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_CONSTANTS_H_
      30  #define LIBMPDEC_CONSTANTS_H_
      31  
      32  
      33  #include "mpdecimal.h"
      34  
      35  #include <stdint.h>
      36  
      37  
      38  /* Internal header file: all symbols have local scope in the DSO */
      39  MPD_PRAGMA(MPD_HIDE_SYMBOLS_START)
      40  
      41  
      42  /* choice of optimized functions */
      43  #if defined(CONFIG_64)
      44  /* x64 */
      45    #define MULMOD(a, b) x64_mulmod(a, b, umod)
      46    #define MULMOD2C(a0, a1, w) x64_mulmod2c(a0, a1, w, umod)
      47    #define MULMOD2(a0, b0, a1, b1) x64_mulmod2(a0, b0, a1, b1, umod)
      48    #define POWMOD(base, exp) x64_powmod(base, exp, umod)
      49    #define SETMODULUS(modnum) std_setmodulus(modnum, &umod)
      50    #define SIZE3_NTT(x0, x1, x2, w3table) std_size3_ntt(x0, x1, x2, w3table, umod)
      51  #elif defined(PPRO)
      52  /* PentiumPro (or later) gcc inline asm */
      53    #define MULMOD(a, b) ppro_mulmod(a, b, &dmod, dinvmod)
      54    #define MULMOD2C(a0, a1, w) ppro_mulmod2c(a0, a1, w, &dmod, dinvmod)
      55    #define MULMOD2(a0, b0, a1, b1) ppro_mulmod2(a0, b0, a1, b1, &dmod, dinvmod)
      56    #define POWMOD(base, exp) ppro_powmod(base, exp, &dmod, dinvmod)
      57    #define SETMODULUS(modnum) ppro_setmodulus(modnum, &umod, &dmod, dinvmod)
      58    #define SIZE3_NTT(x0, x1, x2, w3table) ppro_size3_ntt(x0, x1, x2, w3table, umod, &dmod, dinvmod)
      59  #else
      60    /* ANSI C99 */
      61    #define MULMOD(a, b) std_mulmod(a, b, umod)
      62    #define MULMOD2C(a0, a1, w) std_mulmod2c(a0, a1, w, umod)
      63    #define MULMOD2(a0, b0, a1, b1) std_mulmod2(a0, b0, a1, b1, umod)
      64    #define POWMOD(base, exp) std_powmod(base, exp, umod)
      65    #define SETMODULUS(modnum) std_setmodulus(modnum, &umod)
      66    #define SIZE3_NTT(x0, x1, x2, w3table) std_size3_ntt(x0, x1, x2, w3table, umod)
      67  #endif
      68  
      69  /* PentiumPro (or later) gcc inline asm */
      70  extern const float MPD_TWO63;
      71  extern const uint32_t mpd_invmoduli[3][3];
      72  
      73  enum {P1, P2, P3};
      74  
      75  extern const mpd_uint_t mpd_moduli[];
      76  extern const mpd_uint_t mpd_roots[];
      77  extern const mpd_size_t mpd_bits[];
      78  extern const mpd_uint_t mpd_pow10[];
      79  
      80  extern const mpd_uint_t INV_P1_MOD_P2;
      81  extern const mpd_uint_t INV_P1P2_MOD_P3;
      82  extern const mpd_uint_t LH_P1P2;
      83  extern const mpd_uint_t UH_P1P2;
      84  
      85  
      86  MPD_PRAGMA(MPD_HIDE_SYMBOLS_END) /* restore previous scope rules */
      87  
      88  
      89  #endif /* LIBMPDEC_CONSTANTS_H_ */