mirror of
https://github.com/Gnucash/gnucash.git
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83d14e1c1c
It is split into - /libgnucash (for the non-gui bits) - /gnucash (for the gui) - /common (misc source files used by both) - /bindings (currently only holds python bindings) This is the first step in restructuring the code. It will need much more fine tuning later on.
98 lines
3.3 KiB
Scheme
98 lines
3.3 KiB
Scheme
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; gnc-numeric.scm : rational number representation for gnucash
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;; Copyright 2000 Bill Gribble <grib@gnumatic.com>
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;; Copyright 2001 Christian Stimming <stimming@tu-harburg.de>
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;;
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2 of
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;; the License, or (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; if not, contact:
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;;
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;; Free Software Foundation Voice: +1-617-542-5942
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;; 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
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;; Boston, MA 02110-1301, USA gnu@gnu.org
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; use 'logior' in guile to bit-combine RND and DENOM flags.
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(define GNC-RND-FLOOR 1)
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(define GNC-RND-CEIL 2)
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(define GNC-RND-TRUNC 3)
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(define GNC-RND-PROMOTE 4)
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(define GNC-RND-ROUND-HALF-DOWN 5)
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(define GNC-RND-ROUND-HALF-UP 6)
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(define GNC-RND-ROUND 7)
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(define GNC-RND-NEVER 8)
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(define GNC-DENOM-AUTO 0)
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(define GNC-DENOM-REDUCE 32)
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(define GNC-DENOM-FIXED 64)
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(define GNC-DENOM-LCD 48)
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(define GNC-DENOM-SIGFIG 80)
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(define (GNC-DENOM-SIGFIGS n)
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(logior GNC-DENOM-SIGFIG (* n 256)))
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(define GNC-ERROR-OK 0)
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(define GNC-ERROR-ARG -1)
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(define GNC-ERROR-OVERFLOW -2)
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(define GNC-ERROR-DENOM-DIFF -3)
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(define GNC-ERROR-REMAINDER -4)
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(define <gnc-numeric>
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(make-record-type "<gnc-numeric>"
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'(num denom)))
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(define gnc:make-gnc-numeric
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(record-constructor <gnc-numeric>))
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(define gnc:gnc-numeric?
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(record-predicate <gnc-numeric>))
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(define gnc:gnc-numeric-num
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(record-accessor <gnc-numeric> 'num))
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(define gnc:gnc-numeric-denom
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(record-accessor <gnc-numeric> 'denom))
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(define (gnc:gnc-numeric-denom-reciprocal arg)
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(- arg))
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(define <gnc-monetary>
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(make-record-type "<gnc-monetary>"
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'(commodity amount)))
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;; Constructor; takes one <gnc:commodity*> and one <gnc-numeric>
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(define (gnc:make-gnc-monetary c a)
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;;FIXME: we used to type-check the values, like:
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;; (gw:wcp-is-of-type? <gnc:commodity*> c)
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(if (and #t (gnc:gnc-numeric? a))
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((record-constructor <gnc-monetary>) c a)
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(warn "wrong arguments for gnc:make-gnc-monetary: " c a)))
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(define gnc:gnc-monetary?
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(record-predicate <gnc-monetary>))
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(define gnc:gnc-monetary-commodity
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(record-accessor <gnc-monetary> 'commodity))
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(define gnc:gnc-monetary-amount
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(record-accessor <gnc-monetary> 'amount))
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(define (gnc:monetary-neg a)
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(if (gnc:gnc-monetary? a)
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(gnc:make-gnc-monetary
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(gnc:gnc-monetary-commodity a)
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(gnc-numeric-neg (gnc:gnc-monetary-amount a)))
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(warn "wrong arguments for gnc:monetary-neg: " a)))
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