C++ (Cpp) osfreq Examples

Example #1

File: apple.c Project: JacobBarthelmeh/supercop

static void init(void)
{
  unsigned int tbfrequency = 0; size_t tbfrequencylen = sizeof(unsigned int);
  cpufrequency = osfreq();
  sysctl(tbmib,2,&tbfrequency,&tbfrequencylen,0,0);
  if (tbfrequency > 0)
    tbcycles = myround(64 * (double) (unsigned long long) cpufrequency
                          / (double) (unsigned long long) tbfrequency);
}

Example #2

File: powerpccpuinfo.c Project: 0x20c24/cjdns

static void init(void)
{
  int loop;
  double guess1;
  double guess2;

  cpufrequency = osfreq();
  if (!cpufrequency) return;

  for (tbshift = 0;tbshift < 10;++tbshift) {
    for (loop = 0;loop < 100;++loop) {
      guess1 = guesstbcycles();
      guess2 = guesstbcycles();
      tbcycles = myround(guess1);
      if (guess1 - tbcycles > 0.1) continue;
      if (tbcycles - guess1 > 0.1) continue;
      if (guess2 - tbcycles > 0.1) continue;
      if (tbcycles - guess2 > 0.1) continue;
      return;
    }
  }
  tbcycles = 0;
}

Example #3

File: monotoniccpuinfo.c Project: 0x64616E69656C/supercop

static void init(void)
{
  cpufrequency = osfreq();
}