Question

I have the following C macro from libpurple:

#define yahoo_get16(buf) ((((*(buf))<<8)&0xff00) + ((*((buf)+1)) & 0xff))

How can i write that as a function that will get as a parameter a QByteArray and retrun a quint16 value using the algorithm in the c macro above?

I’ve asked a similar question that will convert from quint16 to QByteArray here so basically what i am trying to do now is the reverse of that function.

Thanks.

Answer 1

I would try something along the following lines (i.e. let QDataStream do the work for you, which can be constructed with a QByteArray, let’s call it yourByteArray):

QDataStream dataStream(yourByteArray);
quint16 foo;
dataStream >> foo;

I hope that helps.

EDIT: This question looks somewhat related.