daysFrom1970ToYear  177 Source/wtf/DateMath.cpp     double msFromApproxYearTo1970 = msPerDay * daysFrom1970ToYear(approxYear);
daysFrom1970ToYear  187 Source/wtf/DateMath.cpp     return static_cast<int>(msToDays(ms) - daysFrom1970ToYear(year));
daysFrom1970ToYear  300 Source/wtf/DateMath.cpp     double yearday = floor(daysFrom1970ToYear(year));