Trapping quiet NaN

Question

I have an application where some component occasionally inserts a qNaN in a large data stream, which then invalidates the entire processing (FFT on a vector containing a single

Answer 1

I doubt there's a way to put a data breakpoint all over the memory to catch all NaNs.

I'd look for the code that inserts into the vector and test for NaN there:

if ( x != x )
    assert(!"NaN detected");