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(loan_owed): New, factored out common code.

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(coll, fina, repa, shark, disloan): Use it.
This commit is contained in:
Markus Armbruster 2004-08-20 08:16:34 +00:00
parent e502056dab
commit e7c9da21e5
6 changed files with 49 additions and 147 deletions
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36
src/lib/subs/trdsub.c
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@ -282,3 +282,39 @@ get_outstand(int cnum)
}
return loantot;
}
/*
* Return amount due for LOAN at time PAYTIME.
*/
double
loan_owed(struct lonstr *loan, time_t paytime)
{
time_t rtime; /* regular interest time */
time_t xtime; /* double interest time */
double rate;
int dur;
/*
* Split interval paytime - l_lastpay into regular (up to
* l_duedate) and extended (beyond l_duedate) time.
*/
rtime = loan->l_duedate - loan->l_lastpay;
xtime = paytime - loan->l_duedate;
if (rtime < 0) {
xtime += rtime;
rtime = 0;
}
if (xtime < 0) {
rtime += xtime;
xtime = 0;
}
if (CANT_HAPPEN(rtime < 0))
rtime = 0;
dur = loan->l_ldur;
if (CANT_HAPPEN(dur <= 0))
dur = 1;
rate = loan->l_irate / 100.0 / (dur * SECS_PER_DAY);
return loan->l_amtdue * (1.0 + (rtime + xtime * 2) * rate);
}