Examples of errors detected by the V1064 diagnostic

V1064. The left operand of integer division is less than the right one. The result will always be zero.

Ogre3D

V1064 The '1' operand of integer division is less than the '100000' one. The result will always be zero. OgreAutoParamDataSource.cpp 1094

typedef Vector<4, Real> Vector4;
const Vector4&
  AutoParamDataSource::getShadowSceneDepthRange(size_t index) const
{
  static Vector4 dummy(0, 100000, 100000, 1/100000);
  // ....
}

Here the dummy vector should store floating point numbers. However, there are integer values to the left and right of the division operator.

RPCS3

V1064 The 'nsec' operand of the modulo operation is less than the '1000000000ull' operand. The result is always equal to the left operand. Thread.cpp 2359

void thread_ctrl::wait_for(u64 usec, [[maybe_unused]] bool alert /* true */)
{
  // ....
  if (!alert && usec > 0 && usec <= 1000 && fd_timer != -1)
  {
    struct itimerspec timeout;
    u64 missed;
    u64 nsec = usec * 1000ull;
    timeout.it_value.tv_nsec = (nsec % 1000000000ull);
    timeout.it_value.tv_sec = nsec / 1000000000ull;
    timeout.it_interval.tv_sec = 0;
    timeout.it_interval.tv_nsec = 0;
    timerfd_settime(fd_timer, 0, &timeout, NULL);
    // ....
  }
}

In then-branch usec <= 1000. So nsec <= 1000'000, and nsec % 1'000'000'000 expression is meaningless.