how to know integer is power of 1 or 2???

[ypuech]

I think you can use modulo:

mod 7 2
1.0
mod 8 2
0.0
mod 16 2
0.0
mod 11 2
1.0
mod 1 2
1.0
When mod x 2 = 0 : x is power of two
When mod x 2 = 1 : x is not power of two

[davestewart]

Hey,

In English we say:
"odd" : 1, 3, 5
"even" : 2, 4, 6

"Power of" would be:
"to the power of 2" or "squared" : 4 x 4 = 16
"to the power of 3" or "cubed" : 4 x 4 x 4 = 64

[thatoneguy]

Another way to express it is mathematically:

(2n) = "Even" [2,4,6,8,...]
and
((2n) -1) = "Odd" [1,3,5,7,...]

anyway this should do it:



fn ParImpar n =


(local b
b = abs(mod n 2)if b == 0 then trueelse if b == 1 then false
else undefined
)

EstaImpar = ParImpar -1
EstaPar = ParImpar -2
EstaImpar = ParImpar 3
EstaPar = ParImpar 4
EstaNada = ParImpar 2.343

[luigi]

wooo guys thanks for the quick reply.

is funny having to know al the names translation for matematical concepts.

ypuech thanks for the mod sample i thing i wil go with this.

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