rcsnum_aton
int rcsnum_aton(const char *, const char **, RCSNUM *);
if (rcsnum_aton(str, &ep, num) < 0 || *ep != '\0') {
int rcsnum_aton(const char *, const char **, RCSNUM *);
if (rcsnum_aton(str, &ep, num) < 0 || *ep != '\0') {
if (rcsnum_aton(lstr, &ep, &lnum) == 0 || (*ep != '\0'))
if (rcsnum_aton(rstr, &ep, &rnum) == 0 || (*ep != '\0'))