1/*
2 * Copyright (c) 2008-2020 Stefan Krah. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28
29#ifndef LIBMPDEC_NUMBERTHEORY_H_
30#define LIBMPDEC_NUMBERTHEORY_H_
31
32
33#include "mpdecimal.h"
34#include "constants.h"
35
36
37/* Internal header file: all symbols have local scope in the DSO */
38MPD_PRAGMA(MPD_HIDE_SYMBOLS_START)
39
40
41/* transform parameters */
42struct fnt_params {
43    int modnum;
44    mpd_uint_t modulus;
45    mpd_uint_t kernel;
46    mpd_uint_t wtable[];
47};
48
49
50mpd_uint_t _mpd_getkernel(mpd_uint_t n, int sign, int modnum);
51struct fnt_params *_mpd_init_fnt_params(mpd_size_t n, int sign, int modnum);
52void _mpd_init_w3table(mpd_uint_t w3table[3], int sign, int modnum);
53
54
55#ifdef PPRO
56static inline void
57ppro_setmodulus(int modnum, mpd_uint_t *umod, double *dmod, uint32_t dinvmod[3])
58{
59    *dmod = *umod =  mpd_moduli[modnum];
60    dinvmod[0] = mpd_invmoduli[modnum][0];
61    dinvmod[1] = mpd_invmoduli[modnum][1];
62    dinvmod[2] = mpd_invmoduli[modnum][2];
63}
64#else
65static inline void
66std_setmodulus(int modnum, mpd_uint_t *umod)
67{
68    *umod =  mpd_moduli[modnum];
69}
70#endif
71
72
73MPD_PRAGMA(MPD_HIDE_SYMBOLS_END) /* restore previous scope rules */
74
75
76#endif /* LIBMPDEC_NUMBERTHEORY_H_ */
77