Question

So what would be the datatype I am looking at. I know AS3 Number is 64 bit but it is double precision. I am converting code to C++ and since in AS3 it is valid to do this:

var i:Number = 123;
i >> 3; // Yeah shift right a double precision datatype

So in C++ I need now a datatype that is in the integral range of the Number type in AS3 (which is double precision). Please note I am converting and encode/decode functions that were previously used with the AS3 code so I must have the same result.

Thanks in advance.

Answer 1

The AS3 shift operator converts the expression being shifted and the shift amount to 32-bit integers. In C++, you emulate this behavior by casting a double data type to an int and shifting:

#include <iostream>

int main(int argc, char **argv) {
    double i(91.5);
    int v(static_cast<int>(i) >> 3);
    std::cout << "v = " << v << std::endl; // outputs "v = 11"
    return 0;
}