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
87 lines
1.4 KiB
C
Executable File
87 lines
1.4 KiB
C
Executable File
/*int _DivProcTrn(c,a,b,ida,idb,nid)
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*
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* ARGUMENT
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* DEC *c;
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* unsigned a[], b[];
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* int ida,idb,nid;
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*
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* DESCRIPTION
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* This routine divides one positive DEC structure by another, setting
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* dst = src1 / src2.
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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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* GM_SUCCESS or error code.
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*
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* ALGORITHM
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* a = an * 10^-ad
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* b = bn * 10^-bd
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* c = a / b
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* c = (10^p * an / bn) * 10^[-(ad - bd + p)]
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* cn = 10^p * an / bn, cd = ad - bd + p
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*
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* AUTHOR
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* Jared Levy 05-JAN-1987 17:30
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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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int _DivProcTrn(c,a,b,ida,idb,nid)
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DEC *c;
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unsigned SHORT a[], b[];
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int ida,idb,nid;
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{
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int i, p;
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unsigned SHORT *cn, ad[5];
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/* sets c = a / b,
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where a and b are positive DEC numbers, and the result is stored in c */
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cn = c->dc.sl;
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p = nid - (ida - idb);
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a[5] = 0;
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a[6] = 0;
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a[7] = 0;
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a[8] = 0;
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a[9] = 0;
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a[10]= 0;
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a[11]= 0;
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if (p<0)
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_DivUnsArrByPwrOf10Trunc(a,5,-p);
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if (p>0) {
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i = _MulUnsArrByPwrOf10(a,p,10);
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/* check for overflow */
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ad[0]=a[5];
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ad[1]=a[6];
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ad[2]=a[7];
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ad[3]=a[8];
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ad[4]=a[9];
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_DoubleUnsArr(ad, 5);
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if (a[4]&0x8000)
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ad[0]=ad[0]+1;
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if (!((i == GM_SUCCESS) &&
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(_CompareUnsArr(ad,b,5) == -1)))
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return(GM_OVERFLOW);
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}
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_DivUns10ArrByUns5ArrTrn(cn, a, b);
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c->dc.id = nid;
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return(GM_SUCCESS);
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}
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