C++ (Cpp) MODMULT Examples

Example #1

File: pdfutility.cpp Project: BlitzMaxModules/wx.mod

wxString
wxPdfUtility::GetUniqueId(const wxString& prefix)
{
  wxString uid = (prefix.Length() <= 114) ? prefix : prefix.Left(114);

  wxDateTime ts;
  ts.SetToCurrent();

  int q;
  int z;
  if (!ms_seeded)
  {
    ms_seeded = true;
    ms_s1 = ts.GetSecond() ^ (~ts.GetMillisecond());
    if (ms_s1 == 0) ms_s1 = 1;
    ms_s2 = wxGetProcessId();
  }
  MODMULT(53668, 40014, 12211, 2147483563L, ms_s1);
  MODMULT(52774, 40692,  3791, 2147483399L, ms_s2);

  z = ms_s1 - ms_s2;
  if (z < 1)
  {
    z += 2147483562;
  }

  uid += wxString::Format(wxT("%08x%05x"), ts.GetSecond(), ts.GetMillisecond());
  uid += Double2String(z * 4.656613e-9,8);

  return uid;
}

Example #2

File: meier.c Project: rplantiko/painters

//--------------------------------------------------------------------  
// LCG Zufallszahlengenerator 
// aus Bruce Schneier, Cryptographic Algorithms
//--------------------------------------------------------------------  
// LCG Zufallszahlengenerator
double randLCG(void)
{
    long q, z;

    MODMULT(53668, 40014, 12211, 2147483563L, s1)
    MODMULT(52774, 40692, 3791, 2147483399L, s2)
    z = s1 - s2;
    if (z < 1)
        z += 2147483562;
    return z * 4.656613e-10;
}

Example #3

PHPAPI double php_combined_lcg(TSRMLS_D) /* {{{ */
{
	php_int32 q;
	php_int32 z;

	if (!LCG(seeded)) {
		lcg_seed(TSRMLS_C);
	}

	MODMULT(53668, 40014, 12211, 2147483563L, LCG(s1));
	MODMULT(52774, 40692, 3791, 2147483399L, LCG(s2));

	z = LCG(s1) - LCG(s2);
	if (z < 1) {
		z += 2147483562;
	}

	return z * 4.656613e-10;
}