is there something like jsvArrayBufferIteratorGetByteValue ?

To set a byte value in an Arraybuffer jsvArrayBufferIteratorSetByteValue(&it,value) is very helpful.
Is there an similar function to read a byte value using iterator ?
What I would like to do is something like this:

jsvArrayBufferIteratorSetByteValue(&itDestination,jsvArrayBufferIteratorGetByteValue(&itSource))