1  /* mpn_sec_add_1, mpn_sec_sub_1
       2  
       3     Contributed to the GNU project by Niels Möller
       4  
       5  Copyright 2013, 2014 Free Software Foundation, 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 either:
      11  
      12    * the GNU Lesser General Public License as published by the Free
      13      Software Foundation; either version 3 of the License, or (at your
      14      option) any later version.
      15  
      16  or
      17  
      18    * the GNU General Public License as published by the Free Software
      19      Foundation; either version 2 of the License, or (at your option) any
      20      later version.
      21  
      22  or both in parallel, as here.
      23  
      24  The GNU MP Library is distributed in the hope that it will be useful, but
      25  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      26  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      27  for more details.
      28  
      29  You should have received copies of the GNU General Public License and the
      30  GNU Lesser General Public License along with the GNU MP Library.  If not,
      31  see https://www.gnu.org/licenses/.  */
      32  
      33  #include "gmp-impl.h"
      34  
      35  #if OPERATION_sec_add_1
      36  #define FNAME mpn_sec_add_1
      37  #define FNAME_itch mpn_sec_add_1_itch
      38  #define OP_N mpn_add_n
      39  #endif
      40  #if OPERATION_sec_sub_1
      41  #define FNAME mpn_sec_sub_1
      42  #define FNAME_itch mpn_sec_sub_1_itch
      43  #define OP_N mpn_sub_n
      44  #endif
      45  
      46  /* It's annoying to that we need scratch space */
      47  mp_size_t
      48  FNAME_itch (mp_size_t n)
      49  {
      50    return n;
      51  }
      52  
      53  mp_limb_t
      54  FNAME (mp_ptr rp, mp_srcptr ap, mp_size_t n, mp_limb_t b, mp_ptr scratch)
      55  {
      56    scratch[0] = b;
      57    MPN_ZERO (scratch + 1, n-1);
      58    return OP_N (rp, ap, scratch, n);
      59  }