Datatypes

Gnuradio supports most primitive datatypes in C++, as well as complex and vector types grouping them together. The types used in the companion app are enumerated in grc/core/Constants.py in the sourcetree.

Complex

The Complex data type generates 8 bytes for each complex data item; where the first 4 bytes are for the real number and the next 4 bytes are for the imaginary number. Both the real and the imaginary values are 4-byte floating point numbers.

Short

The Short data type generates 4 bytes for each short data item; where the first 2 bytes are for the real number (I) and the next 2 bytes are for the imaginary number (Q).

Related Links

http://blog.sdr.hu/grblocks/types.html