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Annotation of OpenXM_contrib/gmp/mpz/tdiv_ui.c, Revision 1.1.1.1

1.1       maekawa     1: /* mpz_tdiv_ui(dividend, divisor_limb)
                      2:    -- Return DIVDEND mod DIVISOR_LIMB.
                      3:
                      4: Copyright (C) 1991, 1993, 1994, 1996, 1997, 1998 Free Software Foundation,
                      5: Inc.
                      6:
                      7: This file is part of the GNU MP Library.
                      8:
                      9: The GNU MP Library is free software; you can redistribute it and/or modify
                     10: it under the terms of the GNU Lesser General Public License as published by
                     11: the Free Software Foundation; either version 2.1 of the License, or (at your
                     12: option) any later version.
                     13:
                     14: The GNU MP Library is distributed in the hope that it will be useful, but
                     15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     16: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     17: License for more details.
                     18:
                     19: You should have received a copy of the GNU Lesser General Public License
                     20: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     22: MA 02111-1307, USA. */
                     23:
                     24: #include "gmp.h"
                     25: #include "gmp-impl.h"
                     26:
                     27: unsigned long int
                     28: #if __STDC__
                     29: mpz_tdiv_ui (mpz_srcptr dividend, unsigned long int divisor)
                     30: #else
                     31: mpz_tdiv_ui (dividend, divisor)
                     32:      mpz_srcptr dividend;
                     33:      unsigned long int divisor;
                     34: #endif
                     35: {
                     36:   mp_size_t dividend_size;
                     37:   mp_size_t size;
                     38:   mp_limb_t remainder_limb;
                     39:
                     40:   if (divisor == 0)
                     41:     DIVIDE_BY_ZERO;
                     42:
                     43:   dividend_size = dividend->_mp_size;
                     44:   size = ABS (dividend_size);
                     45:
                     46:   /* No need for temporary allocation and copying if QUOT == DIVIDEND as
                     47:      the divisor is just one limb, and thus no intermediate remainders
                     48:      need to be stored.  */
                     49:
                     50:   remainder_limb = mpn_mod_1 (dividend->_mp_d, size, (mp_limb_t) divisor);
                     51:
                     52:   return remainder_limb;
                     53: }