59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
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/* DEC *SubtractDoubleFromDecimal(pDst,pSrc1,l)
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*
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* ARGUMENT
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* pDst is a pointer to the destination DEC structure.
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* pSrc1 is a ptr to the source1 DEC structure.
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* l is the double to be subtract from pSrc1
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*
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* DESCRIPTION
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* Subtracts the value 'l' from pSrc1 and puts the result
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* in dest DEC structure.
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*
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* SIDE EFFECTS
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* On overflow, the dest value is destroyed.
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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. On error, the error
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* is in wGMError, unless an error was already there.
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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_CNVRE
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*
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* AUTHOR
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* Andy Anderson 08-JUL-1987 1500
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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 *SubtractDoubleFromDecimal(pDst,pSrc1,l)
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DEC *pDst,*pSrc1;
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double l;
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{
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DEC decS2, *pSrc2=&decS2, *pd;
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_MacStart(GM_SUBDFD);
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/* Convert the double to a DEC */
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pSrc2=ConvDoubleToDecimal(pSrc2,l);
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if (!pSrc2) {
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if (pDst)
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_MacDCopy(pDst, pSrc1);
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_MacRet(GM_NULL);
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}
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pd = SubtractDecimal(pDst,pSrc1,pSrc2);
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_MacRet(pd);
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}
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