NASA Ocean Color

ocssw V2022

 #include <time.h>
 #include <timeutils.h>
 #include <ctype.h>
  
 /* ------------------------------------------------------------------- *
  * ymds2unix() - converts yr (ie 2002), mon (1-12), and day (1-31) of  *
  * month to secs since 1/1/70                                          *
  * ------------------------------------------------------------------- */
 double ymds2unix(int16_t year, int16_t month, int16_t day, double secs) {
     double usec;
     struct tm trec;
     time_t secSince;
  
     /*                                                  */
     /* calculate seconds from 1/1/70 to input year, day */
     /* and correct to GMT                               */
     /*                                                  */
     trec.tm_year = year - 1900;
     trec.tm_mon = month - 1;
     trec.tm_mday = day;
     trec.tm_hour = 0;
     trec.tm_min = 0;
     trec.tm_sec = 0;
     trec.tm_isdst = 0;
     secSince = mktime(&trec) - gmt_offset();
  
     /*                                                  */
     /* Now we total the seconds                         */
     /*                                                  */
     usec = secSince + secs;
  
     return usec;
 }

day

int32_t day

Definition: atrem_corl1v2.h:308

gmt_offset

time_t gmt_offset(void)

Definition: gmt_offset.c:8

float tm[MODELMAX]

Definition: atrem_corl1v2.h:248

ymds2unix

double ymds2unix(int16_t year, int16_t month, int16_t day, double secs)

Definition: ymds2unix.c:9

timeutils.h