what do you guys think about this "curr_samp_volt "?

i have seen that this question in this vesc forums.
jennyxcy2008' question:
1：switch (comm_step) {
      case 1: curr_samp_volt = (1 << 0) || (1 << 2); break; 
      case 2: curr_samp_volt = (1 << 1) || (1 << 2); break;
      case 3: curr_samp_volt = (1 << 1) || (1 << 2); break;
      case 4: curr_samp_volt = (1 << 0) || (1 << 1); break;
      case 5: curr_samp_volt = (1 << 0) || (1 << 1); break;
      case 6: curr_samp_volt = (1 << 0) || (1 << 2); break;

The code above, "||" should be "|" right?

what do you guys think about it?

if it is '||' 

case 1: curr_samp_volt = 1; break;
case 2: curr_samp_volt = 1; break;
case 3: curr_samp_volt = 1; break;
case 4: curr_samp_volt = 1; break;
case 5: curr_samp_volt = 1; break;
case 6: curr_samp_volt = 1; break;

is this right?

if this is right, i think just only one might be going to activate below.
/////////////////////////////////////////////////////
if (curr_samp_volt & (1 << 0)) {
       curr0 = GET_CURRENT1(); 
}

if (curr_samp_volt & (1 << 1)) {
      curr1 = GET_CURRENT2();
}

#ifdef HW_HAS_3_SHUNTS
if (curr_samp_volt & (1 << 2)) {
     curr2 = GET_CURRENT3();
}
#endif
/////////////////////////////////////////////////////

if it is '|' 

case 1: curr_samp_volt = 5; break;
case 2: curr_samp_volt = 6; break;
case 3: curr_samp_volt = 6; break;
case 4: curr_samp_volt = 3; break;
case 5: curr_samp_volt = 3; break;
case 6: curr_samp_volt = 5; break;

i think, it doesn't need  the below commands.

/////////////////////////////////////////////////////
if (curr_samp_volt & (1 << 0)) {
       curr0 = GET_CURRENT1();   
}

if (curr_samp_volt & (1 << 1)) {
      curr1 = GET_CURRENT2();
}

#ifdef HW_HAS_3_SHUNTS
if (curr_samp_volt & (1 << 2)) {
     curr2 = GET_CURRENT3();
}
#endif
/////////////////////////////////////////////////////

i am very very wondering. 

if you guys have known this question. could you explain how to use? 

and what does mean that "Use the voltage-synchronized samples for this current sample"?

thank you so much your interesting.