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       _systime.c - scc - simple c99 compiler
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       ---
       _systime.c (381B)
       ---
            1 #include <time.h>
            2 
            3 #include "../../libc.h"
            4 
            5 time_t
            6 _systime(struct tm *tm)
            7 {
            8         time_t t = 0;
            9         int year = tm->tm_year + MINYEAR;
           10 
           11         for (int i = EPOCH; i < year; ++i)
           12                 t += _daysyear(i) * SECDAY;
           13         for (int i = 0; i < tm->tm_mon; ++i)
           14                 t += _daysmon[i] * SECDAY;
           15 
           16         t += tm->tm_sec;
           17         t += tm->tm_min * SECMIN;
           18         t += tm->tm_hour * SECHOUR;
           19         t += (tm->tm_mday-1) * SECDAY;
           20         return t;
           21 }