Man page 9 : snd_interval_refine

snd_interval_refine - refine the interval value of configurator

int snd_interval_refine(struct snd_interval *  i , const struct snd_interval *  v );

i
    the interval value to refine

v
    the interval value to refer to

Refines the interval value with the reference value. The interval is changed to the range satisfying both intervals. The interval status (min, max, integer, etc.) are evaluated.

Positive if the value is changed, zero if itAqs not changed, or a negative error code.