blrange_t
blrange_t *range;
blrange_t drange;
blrange_t *
blrange_t *range;
if ((range = malloc(sizeof (blrange_t))) == NULL)
bslcvtfull(const bslabel_t *label, const blrange_t *bounds, int flags,
bclearcvtfull(const bclear_t *clearance, const blrange_t *bounds,