6 replies to this topic

[Ben C]

Sorry for such a stupid question...
I have a program that generates some values using sine, so obviously they are very long. When I display them I only want them to 0 decimal places (I'm assuming that rnd = 'round').

I want to do something like this....

Locate 1,1,Int A

Except of course, using a command that rounds UP when necessary (Int and Intg seem to always round down).

How?
Thx
-Ben

P.S. Are Int and Intg actually different in any way?

[Martin]

To Rnd: - I tried this many years ago on my old good fx7700GB, may be
I forgot some detail, Rnd makes temporary rounding for displaying permanent, rounding format is taken from Fix/Sci

Example:
Fix 0
3.1415
Ans_ <-this shows 3 (temporary rounded number to display)
Norm
Ans_ <-this shows 3.1415

But he same + Rnd:
Fix 0
3.1415
Ans_ <-this shows 3 (temporary rounded number to display)
Rnd <- make temporary rounding persistent
Norm
Ans_ <-this also shows 3

To int/intg
Intg (X) = the highest integer number which is smaller or equal to X
Int (X)=Sign(X)*Abs(Intg(X))
or :
Int is the highest integer number which is smaller or equal to X, where you work only on number without sign, so
if X>=0 then Int===Intg
else (X<0)
if X is integer then Int===Intg
else (Frac (X)<>0) Int(X)=Intg(X)+1
examples:
Int(3.2)=3
Intg(3.2)=3
Int(-3.2)=-3
Intg(-3.2)=-4

[Mohamed]

Very neat and good explanation Martin, you've mentioned it better than in the manual. (sometimes I wish I write certain parts of the manual).

Anyway, what I'm going to say is just the answer for Ben so if he got confused with Martin:

You want to always round up number x for example, don't you?
Use Int(x)+sign(x)
Assuming that sign(x) gives 1 for a positive number, and -1 for a negative one.
So if the nuber is 3.2, it'll be 4, and if it's -3.2 it'll be -4.

Isn't this what you want?

[Martin]

You want to always round up number x for example, don't you?
Use Int(x)+sign(x)
Assuming that sign(x) gives 1 for a positive number, and -1 for a negative one.
So if the nuber is 3.2, it'll be 4, and if it's -3.2 it'll be -4.

and what about "integers"?
Int(4.0000)+sign(4.0000)=5

[Ben C]

Thanks, that's great.

Although, I still wish Casio would let you do something easier, like:

Locate 1,1,Rnd 1(A)

Oh well...


-Ben

[2072]

You could do this too:

Locate 1,1 int (A+0.5)

or

Locate 1,1 int (A+.5)

if you want to save a byte.

[Ben C]

Hmmmm...that's so crazy it might work!

Now why didn't I think of that?