/* Looking up value labels. */
const char *val_labs_find (const struct val_labs *, const union value *);
/* Looking up value labels. */
const char *val_labs_find (const struct val_labs *, const union value *);
/* Adding value labels. */
bool val_labs_add (struct val_labs *, const union value *, const char *);
void val_labs_replace (struct val_labs *, const union value *, const char *);
/* Adding value labels. */
bool val_labs_add (struct val_labs *, const union value *, const char *);
void val_labs_replace (struct val_labs *, const union value *, const char *);
/* Iterating through value labels. */
const struct val_lab *val_labs_first (const struct val_labs *);
/* Iterating through value labels. */
const struct val_lab *val_labs_first (const struct val_labs *);