1 /*
2 * Copyright (c) 2008-2024 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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27
28 #ifndef LIBMPDEC_NUMBERTHEORY_H_
29 #define LIBMPDEC_NUMBERTHEORY_H_
30
31
32 #include "constants.h"
33 #include "mpdecimal.h"
34
35
36 /* Internal header file: all symbols have local scope in the DSO */
37 MPD_PRAGMA(MPD_HIDE_SYMBOLS_START)
38
39
40 /* transform parameters */
41 struct fnt_params {
42 int modnum;
43 mpd_uint_t modulus;
44 mpd_uint_t kernel;
45 mpd_uint_t wtable[];
46 };
47
48
49 mpd_uint_t _mpd_getkernel(mpd_uint_t n, int sign, int modnum);
50 struct fnt_params *_mpd_init_fnt_params(mpd_size_t n, int sign, int modnum);
51 void _mpd_init_w3table(mpd_uint_t w3table[3], int sign, int modnum);
52
53
54 #ifdef PPRO
55 static inline void
ppro_setmodulus(int modnum,mpd_uint_t * umod,double * dmod,uint32_t dinvmod[3])56 ppro_setmodulus(int modnum, mpd_uint_t *umod, double *dmod, uint32_t dinvmod[3])
57 {
58 *dmod = *umod = mpd_moduli[modnum];
59 dinvmod[0] = mpd_invmoduli[modnum][0];
60 dinvmod[1] = mpd_invmoduli[modnum][1];
61 dinvmod[2] = mpd_invmoduli[modnum][2];
62 }
63 #else
64 static inline void
std_setmodulus(int modnum,mpd_uint_t * umod)65 std_setmodulus(int modnum, mpd_uint_t *umod)
66 {
67 *umod = mpd_moduli[modnum];
68 }
69 #endif
70
71
72 MPD_PRAGMA(MPD_HIDE_SYMBOLS_END) /* restore previous scope rules */
73
74
75 #endif /* LIBMPDEC_NUMBERTHEORY_H_ */
76