how to check whether a number is an integer?

[André]

Hello,

I need to know whether the result of a division is a integer or not.
dim x =60
dim y = 3

if x/y is a integer then
....
else
....
end if

How can i know that?
Thanks
André

[Theo Verweij]

Re: how to check whether a number is an integer?

If x/y = x\y then
'Is an integer
else
'is not
end if

André wrote:

Hello,

I need to know whether the result of a division is a integer or not.
dim x =60
dim y = 3

if x/y is a integer then
....
else
....
end if

How can i know that?
Thanks
André

[André]

Re: how to check whether a number is an integer?

Thanks

"Theo Verweij" <tverweij@xs4al l.nlschreef in bericht
news:%231XBiNe% 23GHA.4376@TK2M SFTNGP03.phx.gb l...
If x/y = x\y then
'Is an integer
else
'is not
end if

André wrote:

Hello,
>
I need to know whether the result of a division is a integer or not.
dim x =60
dim y = 3
>
if x/y is a integer then
....
else
....
end if
>
How can i know that?
Thanks
André
>

[Mythran]

Re: how to check whether a number is an integer?



"André" <svs@sdv.sdwrot e in message
news:eahb7ge#GH A.4464@TK2MSFTN GP02.phx.gbl...

Thanks
>
"Theo Verweij" <tverweij@xs4al l.nlschreef in bericht
news:%231XBiNe% 23GHA.4376@TK2M SFTNGP03.phx.gb l...
If x/y = x\y then
'Is an integer
else
'is not
end if
>
André wrote:

>Hello,
>>
>I need to know whether the result of a division is a integer or not.
>dim x =60
>dim y = 3
>>
>if x/y is a integer then
>....
>else
>....
>end if
>>
>How can i know that?
>Thanks
>André
>>

>
>

I would actually use Mod (modulus) to determine if a division result
(remainder) is 0.

Example:

Dim x As Integer = 12
Dim y As Integer = 6
Dim isInt As Boolean = x Mod y = 0

Console.WriteLi ne( _
"Remainder of {0} / {1} = {2} : Integral = {3}", _
x.ToString(), _
y.ToString(), _
(x / y).ToString(), _
(x Mod y = 0).ToString() _
)

The last parameter (x Mod y = 0) is the part that I would use :) So:

If x Mod y = 0 Then
' x / y results in a 0 remainder, meaning an int result (given that the
result falls within the scope of an integer and not a long.
Else
' x / y results in a non-0 remainder, meaning a floating point result.
End If

HTH :)

Mythran

[Herfried K. Wagner [MVP]]

Re: how to check whether a number is an integer?

"André" <svs@sdv.sdschr ieb:

I need to know whether the result of a division is a integer or not.
dim x =60
dim y = 3
>
if x/y is a integer then
...
else
...
end if

'If Int(x) = x Then...'

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>

[Cor Ligthert [MVP]]

Re: how to check whether a number is an integer?

Andre,

Put option strict on in top of your program, than it will divide only
doubles using the non integer divide.

Cor

"André" <svs@sdv.sdschr eef in bericht
news:Ou8oULe%23 GHA.1172@TK2MSF TNGP03.phx.gbl. ..

Hello,
>
I need to know whether the result of a division is a integer or not.
dim x =60
dim y = 3
>
if x/y is a integer then
...
else
...
end if
>
How can i know that?
Thanks
André
>