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
107 lines
2.4 KiB
C
Executable File
107 lines
2.4 KiB
C
Executable File
/* DEC *DepreciateStraightLine(depr, remval, book, salv, life, partial, time)
|
|
*
|
|
* ARGUMENT
|
|
* DEC *depr, *remval, *book, *salv, *partial;
|
|
* int time, life;
|
|
*
|
|
* DESCRIPTION
|
|
* Calculate a particular year's depreciation and remaining depreciable
|
|
* value according to straight line depreciation. The item has book value
|
|
* book, salvage value salv, and lifetime life (which may include a partial
|
|
* period). At year# time, the depreciation and remaining value are
|
|
* computed and stored in depr and remval. The first year is always the
|
|
* partial year.
|
|
*
|
|
* SIDE EFFECTS
|
|
* depr and remval are changed.
|
|
*
|
|
* RETURNS
|
|
* depr if successful, otherwise GM_NULL.
|
|
*
|
|
* POSSIBLE ERRORS
|
|
* GM_NULLPOINTER
|
|
* GM_ARGVAL
|
|
*
|
|
* AUTHOR
|
|
* Jared Levy
|
|
* Copyright (C) 1988-1990 Greenleaf Software Inc. All rights reserved.
|
|
*
|
|
* MODIFICATIONS
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "gm.h"
|
|
#include "gmsystem.h"
|
|
|
|
DEC *DepreciateStraightLine(depr, remval, book, salv, life, partial, time)
|
|
DEC *depr, *remval, *book, *salv, *partial;
|
|
int time, life;
|
|
{
|
|
int i, plife;
|
|
DEC dtotlif, *totlif=&dtotlif;
|
|
DEC dydep, *ydep=&dydep;
|
|
|
|
_MacStart(GM_DPSL);
|
|
|
|
if (!depr||!remval||!book||!salv||!partial) {
|
|
_MacErr(GM_NULLPOINTER);
|
|
_MacRet(GM_NULL);
|
|
}
|
|
if (_MacBad(book)||_MacBad(salv)||_MacBad(partial)) {
|
|
_MacErr(GM_INIT);
|
|
_MacRet(GM_NULL);
|
|
}
|
|
|
|
plife = life + (_MacIsDecZ(partial)?0:1);
|
|
|
|
/* check time>=0, life>=1, time<=life, 0<=partial<=1 */
|
|
if (time<0||life<1||_MacIsDecN(book)||_MacIsDecN(salv)||time>plife
|
|
||_MacIsDecN(partial)||CompareDecimal(partial,&decOne)==1) {
|
|
_MacDZero(depr);
|
|
_MacDZero(remval);
|
|
_MacErr(GM_ARGVAL);
|
|
_MacRet(GM_NULL);
|
|
}
|
|
|
|
/* calculate yearly depreciation */
|
|
(void) _SubDec80Bit(remval,book,salv);
|
|
(void) _ScaleDec80Bit(remval, remval, 2);
|
|
(void) ConvLongToDecimal(totlif, (long) life);
|
|
(void) _DivRndDec80Bit(ydep, remval, totlif, 2);
|
|
|
|
_MacDZero(depr);
|
|
|
|
if (time==0)
|
|
_MacRet(depr);
|
|
|
|
/* handle partial first year */
|
|
if (_MacIsDecZ(partial)) {
|
|
i=0;
|
|
}
|
|
else {
|
|
(void) _MulDec80Bit(depr,ydep,partial);
|
|
(void) _ScaleDec80Bit(depr,depr,2);
|
|
(void) _SubDec80Bit(remval, remval, depr);
|
|
i=1;
|
|
}
|
|
|
|
/* handle remaining years */
|
|
if (time>i)
|
|
_MacDCopy(depr, ydep);
|
|
|
|
while (i<time) {
|
|
(void) _SubDec80Bit(remval, remval, ydep);
|
|
i++;
|
|
}
|
|
|
|
/* add balance to last depreciation period */
|
|
if (time==plife) {
|
|
_AddDec80Bit(depr, depr, remval);
|
|
_MacDZero(remval);
|
|
}
|
|
|
|
_MacRet(depr);
|
|
}
|