674 lines
16 KiB
C
674 lines
16 KiB
C
/*
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* stack.c
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*
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* This file is part of Emu48
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*
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* Copyright (C) 2005 Christoph Gießelink
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*
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*/
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#include "pch.h"
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#include "resource.h"
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#include "Emu48.h"
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#include "io.h"
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#define fnRadix 51 // fraction mark
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#define fnApprox 105 // exact / approx. mode (HP49G)
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#define DOINT 0x02614 // Precision Integer (HP49G)
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#define DOREAL 0x02933 // Real
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#define DOCSTR 0x02A2C // String
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//################
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//#
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//# Low level subroutines
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//#
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//################
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static INT RPL_GetZInt(BYTE CONST *pbyNum,INT nIntLen,LPTSTR cp,INT nSize)
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{
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INT i = 0; // character counter
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_ASSERT(nSize > 0); // target buffer size
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if (nIntLen > 1) // has sign nibble
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{
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--nIntLen; // remove sign from digit length
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// check for valid sign
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_ASSERT(pbyNum[nIntLen] == 0 || pbyNum[nIntLen] == 9);
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if (pbyNum[nIntLen] == 9) // negative number
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{
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*cp++ = _T('-'); // add sign
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--nSize; // dec dest buffer size
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++i; // wrote one character
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}
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}
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if (nIntLen >= nSize) return 0; // dest buffer overflow
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i += nIntLen; // adjust character counter
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while (nIntLen-- > 0) // write all digits
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{
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// check for valid digit
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_ASSERT(pbyNum[nIntLen] >= 0 && pbyNum[nIntLen] <= 9);
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*cp++ = _T('0') + pbyNum[nIntLen]; // and write
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}
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*cp = 0; // set EOS
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return i;
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}
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static INT RPL_SetZInt(LPCTSTR cp,LPBYTE pbyNum,INT nSize)
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{
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BYTE bySign;
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INT nStrLen,nNumSize;
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_ASSERT(nSize > 0); // target buffer size
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nStrLen = lstrlen(cp); // source string length
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if ( nStrLen == 0 // empty string
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// precisition integer contain only these numbers
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|| _tcsspn(cp,_T("0123456789+-")) != (SIZE_T) nStrLen)
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return 0;
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bySign = (*cp != _T('-')) ? 0 : 9; // set sign nibble
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if (*cp == _T('-') || *cp == _T('+')) // skip sign character
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{
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++cp;
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--nStrLen;
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}
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if (nStrLen == 1 && *cp == _T('0')) // special code for zero
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{
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*pbyNum = 0; // zero data
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return 1; // finish
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}
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// nStrLen = no. of digits without sign
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if (nStrLen >= nSize) // destination buffer too small
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return 0;
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nNumSize = nStrLen + 1; // no. of written data
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while (--nStrLen >= 0) // eval all digits
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{
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TCHAR c = cp[nStrLen];
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// only '0' .. '9' are valid here
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if (!((c >= _T('0')) || (c <= _T('9'))))
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return 0;
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c -= _T('0');
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*pbyNum++ = (BYTE) c;
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}
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*pbyNum = bySign; // add sign
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return nNumSize;
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}
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static INT RPL_GetBcd(BYTE CONST *pbyNum,INT nMantLen,INT nExpLen,CONST TCHAR cDec,LPTSTR cp,INT nSize)
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{
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BYTE byNib;
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LONG v,lExp;
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BOOL bPflag,bExpflag;
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INT i;
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lExp = 0;
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for (v = 1; nExpLen--; v *= 10) // fetch exponent
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{
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lExp += (LONG) *pbyNum++ * v; // calc. exponent
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}
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if (lExp > v / 2) lExp -= v; // negative exponent
