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Posted 19 Nov 2002

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CDFValue - Fractional/Decimal conversion class

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22 Nov 20021 min read
A class used to manipulate and convert decimal and fractional data.

Sample Image - DFValue_ss.jpg

As a remodeling professional and an avid woodworking enthusiast I realized, after many hours of searching the net for woodworking software that there was a need for applications that specialize in this area. Therefore I came to the conclusion that I would either have to wait for someone else to develop them, pay their price and hope they had the functionality that I needed or develop them myself and integrate the functionality I needed into my apps.

I determined that the first place to start was to develop a class to handle decimal and fractional data with the ability to convert between the two. Therefore I created the CDFValue class. This class encapsulates this functionality and provides a rich set of methods providing the user with the ability to handle decimal, fractional and a mixture of both data types and to be able to manipulate and convert this data.

In the example below the local variable gbl_precision is used to define the required precision. In my applications I use this variable as a global and allow the user to set it to either 1/16", 1/32" or 1/64". In the example I set it at 1/64". If units not given they are assumed to be in feet.

int gbl_precision = 64;
			
CDFValue DFVal1;
CDFValue DFVal2;
CDFValue DFRes;
CString  strVal1 = "1'6\"";
			
DFVal1.SetDFValue(strVal1);
DFVal2.SetDFValue(1.5);

DFRes = DFVal1 + DFVal2;  //DFRes = 3'
DFRes = DFVal1 - DFVal2;  //DFRes = 0
DFRes = DFVal1 * DFVal2;  //DFRes = 2'3"
DFRes = DFVal1 / DFVal2;  //DFRes = 1
DFVal1 == DFVal2;		  //TRUE

As you can see from the example the CDFValue class is easy to use and very versatile. Values may be in fractional

80", 5', 5'6", 5'6-1/2"

in decimal

.15, 1, 1.5

or a mixture of the two

12.5", 1.5'

Thats all there is to it!

You may use this class freely, the only thing I ask is that if you like this class and use it you give credit where credit is due. i.e. Treat me as I would treat you.

License

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Comments and Discussions

 
GeneralA little work.. Pin
CanopenR18-Dec-08 10:37
CanopenR18-Dec-08 10:37 
GeneralNew Interface Pin
reichj23-Sep-06 3:46
reichj23-Sep-06 3:46 
GeneralOr Pin
Ryan_Roberts22-Nov-02 0:59
Ryan_Roberts22-Nov-02 0:59 
GeneralRe: Or Pin
Old Timer22-Nov-02 9:36
Old Timer22-Nov-02 9:36 
GeneralMissing links... Pin
Marc Clifton20-Nov-02 1:35
mvaMarc Clifton20-Nov-02 1:35 
GeneralRe: Missing links... Pin
Uwe Keim20-Nov-02 1:47
sitebuilderUwe Keim20-Nov-02 1:47 
GeneralRe: Missing links... Pin
Old Timer20-Nov-02 9:32
Old Timer20-Nov-02 9:32 
GeneralYes, much better Pin
Marc Clifton22-Nov-02 8:31
mvaMarc Clifton22-Nov-02 8:31 
GeneralAaah ... Pin
20-Nov-02 1:33
suss20-Nov-02 1:33 
GeneralRe: Aaah ... Pin
Marc Clifton20-Nov-02 1:36
mvaMarc Clifton20-Nov-02 1:36 
GeneralRe: Aaah ... Pin
Drew Stainton21-Nov-02 3:39
Drew Stainton21-Nov-02 3:39 

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