format double

currently im converting a Standard::String to a double - this is the code im using

retArray[i] = System::Convert::ToDouble(strArray[i]);

as you can see, i have two arrays, one of doubles, the other of strings.

now it goes fine -  except for example i have a string value of "0.70", after the conversion the value in the double array is 0.699999999

shouldnt be that big of a deal, but im doing a number of iterations after that value is obtained, and i want it to be exact.

any idea how to get the value in after its passed to be 0.700000000????

thanks in advance

~b
LVL 8
bramsquadAsked:
Who is Participating?
 
lakshman_ceConnect With a Mentor Commented:
Try to get the object's value using

Object* defaultValue== __box( Convert::ToDouble( strArray[i]) );

check value here

retArray[i] = *dynamic_cast<__box Double*>(obj);

Also you can use the IFormatProvider class to change the formatting.
0
 
AxterConnect With a Mentor Commented:
Hi bramsquad,
> any idea how to get the value in after its passed to be 0.700000000????
A double is not an exact number.
If you need higher precission, you need to use a different type.

Cheers!
0
 
bramsquadAuthor Commented:
thanks axter,

different type like what?

~b
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.