1b14ec9415
git-svn-id: svn://10.65.10.50/branches/R_10_00@23236 c028cbd2-c16b-5b4b-a496-9718f37d4682
60 lines
1.1 KiB
C
Executable File
60 lines
1.1 KiB
C
Executable File
/* DEC *PercentChange(pDst,pSrc1,pSrc2)
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*
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* ARGUMENT
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* DEC *pDst, *pSrc1, pSrc2;
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*
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* DESCRIPTION
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* Calculates the percent change between pSrc1 and pSrc2 as a percentage
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* of pSrc1, stroring the result in pDst.
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* pDst = ((pSrc2 - pSrc1) / pSrc1) * 100
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* pDst is calculated to maximum precision.
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*
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* SIDE EFFECTS
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* None.
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*
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* RETURNS
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* Returns a pointer to the dest structure unless overflow,
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* when it returns a GM_NULL.
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*
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* POSSIBLE ERROR CODES
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*
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* GM_NULLPOINTER
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* GM_NOMEMORY
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* GM_OVERFLOW
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* GM_UNDERFLOW
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* GM_DIV0
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*
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* AUTHOR
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* Jared Levy
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* Copyright (C) 1987-1990 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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#include <stdio.h>
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#include "gm.h"
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#include "gmsystem.h"
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DEC *PercentChange(pDst,pSrc1,pSrc2)
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DEC *pDst;
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DEC *pSrc1,*pSrc2;
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{
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DEC dtemp, *temp=&dtemp, ddiff, *diff=&ddiff;
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_MacStart(GM_PCHANGE);
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_MacInVarD(pSrc1);
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_MacInVarD(pSrc2);
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_SubDec80Bit(diff, pSrc2, pSrc1);
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_MacDCopy(temp, pSrc1);
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temp->dc.id += 2;
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pDst = DivideDecimal(pDst, diff, temp);
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_MacRet(pDst);
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/* error flag set by DivideDecimal */
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}
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