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Annotation of OpenXM_contrib/gmp/mpn/generic/divrem_1.c, Revision 1.1

1.1     ! maekawa     1: /* mpn_divrem_1(quot_ptr, qsize, dividend_ptr, dividend_size, divisor_limb) --
        !             2:    Divide (DIVIDEND_PTR,,DIVIDEND_SIZE) by DIVISOR_LIMB.
        !             3:    Write DIVIDEND_SIZE limbs of quotient at QUOT_PTR.
        !             4:    Return the single-limb remainder.
        !             5:    There are no constraints on the value of the divisor.
        !             6:
        !             7:    QUOT_PTR and DIVIDEND_PTR might point to the same limb.
        !             8:
        !             9: Copyright (C) 1996 Free Software Foundation, Inc.
        !            10:
        !            11: This file is part of the GNU MP Library.
        !            12:
        !            13: The GNU MP Library is free software; you can redistribute it and/or modify
        !            14: it under the terms of the GNU Library General Public License as published by
        !            15: the Free Software Foundation; either version 2 of the License, or (at your
        !            16: option) any later version.
        !            17:
        !            18: The GNU MP Library is distributed in the hope that it will be useful, but
        !            19: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            20: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
        !            21: License for more details.
        !            22:
        !            23: You should have received a copy of the GNU Library General Public License
        !            24: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            25: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            26: MA 02111-1307, USA. */
        !            27:
        !            28: #include "gmp.h"
        !            29: #include "gmp-impl.h"
        !            30: #include "longlong.h"
        !            31:
        !            32: mp_limb_t
        !            33: #if __STDC__
        !            34: mpn_divrem_1 (mp_ptr qp, mp_size_t qsize,
        !            35:              mp_srcptr dividend_ptr, mp_size_t dividend_size,
        !            36:              mp_limb_t divisor_limb)
        !            37: #else
        !            38: mpn_divrem_1 (qp, qsize, dividend_ptr, dividend_size, divisor_limb)
        !            39:      mp_ptr qp;
        !            40:      mp_size_t qsize;
        !            41:      mp_srcptr dividend_ptr;
        !            42:      mp_size_t dividend_size;
        !            43:      mp_limb_t divisor_limb;
        !            44: #endif
        !            45: {
        !            46:   mp_limb_t rlimb;
        !            47:   long i;
        !            48:
        !            49:   /* Develop integer part of quotient.  */
        !            50:   rlimb = mpn_divmod_1 (qp + qsize, dividend_ptr, dividend_size, divisor_limb);
        !            51:
        !            52:   if (qsize != 0)
        !            53:     {
        !            54:       for (i = qsize - 1; i >= 0; i--)
        !            55:        udiv_qrnnd (qp[i], rlimb, rlimb, 0, divisor_limb);
        !            56:     }
        !            57:   return rlimb;
        !            58: }