22 lines
428 B
C
22 lines
428 B
C
#include "taia.h"
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/* XXX: breaks tai encapsulation */
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void taia_sub(struct taia *t, struct taia *u, struct taia *v)
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{
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unsigned long unano = u->nano;
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unsigned long uatto = u->atto;
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t->sec.x = u->sec.x - v->sec.x;
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t->nano = unano - v->nano;
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t->atto = uatto - v->atto;
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if (t->atto > uatto) {
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t->atto += 1000000000UL;
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--t->nano;
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}
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if (t->nano > unano) {
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t->nano += 1000000000UL;
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--t->sec.x;
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}
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}
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