timegm

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Version: 2001-12-26 (openSuse - 09/10/07)

Section: 3 (Bibliothèques de fonctions)

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timegm, timelocal - gmtime ¤È localtime ¤ÎµÕ´Ø¿ô

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#include <time.h>



time_t timelocal(struct tm *tm);



time_t timegm(struct tm *tm);
 

ÀâÌÀ

timelocal() ´Ø¿ô¤È timegm() ´Ø¿ô¤Ï¡¢¤½¤ì¤¾¤ì localtime(3) ´Ø¿ô¤È gmtime(3) ´Ø¿ô¤ÎµÕ´Ø¿ô¤Ç¤¢¤ë¡£

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POSIX.1-2001 ¤Ë¤Ï¤Ê¤¤¡£ BSD ·Ï¤Ë¸ºß¤¹¤ë¡£

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¤³¤ì¤é¤Î´Ø¿ô¤Ï GNU ¤Î³ÈÄ¥¤Ç¤¢¤ë¡£ timelocal() ´Ø¿ô¤Ï POSIX ¤Îɸ½à´Ø¿ô mktime(3) ¤ÈƱ¤¸¤â¤Î¤Ç¤¢¤ë¡£ ¤Î¤Ç¡¢¤³¤ì¤ò»È¤¦Íýͳ¤Ï¤Ê¤¤¤Ï¤º¤Ç¤¢¤ë¡£

timegm() ¤ò°Ü¿¢À­¤¬¤¢¤ë¤è¤¦¤Ê¤«¤¿¤Á¤Ç¼Â¸½¤¹¤ë¤Ë¤Ï¡¢ TZ ´Ä¶­ÊÑ¿ô¤ò UTC ¤ËÀßÄꤷ¤Æ¤«¤é mktime(3) ¤ò¸Æ¤ó¤Ç¡¢ TZ ¤ÎÃͤò¼èÆÀ¤¹¤ì¤Ð¤è¤¤¡£ Î㤨¤Ð¼¡¤Î¤è¤¦¤Ë¤Ê¤ë¤À¤í¤¦¡£


#include <time.h>

#include <stdlib.h>



time_t my_timegm (struct tm *tm)

{

    time_t ret;

    char *tz;



    tz = getenv("TZ");

    setenv("TZ", "", 1);

    tzset();

    ret = mktime(tm);

    if (tz)

        setenv("TZ", tz, 1);

    else

        unsetenv("TZ");

    tzset();

    return ret;

}

´ØÏ¢¹àÌÜ

gmtime(3), localtime(3), mktime(3), tzset(3)