FEEDEQ_IF2PREAMP
return (((i < 0 || *buf == '-') ? -1 : 1) * FEEDEQ_IF2PREAMP(i, f));
FEEDEQ_IF2PREAMP(FEEDEQ_GAIN_MIN, 0))
FEEDEQ_IF2PREAMP(FEEDEQ_GAIN_MAX, 0))
#define FEEDEQ_PREAMP_DEFAULT FEEDEQ_IF2PREAMP(0, 0)