Less system cost

Hello!

A quick question this time:

what is less system costfull: use and do some quick calculations using double, or convert a number from QString to float and than to that same calculations using float?


Context:

Using QDoubleSpinBox for number inputs, where I can choose to use the Changed slot picking a double value or the value as a QString.

Thanks,

Momergil

Quote:

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Originally Posted by Momergil

Hello!

A quick question this time:

what is less system costfull: use and do some quick calculations using double, or convert a number from QString to float and than to that same calculations using float?

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Using double all the way is less expensive than keeping a string and converting it to a float.