diff options
Diffstat (limited to 'ucspi-tcp-0.88/taia_sub.c')
-rw-r--r-- | ucspi-tcp-0.88/taia_sub.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/ucspi-tcp-0.88/taia_sub.c b/ucspi-tcp-0.88/taia_sub.c new file mode 100644 index 0000000..7956647 --- /dev/null +++ b/ucspi-tcp-0.88/taia_sub.c @@ -0,0 +1,21 @@ +#include "taia.h" + +/* XXX: breaks tai encapsulation */ + +void taia_sub(struct taia *t,struct taia *u,struct taia *v) +{ + unsigned long unano = u->nano; + unsigned long uatto = u->atto; + + t->sec.x = u->sec.x - v->sec.x; + t->nano = unano - v->nano; + t->atto = uatto - v->atto; + if (t->atto > uatto) { + t->atto += 1000000000UL; + --t->nano; + } + if (t->nano > unano) { + t->nano += 1000000000UL; + --t->sec.x; + } +} |