@Marcus. Instead of using a grc gui flowgraph to test our block, we have written a qa test code in python which connects vector source, block that we are testing and vector sink just like the example given in out of tree modules to generate square of the input items.
We are writing an alamouti code block which takes in an input stream of N complex numbers and gives out 2 output steams of N items each. I will attach the C++ code of block( http://pastebin.com/Kdnk1t8x ) and also the python qa test code below(http://pastebin.com/da21Ww4B). <http://pastebin.com/da21Ww4B> On Wed, May 28, 2014 at 2:58 PM, Martin Braun <martin.br...@ettus.com>wrote: > On 28.05.2014 11:13, Martin Braun wrote: > >> On 28.05.2014 09:45, Karan Talasila wrote: >> >>> Hi >>> we have written a c++ block using out of tree modules which uses a >>> sync block that outputs same no of items as input items given. we have >>> written a python test file where the inputs and outputs are complex >>> floats. The test code is running well until 4096 items. But when the >>> output items size is greater than or equal to 8192, ctest shows an >>> assertion error which says >>> >>> -10+5j !=10+5j beyond 7 places. >>> >> >> This looks like floating point quantization errors. Show us your QA, and >> make sure you're using the assertFloatTuplesAlmostEqual (not sure if >> that's the right name) call. >> > > Ah, as Marcus M points out, this is a signature error, rather than > quantization :) > Still, this all points to your code being incorrect, or your QA making > invalid assumptions. > > Maybe you should be tracking state in your block (these number indicate > that more than 1 work function call seem unveil your bug). > > > M > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Regards Karan Talasila
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
