Re: [Discuss-gnuradio] PMT serialization/deserialization of doubles

[Dave NotTelling]

Well, looks like this was fixed may 2nd.

https://github.com/gnuradio/gnuradio/commit/cd07e5e56647a9380ccd0f25960164d72b338e10#diff-960cadcf7ef5dc2327e5200893d43163

On Thu, Jun 16, 2016 at 6:26 PM, Dave NotTelling 
wrote:

> 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 
> #include 
> #include 
>
> // 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
>
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[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 
#include 
#include 

// 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
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