ba237a9d91
Files correlati : Ricompilazione Demo : [ ] Commento : Aggiunti i sorgenti per Greenleaf Math Library (gfm.dll) git-svn-id: svn://10.65.10.50/trunk@10079 c028cbd2-c16b-5b4b-a496-9718f37d4682
124 lines
3.1 KiB
C
Executable File
124 lines
3.1 KiB
C
Executable File
/* DEC **DepreciateDecliningTable(depr, remval, book, salv,dbf,life,partial);
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*
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* ARGUMENT
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* DEC **depr, **remval, *book, *salv, *dbf, *partial;
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* int life;
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*
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* DESCRIPTION
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* Calculate several years' depreciation and remaining depreciable
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* value according to declining balance depreciation.
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* With a declining balance factor of dbf, the item has book value
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* book, salvage value salv, and lifetime life (which may include a partial
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* period). At year# i, the depreciation and remaining value are
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* computed and stored in depr[i] and remval[i]. The first year is always
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* the partial year. The results are calculated for the entire lifetime.
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*
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* SIDE EFFECTS
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* depr and remval are changed.
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*
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* RETURNS
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* depr if successful, otherwise GM_NULLARR.
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*
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* POSSIBLE ERRORS
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* GM_NULLPOINTER
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* GM_ARGVAL
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*
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* AUTHOR
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* Jared Levy
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* Copyright (C) 1988-1990 Greenleaf Software Inc. All rights reserved.
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*
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* MODIFICATIONS
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*
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*
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*/
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#include <stdio.h>
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#include "gm.h"
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#include "gmsystem.h"
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DEC **DepreciateDecliningTable(depr, remval, book, salv,dbf,life, partial)
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DEC **depr, **remval, *book, *salv, *dbf, *partial;
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int life;
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{
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int i, plife;
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DEC drbv, *rbv=&drbv, dfol, *fol=&dfol;
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DEC dtemp, *temp=&dtemp, dnsalv, *nsalv=&dnsalv;
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_MacStart(GM_DPDBTBL);
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if (!depr||!remval||!book||!salv||!partial||!dbf) {
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_MacErr(GM_NULLPOINTER);
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_MacRet(GM_NULLARR);
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}
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if (_MacBad(salv)||_MacBad(partial)||_MacBad(dbf)) {
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_MacErr(GM_INIT);
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_MacRet(GM_NULLARR);
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}
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plife=life+(_MacIsDecZ(partial)?0:1);
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for (i=0;i<=plife;i++)
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if(!depr[i]||!remval[i]) {
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_MacErr(GM_NULLPOINTER);
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_MacRet(GM_NULLARR);
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}
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/* check life>=1, 0<=partial<=1 */
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if (life<1||_MacIsDecN(partial)||CompareDecimal(partial,&decOne)==1
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||_MacIsDecN(dbf)
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||_MacIsDecN(book)||_MacIsDecN(salv)) {
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_MacErr(GM_ARGVAL);
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_MacRet(GM_NULLARR);
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}
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(void) _ScaleDec80Bit(rbv, book, 2);
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(void) _ScaleDec80Bit(nsalv, salv, 2);
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(void) _SubDec80Bit(remval[0],rbv,nsalv);
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_MacDZero(depr[0]);
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(void) ConvLongToDecimal(temp, (long) life * 100L);
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(void) _DivDec80Bit(fol, dbf, temp);
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/* handle partial first year */
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if (_MacIsDecZ(partial)) {
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i=0;
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}
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else {
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(void) _MulDec80Bit(temp,rbv,fol);
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(void) _MulDec80Bit(depr[1], temp, partial);
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(void) _ScaleDec80Bit(depr[1],depr[1],2);
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(void) _SubDec80Bit(remval[1], remval[0], depr[1]);
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/* remaining value can't be negative */
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if (_MacIsDecN(remval[1])) {
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(void) _AddDec80Bit(depr[1], depr[1], remval[1]);
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_MacDZero(remval[1]);
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}
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(void) _SubDec80Bit(rbv,rbv,depr[1]);
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i=1;
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}
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/* handle remaining years */
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while (i<plife) {
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i++;
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(void) _MulDec80Bit(depr[i], rbv, fol);
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(void) _ScaleDec80Bit(depr[i],depr[i],2);
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(void) _SubDec80Bit(remval[i], remval[i-1], depr[i]);
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/* remaining value can't be negative */
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if (_MacIsDecN(remval[i])) {
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(void) _AddDec80Bit(depr[i], depr[i], remval[i]);
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_MacDZero(remval[i]);
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}
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(void) _SubDec80Bit(rbv,rbv,depr[i]);
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}
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/* remaining depreciable value after last year should be 0 */
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if (!_MacIsDecZ(remval[plife])) {
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(void) _AddDec80Bit(depr[plife],depr[plife],remval[plife]);
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_MacDZero(remval[plife]);
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}
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_MacRet(depr);
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}
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