[Gretl-users] Re: strptime() and Win vs Unix

> -----Oorspronkelijk bericht----- > Van: Cottrell, Allin > ... > Unix-type systems treat this epoch time as a signed integer, so negative offsets > relative to midnight of 1969-12-31/1970-01-01 can be represented. MS > Windows treats it as an unsigned integer and so cannot handle prior dates. I think on MS Windows time_t is also a signed integer (int64); see https://docs.microsoft.com/en-us/cpp/c-runtime-library/standard-types?vie... Also, mktime could not have -1 as a return value if time_t was unsigned. Rather it's the implementation that refuses to deal with dates before 1-1-1970; see https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/mktime-m...