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lExp -= nMantLen - 1; // set decimal point to end of mantissa
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i = 0; // first character
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bPflag = FALSE; // show no decimal point
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// scan mantissa
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for (v = (LONG) nMantLen - 1; v >= 0 || bPflag; v--)
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{
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if (v >= 0L) // still mantissa digits left
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byNib = *pbyNum++;
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else
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byNib = 0; // zero for negativ exponent
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if (!i) // still delete zeros at end
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{
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if (byNib == 0 && lExp && v > 0) // delete zeros
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{
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lExp++; // adjust exponent
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continue;
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}
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// TRUE at x.E
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bExpflag = v + lExp > 14 || v + lExp < -nMantLen;
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bPflag = !bExpflag && v < -lExp; // decimal point flag at neg. exponent
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}
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// set decimal point
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if ((bExpflag && v == 0) || (!lExp && i))
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{
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if (i >= nSize) return 0; // dest buffer overflow
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cp[i++] = cDec; // write decimal point
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if (v < 0) // no mantissa digits any more
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{
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if (i >= nSize) return 0; // dest buffer overflow
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cp[i++] = _T('0'); // write heading zero
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}
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bPflag = FALSE; // finished with negativ exponents
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}
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if (v >= 0 || bPflag)
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{
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if (i >= nSize) return 0; // dest buffer overflow
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cp[i++] = (TCHAR) byNib + _T('0'); // write character
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}
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lExp++; // next position
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}
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if (*pbyNum == 9) // negative number
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{
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if (i >= nSize) return 0; // dest buffer overflow
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cp[i++] = _T('-'); // write sign
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}
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if (i >= nSize) return 0; // dest buffer overflow
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cp[i] = 0; // set EOS
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for (v = 0; v < (i / 2); v++) // reverse string
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{
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TCHAR cNib = cp[v]; // swap chars
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cp[v] = cp[i-v-1];
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cp[i-v-1] = cNib;
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}
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// write number with exponent
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if (bExpflag)
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{
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if (i + 5 >= nSize) return 0; // dest buffer overflow
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i += wsprintf(&cp[i],_T("E%d"),lExp-1);
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}
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return i;
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}
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static INT RPL_SetBcd(LPCTSTR cp,INT nMantLen,INT nExpLen,CONST TCHAR cDec,LPBYTE pbyNum,INT nSize)
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{
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TCHAR cVc[] = _T(".0123456789eE+-");
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BYTE byNum[80];
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INT i,nIp,nDp,nMaxExp;
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LONG lExp;
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cVc[0] = cDec; // replace decimal char
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if ( nMantLen + nExpLen >= nSize // destination buffer too small
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|| !*cp // empty string
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|| _tcsspn(cp,cVc) != (SIZE_T) lstrlen(cp) // real contain only these numbers
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|| lstrlen(cp) >= ARRAYSIZEOF(byNum)) // ignore too long reals
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return 0;
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byNum[0] = (*cp != _T('-')) ? 0 : 9; // set sign nibble
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if (*cp == _T('-') || *cp == _T('+')) // skip sign character
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cp++;
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// only '.', '0' .. '9' are valid here
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if (!((*cp == cDec) || (*cp >= _T('0')) || (*cp <= _T('9'))))
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return 0;
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nIp = 0; // length of integer part
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if (*cp != cDec) // no decimal point
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{
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// count integer part
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while (*cp >= _T('0') && *cp <= _T('9'))
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byNum[++nIp] = *cp++ - _T('0');
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if (!nIp) return 0;
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}
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// only '.', 'E', 'e' or end are valid here
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if (!(!*cp || (*cp == cDec) || (*cp == _T('E')) || (*cp == _T('e'))))
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return 0;
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nDp = 0; // length of decimal part
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if (*cp == cDec) // decimal point
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{
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cp++; // skip '.'
