Function SeedTimestamp

src/random.cpp:454–458

 */

static void SeedTimestamp(CSHA512& hasher) noexcept
{
    int64_t perfcounter = GetPerformanceCounter();
    hasher.Write((const unsigned char*)&perfcounter, sizeof(perfcounter));
}

static void SeedFast(CSHA512& hasher) noexcept
{