C++ (Cpp) MPN_SAME_OR_INCR_P Examples

Example #1

File: add_n.cpp Project: 12w21/jhPrimeminer

mp_limb_t
mpn_add_n (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
{
  mp_limb_t ul, vl, sl, rl, cy, cy1, cy2;

  ASSERT (n >= 1);
  ASSERT (MPN_SAME_OR_INCR_P (rp, up, n));
  ASSERT (MPN_SAME_OR_INCR_P (rp, vp, n));

  cy = 0;
  do
    {
      ul = *up++;
      vl = *vp++;
      sl = ul + vl;
      cy1 = sl < ul;
      rl = sl + cy;
      cy2 = rl < sl;
      cy = cy1 | cy2;
      *rp++ = rl;
    }
  while (--n != 0);

  return cy;
}

Example #2

File: rshift.c Project: angavrilov/ecl-sse

mp_limb_t
mpn_rshift (mp_ptr rp, mp_srcptr up, mp_size_t n, unsigned int cnt)
{
  mp_limb_t high_limb, low_limb;
  unsigned int tnc;
  mp_size_t i;
  mp_limb_t retval;

  ASSERT (n >= 1);
  ASSERT (cnt >= 1);
  ASSERT (cnt < GMP_NUMB_BITS);
  ASSERT (MPN_SAME_OR_INCR_P (rp, up, n));

  tnc = GMP_NUMB_BITS - cnt;
  high_limb = *up++;
  retval = (high_limb << tnc) & GMP_NUMB_MASK;
  low_limb = high_limb >> cnt;

  for (i = n - 1; i != 0; i--)
    {
      high_limb = *up++;
      *rp++ = low_limb | ((high_limb << tnc) & GMP_NUMB_MASK);
      low_limb = high_limb >> cnt;
    }
  *rp = low_limb;

  return retval;
}

Example #3

File: add_n.cpp Project: 12w21/jhPrimeminer

mp_limb_t
mpn_add_n (mp_ptr rp, mp_srcptr up, mp_srcptr vp, mp_size_t n)
{
  mp_limb_t ul, vl, rl, cy;

  ASSERT (n >= 1);
  ASSERT (MPN_SAME_OR_INCR_P (rp, up, n));
  ASSERT (MPN_SAME_OR_INCR_P (rp, vp, n));

  cy = 0;
  do
    {
      ul = *up++;
      vl = *vp++;
      rl = ul + vl + cy;
      cy = rl >> GMP_NUMB_BITS;
      *rp++ = rl & GMP_NUMB_MASK;
    }
  while (--n != 0);

  return cy;
}