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// count decimal part
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while (*cp >= _T('0') && *cp <= _T('9'))
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byNum[nIp + ++nDp] = *cp++ - _T('0');
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}
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// count number of heading zeros in mantissa
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for (i = 0; byNum[i+1] == 0 && i + 1 < nIp + nDp; ++i) { }
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if (i > 0) // have to normalize
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{
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INT j;
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nIp -= i; // for later ajust of exponent
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for (j = 1; j <= nIp + nDp; ++j) // normalize mantissa
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byNum[j] = byNum[j + i];
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}
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if(byNum[1] == 0) // number is 0
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{
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ZeroMemory(pbyNum,nMantLen + nExpLen + 1);
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return nMantLen + nExpLen + 1;
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}
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for (i = nIp + nDp; i < nMantLen;) // fill rest of mantissa with 0
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byNum[++i] = 0;
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// must be 'E', 'e' or end
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if (!(!*cp || (*cp == _T('E')) || (*cp == _T('e'))))
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return 0;
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lExp = 0;
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if (*cp == _T('E') || *cp == _T('e'))
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{
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cp++; // skip 'E'
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i = FALSE; // positive exponent
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if (*cp == _T('-') || *cp == _T('+'))
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{
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i = (*cp++ == _T('-')); // adjust exponent sign
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}
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// exponent symbol must be followed by number
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if (*cp < _T('0') || *cp > _T('9')) return 0;
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while (*cp >= _T('0') && *cp <= _T('9'))
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lExp = lExp * 10 + *cp++ - _T('0');
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if(i) lExp = -lExp;
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}
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if (*cp != 0) return 0;
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// adjust exponent value with exponent from normalized mantissa
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lExp += nIp - 1;
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// calculate max. posive exponent
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for (nMaxExp = 5, i = 1; i < nExpLen; ++i)
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nMaxExp *= 10;
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// check range of exponent
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if ((lExp < 0 && -lExp >= nMaxExp) || (lExp >= nMaxExp))
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return 0;
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if (lExp < 0) lExp += 2 * nMaxExp; // adjust negative offset
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for (i = nExpLen; i > 0; --i) // convert number into digits
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{
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byNum[nMantLen + i] = (BYTE) (lExp % 10);
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lExp /= 10;
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}
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// copy to target in reversed order
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for (i = nMantLen + nExpLen; i >= 0; --i)
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*pbyNum++ = byNum[i];
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return nMantLen + nExpLen + 1;
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}
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//################
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//#
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//# Object subroutines
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//#
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//################
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#if 0
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static INT IsRealNumber(LPCTSTR cp,INT nMantLen,INT nExpLen,CONST TCHAR cDec,LPBYTE pbyNum,INT nSize)
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{
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LPTSTR lpszNumber;
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INT nLength = 0;
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if ((lpszNumber = DuplicateString(cp)) != NULL)
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{
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LPTSTR p = lpszNumber;
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INT i;
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// cut heading whitespaces
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for (; *p == _T(' ') || *p == _T('\t'); ++p) { }
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// cut tailing whitespaces
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for (i = lstrlen(p); --i >= 0;)
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{
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if (p[i] != _T(' ') && p[i] != _T('\t'))
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break;
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}
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p[++i] = 0; // new EOS
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nLength = RPL_SetBcd(p,nMantLen,nExpLen,cDec,pbyNum,nSize);
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HeapFree(hHeap,0,lpszNumber);
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}
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return nLength;
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}
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#endif
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static TCHAR GetRadix(VOID)
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{
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// get locale decimal point
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// GetLocaleInfo(LOCALE_USER_DEFAULT,LOCALE_SDECIMAL,&cDecimal,1);
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return RPL_GetSystemFlag(fnRadix) ? _T(',') : _T('.');
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}
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static INT DoInt(DWORD dwAddress,LPTSTR cp,INT nSize)
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{
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LPBYTE lpbyData;
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INT nLength,nIntLen;
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nIntLen = Read5(dwAddress) - 5; // no. of digits
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if (nIntLen <= 0) return 0; // error in calculator object
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nLength = 0;
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if ((lpbyData = HeapAlloc(hHeap,0,nIntLen)))
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{
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// get precisition integer object content and decode it
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Npeek(lpbyData,dwAddress+5,nIntLen);
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nLength = RPL_GetZInt(lpbyData,nIntLen,cp,nSize);
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HeapFree(hHeap,0,lpbyData);
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}
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return nLength;
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}
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static INT DoReal(DWORD dwAddress,LPTSTR cp,INT nSize)
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{
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BYTE byNumber[16];
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// get real object content and decode it
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Npeek(byNumber,dwAddress,ARRAYSIZEOF(byNumber));
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return RPL_GetBcd(byNumber,12,3,GetRadix(),cp,nSize);
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}
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//################
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//#
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//# Stack routines
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//#
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//################
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//
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// ID_STACK_COPY
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//
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LRESULT OnStackCopy(VOID) // copy data from stack
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{
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TCHAR cBuffer[128];
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HANDLE hClipObj;
