src/libstddjb/tain_sub.c


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/* ISC license. */

#include <skalibs/tai.h>

int tain_sub (tain_t *t, tain_t const *u, tain_t const *v)
{
  tain_t tt ;
  tt.sec.x = u->sec.x - v->sec.x ;
  tt.nano = u->nano - v->nano ;
  if (tt.nano > u->nano)
  {
    tt.sec.x-- ;
    tt.nano += 1000000000U ;
  }
  *t = tt ;
  return 1 ;
}