Expected output running Predistortion

[robstewart57]

Hi, in 4e0b5b6 I've updated the compilation instructions for Predistortion. Is the output below correct? It doesn't appear to be doing any computation, the output files are empty...

$ ./dpd 
Opened file in_i.txt
Opened file in_q.txt
Opened file out_i.txt
Opened file out_q.txt
Processed 0 complex samples.
Closing files.
$ ls -l
total 180
-rwxr-xr-x 1 rob wheel 158850 Jul 15 15:02 dpd
-rw-r--r-- 1 rob wheel  10504 Jul 15 15:03 in_i.txt
-rw-r--r-- 1 rob wheel  10475 Jul 15 15:03 in_q.txt
-rw-r--r-- 1 rob wheel      0 Jul 15 15:03 out_i.txt
-rw-r--r-- 1 rob wheel      0 Jul 15 15:03 out_q.txt