boolean DateCalc_leap_year(Z_int year) { Z_int yy; return( ((year AND 0x03) == 0) and ( (((yy = (Z_int) (year / 100)) * 100) != year) or ((yy AND 0x03) == 0) ) ); } const Z_int DateCalc_Days_in_Year_[2][14] = { { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, { 0, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } }; const Z_int DateCalc_Days_in_Month_[2][13] = { { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };