skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
git clone https://ccx.te2000.cz/git/skalibs
Log | Files | Refs | README | LICENSE

utc_from_tai.c (289B)

      1 /* ISC license. */
      2 
      3 #include <errno.h>
      4 #include <skalibs/djbtime.h>
      5 #include "djbtime-internal.h"
      6 
      7 int utc_from_tai (uint64_t *u, tai const *t)
      8 {
      9   int r = 1 ;
     10   uint64_t tt = t->x - 10 ;
     11   if (t->x < 10U) return (errno = EINVAL, 0) ;
     12   r += leapsecs_sub(&tt) ;
     13   *u = tt ;
     14   return r ;
     15 }