1  /* A table of data supporting binvert_limb().
       2  
       3     THE CONTENTS OF THIS FILE ARE FOR INTERNAL USE AND MAY CHANGE
       4     INCOMPATIBLY OR DISAPPEAR IN A FUTURE GNU MP RELEASE.  */
       5  
       6  /*
       7  Copyright 2000 Free Software Foundation, Inc.
       8  
       9  This file is part of the GNU MP Library.
      10  
      11  The GNU MP Library is free software; you can redistribute it and/or modify
      12  it under the terms of either:
      13  
      14    * the GNU Lesser General Public License as published by the Free
      15      Software Foundation; either version 3 of the License, or (at your
      16      option) any later version.
      17  
      18  or
      19  
      20    * the GNU General Public License as published by the Free Software
      21      Foundation; either version 2 of the License, or (at your option) any
      22      later version.
      23  
      24  or both in parallel, as here.
      25  
      26  The GNU MP Library is distributed in the hope that it will be useful, but
      27  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      28  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      29  for more details.
      30  
      31  You should have received copies of the GNU General Public License and the
      32  GNU Lesser General Public License along with the GNU MP Library.  If not,
      33  see https://www.gnu.org/licenses/.  */
      34  
      35  #include "gmp-impl.h"
      36  
      37  
      38  /* binvert_limb_table[i] is the multiplicative inverse of 2*i+1 mod 256,
      39     ie. (binvert_limb_table[i] * (2*i+1)) % 256 == 1 */
      40  
      41  const unsigned char  binvert_limb_table[128] = {
      42    0x01, 0xAB, 0xCD, 0xB7, 0x39, 0xA3, 0xC5, 0xEF,
      43    0xF1, 0x1B, 0x3D, 0xA7, 0x29, 0x13, 0x35, 0xDF,
      44    0xE1, 0x8B, 0xAD, 0x97, 0x19, 0x83, 0xA5, 0xCF,
      45    0xD1, 0xFB, 0x1D, 0x87, 0x09, 0xF3, 0x15, 0xBF,
      46    0xC1, 0x6B, 0x8D, 0x77, 0xF9, 0x63, 0x85, 0xAF,
      47    0xB1, 0xDB, 0xFD, 0x67, 0xE9, 0xD3, 0xF5, 0x9F,
      48    0xA1, 0x4B, 0x6D, 0x57, 0xD9, 0x43, 0x65, 0x8F,
      49    0x91, 0xBB, 0xDD, 0x47, 0xC9, 0xB3, 0xD5, 0x7F,
      50    0x81, 0x2B, 0x4D, 0x37, 0xB9, 0x23, 0x45, 0x6F,
      51    0x71, 0x9B, 0xBD, 0x27, 0xA9, 0x93, 0xB5, 0x5F,
      52    0x61, 0x0B, 0x2D, 0x17, 0x99, 0x03, 0x25, 0x4F,
      53    0x51, 0x7B, 0x9D, 0x07, 0x89, 0x73, 0x95, 0x3F,
      54    0x41, 0xEB, 0x0D, 0xF7, 0x79, 0xE3, 0x05, 0x2F,
      55    0x31, 0x5B, 0x7D, 0xE7, 0x69, 0x53, 0x75, 0x1F,
      56    0x21, 0xCB, 0xED, 0xD7, 0x59, 0xC3, 0xE5, 0x0F,
      57    0x11, 0x3B, 0x5D, 0xC7, 0x49, 0x33, 0x55, 0xFF
      58  };