Changed NSNumber to NSDecimalNumber when retrieving doubles from db

[rafek]

This will allow for better precision = less rounding errors.

[ccgus]

Thanks for doing this. I don't want to change the behavior for a 2.x update of FMDB though- and swapping out classes behind the scenes does that. So, maybe for the next big release (3.0?) I'll add this in.

Do you have any tests where you can show NSNumber not being precise enough by any chance? If I can test and reproduce a failure, it's more likely to get added.

[kaala]

I had a decimal precision problem, the column type I got is real.
this fixed the problematic value. but also created precision problem on another value.

I patched by using this code:

NSString *str=[self stringForColumnIndex:columnIdx];
returnValue = [NSDecimalNumber decimalNumberWithString:str];

[igorkulagin]

I would like to vote up this request.
Also NSNumber is superclass of NSDecimalNumber and existing implementations in 3rd-party apps should work.