campo-sirio/gfm/ddiv.c

61 lines
1.2 KiB
C
Raw Normal View History

/* DEC *DivideDecimal(pDst,pSrc1,pSrc2);
*
* ARGUMENT
* DEC *pDst;
* DEC *pSrc1,pSrc2;
*
* DESCRIPTION
* Divides pSrc1 by pSrc2, storing the result in pDst. The quotient is
* calculated to as much accuracy as posssible, subject to the constraint
* that its implied decimal must lie between MINID and MAXID.
*
* SIDE EFFECTS
* pDst is indeterminate on underflow or overflow.
* GM_OVERFLOW: quotient too large.
* GM_UNDERFLOW: pSrc1 != 0, pSrc2 != 0, pDst = 0.
*
* RETURNS
* Returns pointer to pDst if successful, otherwise a GM_NULL. The
* type error (GM_OVERFLOW, GM_UNDERFLOW, GM_NOMEMORY) is in wGMError
* if wGMError doesn't contain a previous error.
*
* POSSIBLE ERROR CODES
*
* GM_NULLPOINTER
* GM_OVERFLOW
* GM_UNDERFLOW
* GM_DIV0
*
* AUTHOR
* Jared Levy 05-JAN-1987 17:30
* Copyright (C) 1987-1990 Greenleaf Software Inc. All rights reserved.
*
* MODIFICATIONS
*
*/
#include <stdio.h>
#include "gmsystem.h"
DEC *DivideDecimal(pDst,pSrc1,pSrc2)
DEC *pDst;
DEC *pSrc1,*pSrc2;
{
int i;
_MacStart(GM_DDIV);
_MacInVarD(pSrc1);
_MacInVarD(pSrc2);
_MacOutVarD(pDst);
i = _DivDecFast(pDst, pSrc1, pSrc2);
if (i != GM_SUCCESS) {
_MacErr(i);
_MacRet(GM_NULL);
}
_MacRet(pDst);
}