Rnd in the cycle of Mathcad Prime - an error?

[ValeryOchkov]

I see an error by the using rnd function in the cycle of Mathcad Prime - see attach. In Mathcad 15 all is OK!

See the picture and Mathcad 12 and Prime 2.0 files.

[AlanStevens]

Your picture (for Mathcad Prime) has the word Dice twice rather than Dice1 and Dice2 However, even correcting this the result you show still stands.

If you replace 1+floor(rnd(6)) by ceil(rnd(6)) you get essentially the same result as for M15, suggesting the problem is with the floor function rather than with rnd.

Alan

[ValeryOchkov]

Tahks, Alan!

You see the error too!

1+floor(rnd(6))

ceil(rnd(6))

works correct too.

But

1+floor(rnd(6))

1+floor(rnd(6))

not.

I have sent the message with this error to Mona!

[AlanStevens]

Here are two versions that use floor(rnd(6)) twice and do work! The second example suggests things go astray when adding 1 to the random integers!!!!

Alan

[AlanStevens]

Uh-oh! Weirder still!!

Alan

[ValeryOchkov]

It was a preprogram of this program - http://communities.ptc.com/message/184194

See too ne picture: