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php5  5.3.10
Functions
interval.c File Reference
#include "timelib.h"
#include <math.h>

Go to the source code of this file.

Functions

timelib_rel_timetimelib_diff (timelib_time *one, timelib_time *two)

Function Documentation

Definition at line 24 of file interval.c.

{
       timelib_rel_time *rt;
       timelib_time *swp;
       timelib_sll dst_h_corr = 0, dst_m_corr = 0;
       timelib_time one_backup, two_backup;

       rt = timelib_rel_time_ctor();
       rt->invert = 0;
       if (one->sse > two->sse) {
              swp = two;
              two = one;
              one = swp;
              rt->invert = 1;
       }

       /* Calculate correction for DST change over, but only if the TZ type is ID
        * and it's the same */
       if (one->zone_type == 3 && two->zone_type == 3
              && (strcmp(one->tz_info->name, two->tz_info->name) == 0)
              && (one->z != two->z))
       {
              dst_h_corr = (two->z - one->z) / 3600;
              dst_m_corr = ((two->z - one->z) % 3600) / 60;
       }

       /* Save old TZ info */
       memcpy(&one_backup, one, sizeof(one_backup));
       memcpy(&two_backup, two, sizeof(two_backup));

    timelib_apply_localtime(one, 0);
    timelib_apply_localtime(two, 0);

       rt->y = two->y - one->y;
       rt->m = two->m - one->m;
       rt->d = two->d - one->d;
       rt->h = two->h - one->h + dst_h_corr;
       rt->i = two->i - one->i + dst_m_corr;
       rt->s = two->s - one->s;
       rt->days = abs(floor((one->sse - two->sse - (dst_h_corr * 3600) - (dst_m_corr * 60)) / 86400));

       timelib_do_rel_normalize(rt->invert ? one : two, rt);

       /* Restore old TZ info */
       memcpy(one, &one_backup, sizeof(one_backup));
       memcpy(two, &two_backup, sizeof(two_backup));

       return rt;
}

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