source/libs/gmp/gmp-src/mpn/generic/sec_aors_1.c

   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.h"
  34 #include "gmp-impl.h"
  35
  36 #if OPERATION_sec_add_1
  37 #define FNAME mpn_sec_add_1
  38 #define FNAME_itch mpn_sec_add_1_itch
  39 #define OP_N mpn_add_n
  40 #endif
  41 #if OPERATION_sec_sub_1
  42 #define FNAME mpn_sec_sub_1
  43 #define FNAME_itch mpn_sec_sub_1_itch
  44 #define OP_N mpn_sub_n
  45 #endif
  46
  47 /* It's annoying to that we need scratch space */
  48 mp_size_t
  49 FNAME_itch (mp_size_t n)
  50 {
  51   return n;
  52 }
  53
  54 mp_limb_t
  55 FNAME (mp_ptr rp, mp_srcptr ap, mp_size_t n, mp_limb_t b, mp_ptr scratch)
  56 {
  57   scratch[0] = b;
  58   MPN_ZERO (scratch + 1, n-1);
  59   return OP_N (rp, ap, scratch, n);
  60 }