int num_samples_times_timebase = OUTPUT_FREQUENCY * card->new_frame_length + card->fractional_samples;
num_samples[card_index] = num_samples_times_timebase / TIMEBASE;
card->fractional_samples = num_samples_times_timebase % TIMEBASE;
int num_samples_times_timebase = OUTPUT_FREQUENCY * card->new_frame_length + card->fractional_samples;
num_samples[card_index] = num_samples_times_timebase / TIMEBASE;
card->fractional_samples = num_samples_times_timebase % TIMEBASE;