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For local time(): LOCAL TIME () functions are intended to transform the time in seconds since the epoch indicated by the time switch into a lost time in local time. Adjusts the time zone and seasonality. CX] Local time zone information is used as if localtime() is calling tzset().
There is a relation between a time in seconds since the epoch used as an Argument for localtime() and the tm tree (defined in the header) in that the outcome should be as specified in the term specified in the seconds since the epoch definitions (see the basic definitions volumes of IEEE Std 1003.
14 seconds since the epoch) adjusted for time zone and seasonality, with identical titles in terms of texture and text. TSF ] The same relation applies to localtime_r(). CX] The localtime() functions do not have to be re-entrant. Functions that do not have to be re-entrant do not have to be thread-safe.
Files asctime(), ctime(), gmtime() and localtime() returned value in one of two fixed objects: a resolved time frame and a character style arrays. TSF ] The purpose of the localtime_r() command is to transform the time in seconds since the epoch indicated by the specified time into a decoded time saved in the tree to which the results points point.
If you use the localtime_r() command, it also returns a cursor on the same tree. In contrast to localtime(), the re-entrant release is not necessary to put place names. Unless the re-entrant versions sets a tetname, they must not adjust either natural light or time zone. Once successfully completed, the localtime() returns a cursor to the split time frame.
Upon detecting an abnormality, localtime() returns a null pointer[CX] and sets verrno to indicate the abnormality. TSF ] After successfully completing, localtime_r() returns a cursor on the tree to which the resulting arguments points. Upon detecting an abnormality, localtime_r() returns a null cursor and sets verrno to indicate the abnormality.
Failure of localtime() [TSF] and localtime_r() if:: In the following example, the time() command is used to compute the time in seconds since January 1, 1970 0:00 AM clock (the epoch), localtime() to translate this value into a decayed time, and asctime() to transform the decayed time value into a print-able character.
Use the following example to get the change time for a filename. Using the localtime() command, the time_t value of the last change date obtained from a prior call to stat() is converted to a tm containing the year, months, days, etc. tm structures are converted by the localtime() command. <font color="#ffff00">-==- proudly presents
This is a thread-safe operation that will return value in a user-provided buffers instead of possibly using a fixed range of information that can be overridden each time it is called. An indication that the localtime() functions need not be re-entrant is added to the Description. There is a localtime_r() feature for aligning with the POSIX Threads extension.
Localtime_r () functions are flagged as part of the Thread-Safe Functions options. Update the APPLICATION AREA section to provide a reference to the threaded safety feature and how to avoid using a fixed range of information. Add the restrictive codeword to the localtime_r() protocol to adapt it to the ISO/IEC 9899:1999norm.
The 1-2001/Cor 2-2004, point XSH/TC2/D6/55 is used and updates the localtime_r () troubleshooting. 2-2004, point XSH/TC2/D6/56 is used, whereby the request is added that if localtime_r() does not specify the tag specified by us, it does not specify the tag specified by us. If you are using a system that supports XSI, the taglight, time zone, and time name should be configured to return all information for the same time zone.
Updated the localtime_r () descriptor to include overhead, time zone, and time name.