whence_scm       3618 src/extlib.c     ScmObj whence_scm;
whence_scm       3630 src/extlib.c     if (SCM_NULLP(SCM_OPTARGS)) whence_scm = SCM_MAKE_INT(SEEK_SET);
whence_scm       3632 src/extlib.c       whence_scm = SCM_CAR(SCM_OPTARGS);
whence_scm       3635 src/extlib.c     if (!SCM_INTP(whence_scm)) Scm_Error("small integer required, but got %S", whence_scm);
whence_scm       3636 src/extlib.c     whence = SCM_INT_VALUE(whence_scm);