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Annotation of OpenXM_contrib/gmp/mpz/tdiv_ui.c, Revision 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: }