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yap-6.3/packages/PLStream/libtai/taia_sub.c
Vitor Santos Costa 5418f55d74 fix pl-tai
2011-03-09 13:05:03 +00:00

22 lines
428 B
C

#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;
}
}