Scm_LogIor        178 src/extlib.c     ScmObj cp, r = Scm_LogIor(x, y);
Scm_LogIor        180 src/extlib.c       r = Scm_LogIor(r, SCM_CAR(cp));
Scm_LogIor       2179 src/gauche.h   SCM_EXTERN ScmObj Scm_LogIor(ScmObj x, ScmObj y);