DBL to Case Structure Selector

[SercoSteveB]

What are the contents of Numeric Array Out following execution of the VI?

NOTE: The content of the other cases within the Case Structure are shown below:

[Tsjabrantes]

The first index of the array (0,49) will call default case which contains (-99), resulting  0 in output;

The second index array (0,5) will call case 1 wired direct to output, resulting 0 in output...

The third index array (0,51) will call case 2 wired direct to output which system rounds up to 1;

So the correct answer is B.

[nik35324]

B

[crossrulz]

B

[crossrulz]

Tsjabrantes, your logic is completely out of whack.  How would calling the default case, which has -99 wired to the output tunnel, result in a 0?

The case structure does not work on floating point numbers.  It coerces to an integer.  Therefore, things get rounded.  0.49 rounds to 0, so case "0" is called.  0.51 rounds to 1, so case "1" is called.  0.5 rounds to the nearest even number (look up Banker's Rounding, which is the IEEE standard) which means it calls case "0".

[Tsjabrantes]

Sorry crossrulz, I don't have much experience like you, then I haven't expressed me very well.

I'm grateful for your explanation about this subject, next time I promise to study more before saying bullshits.

Have a nice day!   

[jwscs]

it should be B)

floats <= x.5 will be rounded towards negative infinity

floats  >  x.5 will be rounded towards (positive) infinity

which means 0.49 -> 0; 0.5 -> 0; 0.51 -> 1

[crossrulz]

jwscs,

Please reread my last comment.  When it comes to default rounding (ie when you coerce a float into in integer), Bankers Rounding is used, which means you round to the nearest EVEN number when at X.5.  This has been discussed many times on this board along.

[sdonaldson]

B

[MrStevenUND]

 B

[CataM]

b)

[LV_COder]

B

[qubirt]

B

[Matt-A.]

B

[SercoSteveB]

Answer: B.  Nice one all.

[decarr]

Banker's Rounding is a new term for me - I learn something every time I check this blog!!