taia_addsec - add n seconds to a struct taia

taia_addsec adds secs seconds to s and writes the result to t.  The inputs and output may overlap.

       taia_addsec - add n seconds to a struct taia

taia_sub(3), taia_add(3)

                                                                                                  taia_addsec(3)

#include<libowfat/taia.h>

       extern int taia_addsec(struct taia* t,const struct taia* s,
                          int secs);