C++ (Cpp) si_or Examples

Example #1

File: spe_prime.c Project: MartijnPieterse/cellprimecoin

int ProbableCunninghamChainTest(vec_uint4 n[3], int fSophieGermain, int fFermatTest, int *chainLength)
{
    vec_uint4   one[3] = { {0,0,0,0}, {0,0,0,0}, { 0,0,0,1 } };

    *chainLength = 0;

    if (fSophieGermain)
    {
        _mpm_sub(n, n, one, 3);
    }
    else
    {
       _mpm_add(n, n, one, 3);
    }

    if (!FermatPrimeProbabilityTest(n))
    {
        return 0;
    }

    while (1)
    {
        (*chainLength)++;

        // n = n * 2
        MPM_SHL_BITS_SMALL(n, n, 3, 1);
        if (fSophieGermain)
        {
            // n = n * 2 + 1
            n[2] = si_or(n[2], one[2]);
        }
        else
        {
            // n = n * 2 - 1
            _mpm_sub(n, n, one, 3);
        }

        if (!EulerLagrangeLifchitzPrimalityTest(n, fSophieGermain))
        {
            return 1;
        }

#if 0
        if (
        if fFermatTest: c, f = FermatPrimeProbabilityTest(n)
        else: c, f = EulerLagrangeLifchitzPrimalityTest(n, fSophieGermain)
        if not c:
            return True, chainLength, f
#endif
    }
}

Example #2

File: divmodti4.c Project: AlexMioMio/gcc

UTItype
__udivmodti4 (UTItype num, UTItype den, UTItype * rp)
{
  qword shift =
    si_from_uint (count_leading_zeros (den) - count_leading_zeros (num));
  qword n0 = si_from_UTItype (num);
  qword d0 = si_from_UTItype (den);
  qword bit = si_andi (si_fsmbi (1), 1);
  qword r0 = si_il (0);
  qword m1 = si_fsmbi (0x000f);
  qword mask, r1, n1;

  d0 = si_shlqbybi (si_shlqbi (d0, shift), shift);
  bit = si_shlqbybi (si_shlqbi (bit, shift), shift);

  do
    {
      r1 = si_or (r0, bit);

      // n1 = n0 - d0 in TImode
      n1 = si_bg (d0, n0);
      n1 = si_shlqbyi (n1, 4);
      n1 = si_sf (m1, n1);
      n1 = si_bgx (d0, n0, n1);
      n1 = si_shlqbyi (n1, 4);
      n1 = si_sf (m1, n1);
      n1 = si_bgx (d0, n0, n1);
      n1 = si_shlqbyi (n1, 4);
      n1 = si_sf (m1, n1);
      n1 = si_sfx (d0, n0, n1);

      mask = si_fsm (si_cgti (n1, -1));
      r0 = si_selb (r0, r1, mask);
      n0 = si_selb (n0, n1, mask);
      bit = si_rotqmbii (bit, -1);
      d0 = si_rotqmbii (d0, -1);
    }
  while (si_to_uint (si_orx (bit)));
  if (rp)
    *rp = si_to_UTItype (n0);
  return si_to_UTItype (r0);
}