cpp/chrono/year month day/operator days

Converts to a std representing the same date as this.

@1@ If ok is true, the return value holds a count of days from the std epoch (1970-01-01) to. The result is negative if represent a date prior to it.

@@ Otherwise, if the stored year and month are valid ( is ), then the returned value is.

@@ Otherwise (if is ), the return value is unspecified.

@@ A std in the range, when converted to and back, yields the same value.

@2@ Same as but returns std instead. Equivalent to.