 1 : -1;
+ rem->_mp_d[0] = remainder_limb;
+ }
+}
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