Difference between CDec and CDbl

[James]

Can anyone explain the difference between these two conversion
functions? Thanks

[Josip Medved]

Re: Difference between CDec and CDbl

One converts to Decimal, other to Double?

Can anyone explain the difference between these two conversion
functions? Thanks

--
Greetings,
Josip Medved

http://www.jmedved.com

[Herfried K. Wagner [MVP]]

Re: Difference between CDec and CDbl

"James" <jamesburkett@g mail.comschrieb :

Can anyone explain the difference between these two conversion
functions?

They convert to different types.

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

[James]

Re: Difference between CDec and CDbl

i meant the technical differences... what does one read that the other
cannot? Thanks.


Herfried K. Wagner [MVP] wrote:

"James" <jamesburkett@g mail.comschrieb :

Can anyone explain the difference between these two conversion
functions?

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

[Josip Medved]

Re: Difference between CDec and CDbl

i meant the technical differences... what does one read that the other

cannot? Thanks.

Since both decimal as double are numeric types, I doubt that there is
any difference, as in from what they can convert, but there is big
difference in types to which they convert to.

--
Greetings,
Josip Medved

http://www.jmedved.com

[Jay B. Harlow [MVP - Outlook]]

Re: Difference between CDec and CDbl

In addition to the other comments:

CDec returns a Decimal value.

CDbl returns Double value.

As you may know TypeOf Decimal IsNot TypeOf Double. Decimal is a base 10
floating point number, while Double is a base 2 floating point number. They
have different precisions & ranges.

If you have Option Strict On (you do have Option Strict On don't you)
attempting to use CDbl and assign it to a Decimal will cause a compile
error. While attempting to use CDec and assign it to a Double will cause an
implicit conversion from Decimal to Double (read it will work, but you
really did CDbl(CDec(?)).

--
Hope this helps
Jay B. Harlow [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net


"James" <jamesburkett@g mail.comwrote in message
news:1159115402 .663951.3770@i4 2g2000cwa.googl egroups.com...

Can anyone explain the difference between these two conversion
functions? Thanks
>

[James]

Re: Difference between CDec and CDbl

As you may know TypeOf Decimal IsNot TypeOf Double. Decimal is a base 10

floating point number, while Double is a base 2 floating point number. They
have different precisions & ranges.

Can you explain this a little more? I work well with examples and I
don't really understand what you're saying here. Thanks!

[Jay B. Harlow [MVP - Outlook]]

Re: Difference between CDec and CDbl

Binary floating point & .NET:

http://www.yoda.arachsys.com/csharp/floatingpoint.html

Decimal floating point in .NET:

http://www.yoda.arachsys.com/csharp/decimal.html

The short of it is a Decimal number can exactly represent base 10 (ergo
Decimal) numbers. Double (and Single) cannot exactly represent base 10
numbers, as they store the numbers as base 2.

--
Hope this helps
Jay B. Harlow [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net


"James" <jamesburkett@g mail.comwrote in message
news:1159124973 .838383.288750@ d34g2000cwd.goo glegroups.com.. .

>As you may know TypeOf Decimal IsNot TypeOf Double. Decimal is a base 10
>floating point number, while Double is a base 2 floating point number.
>They
>have different precisions & ranges.

>
>
Can you explain this a little more? I work well with examples and I
don't really understand what you're saying here. Thanks!
>