m_virtual_sg     1797 ext/date/date_core.c     sg = m_virtual_sg(x); /* !=m_sg() */
m_virtual_sg     1819 ext/date/date_core.c     c_jd_to_commercial(m_local_jd(x), m_virtual_sg(x), /* !=m_sg() */
m_virtual_sg     1847 ext/date/date_core.c     c_jd_to_commercial(m_local_jd(x), m_virtual_sg(x), /* !=m_sg() */
m_virtual_sg     1868 ext/date/date_core.c     c_jd_to_weeknum(m_local_jd(x), f, m_virtual_sg(x), /* !=m_sg() */
m_virtual_sg     5152 ext/date/date_core.c 		     NUM2INT(n), NUM2INT(k), m_virtual_sg(dat), /* !=m_sg() */
m_virtual_sg     5303 ext/date/date_core.c     c_civil_to_jd(m_year(dat), 3, 1, m_virtual_sg(dat),
m_virtual_sg     5305 ext/date/date_core.c     c_jd_to_civil(rjd - 1, m_virtual_sg(dat), &ry, &rm, &rd);