AddSec.c

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#include "libFireBird.h"
 
dword AddSec(dword date, byte dateSec, int add)
{
  TRACEENTER();
 
  word                  mjd;
  int                   hour, min, sec;
  dword                 ret;
 
  mjd = MJD(date);
  hour= HOUR(date);
  min = MINUTE(date);
  sec = dateSec;
 
  sec += add % 60;
 
  if(sec < 0) min -= 1;
  else if(sec > 59) min += 1;
 
  add /= 60;
 
  min += add % 60;
 
  if(min < 0)
  {
    hour -= 1;
    min += 60;
  }
  else if(min > 59)
  {
    hour += 1;
    min -= 60;
  }
 
  hour += add / 60;
 
  if(hour < 0)
  {
    mjd -= 1;
    hour += 24;
  }
  else if(hour > 23)
  {
    mjd += 1;
    hour -= 24;
  }
  ret = DATE(mjd, hour, min);
 
  TRACEEXIT();
  return ret;
}