[Discuss-gnuradio] PMT serialization/deserialization of doubles

[Dave NotTelling]

I recently ran across this "bug":

(running ipython)

[code]

In [18]: import pmt

In [19]: pmt.to_double(pmt.deserialize_str(pmt.serialize_str(pmt.from_double(1234567890.0))))

Out[19]: 1234567936.0

In [20]: pmt.to_double(pmt.from_double(1234567890.0))

Out[20]: 1234567890.0

[/code]

Here is the C++ code:

[code]

#include <stdio.h>

#include <stdlib.h>

#include <pmt/pmt.h>

// compiled with "g++ doublesTest.cc -o doublesTest -lgnuradio-pmt"

int main(){

    const double orig = 1234567890.0;

    const double serdes = pmt::to_double(pmt::deserialize_str(pmt::serialize_str(pmt::from_double(orig))));

    const double normal = pmt::to_double(pmt::from_double(orig));

    printf("original:%0.3f, serdes:%0.3f, noserdes:%0.3f\n", orig, serdes, normal);

    return 0;

}

[/code]

[output from c++]

original:1234567890.000, serdes:1234567936.000, noserdes:1234567890.000

[/output from c++]

 Is this an intended outcome?  

Thanks!

-Dave