c_gregorian_leap_p  700 ext/date/date_core.c     return monthtab[c_gregorian_leap_p(y) ? 1 : 0][m];
c_gregorian_leap_p 1787 ext/date/date_core.c     return yeartab[c_gregorian_leap_p(y) ? 1 : 0][m] + d;
c_gregorian_leap_p 2930 ext/date/date_core.c     return f_boolcast(c_gregorian_leap_p(ry));
c_gregorian_leap_p 5301 ext/date/date_core.c 	return f_boolcast(c_gregorian_leap_p(m_year(dat)));