Docs for the guile interface to gnucash?
nowan at nowan.org
Mon May 17 00:46:29 EDT 2004
Derek Atkins <warlord at MIT.EDU> writes:
> I believe it is possible to add new functions via scheme (although I
> don't know if the core engine will pick them up properly). The "pmt"
> function is definitely written in scheme, so writing a different
> function that compounds interest differently shouldn't be too hard.
Not hard at all. With this in my config.user:
; These three functions will calculate scheduled transaction values for
;continously compounded loans.
(define (gnc:pmtc rate nper pv fv type)
(gnc:pmt (- ($exp rate) 1) nper pv fv type))
(define (gnc:ipmtc rate per nper pv fv type)
(gnc:ipmt (- ($exp rate) 1) per nper pv fv type))
(define (gnc:ppmtc rate per nper pv fv type)
(gnc:ppmt (- ($exp rate) 1) per nper pv fv type))
I can use them quite easily in the scheduled transaction editor.
Jeremy Hankins <nowan at nowan.org>
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