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Annotation of OpenXM_contrib/gmp/mpn/cray/submul_1.c, Revision 1.1

1.1     ! maekawa     1: /* mpn_submul_1 for Cray PVP.
        !             2:
        !             3: Copyright (C) 1996, 2000 Free Software Foundation, Inc.
        !             4:
        !             5: This file is part of the GNU MP Library.
        !             6:
        !             7: The GNU MP Library is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU Lesser General Public License as published by
        !             9: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            10: option) any later version.
        !            11:
        !            12: The GNU MP Library is distributed in the hope that it will be useful, but
        !            13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Lesser General Public License
        !            18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            20: MA 02111-1307, USA.  */
        !            21:
        !            22:
        !            23: #include "gmp.h"
        !            24: #include "gmp-impl.h"
        !            25:
        !            26: mp_limb_t
        !            27: mpn_submul_1 (mp_ptr rp, mp_srcptr up, mp_size_t n, mp_limb_t limb)
        !            28: {
        !            29:   mp_ptr p0, p1, tp;
        !            30:   mp_limb_t cy_limb;
        !            31:   TMP_DECL (marker);
        !            32:   TMP_MARK (marker);
        !            33:
        !            34:   p1 = TMP_ALLOC (n * BYTES_PER_MP_LIMB);
        !            35:   p0 = TMP_ALLOC (n * BYTES_PER_MP_LIMB);
        !            36:   tp = TMP_ALLOC (n * BYTES_PER_MP_LIMB);
        !            37:
        !            38:   GMPN_MULWW (p1, p0, up, &n, &limb);
        !            39:   cy_limb = mpn_sub_n (tp, rp, p0, n);
        !            40:   rp[0] = tp[0];
        !            41:   cy_limb += mpn_sub_n (rp + 1, tp + 1, p1, n - 1);
        !            42:   cy_limb += p1[n - 1];
        !            43:
        !            44:   TMP_FREE (marker);
        !            45:   return cy_limb;
        !            46: }