double fltp = modf(numchans / oversample_rate, &intp);
if(fltp != 0.0)
throw std::invalid_argument("gr_pfb_channelizer: oversample rate must be N/i for i in [1, N]");
double fltp = modf(numchans / oversample_rate, &intp);
if(fltp != 0.0)
throw std::invalid_argument("gr_pfb_channelizer: oversample rate must be N/i for i in [1, N]");