1/* mpn_sec_sqr.
2
3   Contributed to the GNU project by Torbj��rn Granlund.
4
5Copyright 2013, 2014 Free Software Foundation, Inc.
6
7This file is part of the GNU MP Library.
8
9The GNU MP Library is free software; you can redistribute it and/or modify
10it 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
16or
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
22or both in parallel, as here.
23
24The GNU MP Library is distributed in the hope that it will be useful, but
25WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
26or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
27for more details.
28
29You should have received copies of the GNU General Public License and the
30GNU Lesser General Public License along with the GNU MP Library.  If not,
31see https://www.gnu.org/licenses/.  */
32
33#include "gmp-impl.h"
34
35#if ! HAVE_NATIVE_mpn_sqr_basecase
36/* The limit of the generic code is SQR_TOOM2_THRESHOLD.  */
37#define SQR_BASECASE_LIM  SQR_TOOM2_THRESHOLD
38#endif
39
40#if HAVE_NATIVE_mpn_sqr_basecase
41#ifdef TUNE_SQR_TOOM2_MAX
42/* We slightly abuse TUNE_SQR_TOOM2_MAX here.  If it is set for an assembly
43   mpn_sqr_basecase, it comes from SQR_TOOM2_THRESHOLD_MAX in the assembly
44   file.  An assembly mpn_sqr_basecase that does not define it should allow
45   any size.  */
46#define SQR_BASECASE_LIM  SQR_TOOM2_THRESHOLD
47#endif
48#endif
49
50#ifdef WANT_FAT_BINARY
51/* For fat builds, we use SQR_TOOM2_THRESHOLD which will expand to a read from
52   __gmpn_cpuvec.  Perhaps any possible sqr_basecase.asm allow any size, and we
53   limit the use unnecessarily.  We cannot tell, so play it safe.  FIXME.  */
54#define SQR_BASECASE_LIM  SQR_TOOM2_THRESHOLD
55#endif
56
57void
58mpn_sec_sqr (mp_ptr rp,
59	     mp_srcptr ap, mp_size_t an,
60	     mp_ptr tp)
61{
62#ifndef SQR_BASECASE_LIM
63/* If SQR_BASECASE_LIM is now not defined, use mpn_sqr_basecase for any operand
64   size.  */
65  mpn_sqr_basecase (rp, ap, an);
66#else
67/* Else use mpn_mul_basecase.  */
68  mpn_mul_basecase (rp, ap, an, ap, an);
69#endif
70}
71
72mp_size_t
73mpn_sec_sqr_itch (mp_size_t an)
74{
75  return 0;
76}
77