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LPBYTE lpbyData;
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DWORD dwAddress,dwObject,dwSize;
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UINT uClipboardFormat;
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_ASSERT(nState == SM_RUN); // emulator must be in RUN state
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if (WaitForSleepState()) // wait for cpu SHUTDN then sleep state
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{
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InfoMessage(_T("The emulator is busy."));
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return 0;
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}
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_ASSERT(nState == SM_SLEEP);
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if ((dwAddress = RPL_Pick(1)) == 0) // pick address of level1 object
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{
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MessageBeep(MB_OK); // error beep
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goto error;
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}
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switch (dwObject = Read5(dwAddress)) // select object
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{
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case DOINT: // Precision Integer (HP49G)
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case DOREAL: // real object
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dwAddress += 5; // object content
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switch (dwObject)
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{
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case DOINT: // Precision Integer (HP49G)
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// get precision integer object content and decode it
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dwSize = DoInt(dwAddress,cBuffer,ARRAYSIZEOF(cBuffer));
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break;
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case DOREAL: // real object
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// get real object content and decode it
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dwSize = DoReal(dwAddress,cBuffer,ARRAYSIZEOF(cBuffer));
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break;
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}
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// calculate buffer size
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dwSize = (dwSize + 1) * sizeof(*cBuffer);
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// memory allocation for clipboard data
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if ((hClipObj = GlobalAlloc(GMEM_MOVEABLE,dwSize)) == NULL)
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goto error;
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if ((lpbyData = GlobalLock(hClipObj)))
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{
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// copy data to memory
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CopyMemory(lpbyData,cBuffer,dwSize);
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GlobalUnlock(hClipObj); // unlock memory
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}
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#if defined _UNICODE
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uClipboardFormat = CF_UNICODETEXT;
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#else
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uClipboardFormat = CF_TEXT;
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#endif
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break;
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case DOCSTR: // string
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dwAddress += 5; // address of string length
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dwSize = (Read5(dwAddress) - 5) / 2; // length of string
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// memory allocation for clipboard data
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if ((hClipObj = GlobalAlloc(GMEM_MOVEABLE,dwSize + 1)) == NULL)
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goto error;
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if ((lpbyData = GlobalLock(hClipObj))) // lock memory
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{
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// copy data into clipboard buffer
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for (dwAddress += 5;dwSize-- > 0;dwAddress += 2,++lpbyData)
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*lpbyData = Read2(dwAddress);
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*lpbyData = 0; // set EOS
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GlobalUnlock(hClipObj); // unlock memory
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uClipboardFormat = CF_TEXT; // always text
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}
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break;
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default:
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MessageBeep(MB_OK); // error beep
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goto error;
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}
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if (OpenClipboard(hWnd))
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{
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if (EmptyClipboard())
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SetClipboardData(uClipboardFormat,hClipObj);
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else
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GlobalFree(hClipObj);
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CloseClipboard();
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}
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else // clipboard open failed
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{
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GlobalFree(hClipObj);
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}
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error:
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SwitchToState(SM_RUN);
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return 0;
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}
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//
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// ID_STACK_PASTE
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//
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LRESULT OnStackPaste(VOID) // paste data to stack
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{
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#if defined _UNICODE
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#define CF_TEXTFORMAT CF_UNICODETEXT
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#else
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#define CF_TEXTFORMAT CF_TEXT
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#endif
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HANDLE hClipObj;
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BOOL bSuccess = FALSE;
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// check if clipboard format is available
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if (!IsClipboardFormatAvailable(CF_TEXTFORMAT))
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{
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MessageBeep(MB_OK); // error beep
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return 0;
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}
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SuspendDebugger(); // suspend debugger
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bDbgAutoStateCtrl = FALSE; // disable automatic debugger state control
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// calculator off, turn on
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if (!(Chipset.IORam[BITOFFSET]&DON))
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{
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KeyboardEvent(TRUE,0,0x8000);
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KeyboardEvent(FALSE,0,0x8000);
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// wait for sleep mode
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while(Chipset.Shutdn == FALSE) Sleep(0);
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}
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_ASSERT(nState == SM_RUN); // emulator must be in RUN state
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if (WaitForSleepState()) // wait for cpu SHUTDN then sleep state
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{
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InfoMessage(_T("The emulator is busy."));
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goto cancel;
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}
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_ASSERT(nState == SM_SLEEP);
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if (OpenClipboard(hWnd))
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{
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if ((hClipObj = GetClipboardData(CF_TEXTFORMAT)))
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{
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LPCTSTR lpstrClipdata;
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LPBYTE lpbyData;
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if ((lpstrClipdata = GlobalLock(hClipObj)))
|
|
{
|
|
BYTE byNumber[128];
|
|
DWORD dwAddress;
|
|
INT s;
|
|
|
|
do
|
|
{
|
|
// HP49G or HP49G+ in exact mode
|
|
if ( (cCurrentRomType == 'X' || cCurrentRomType == 'Q')
|
|
&& !RPL_GetSystemFlag(fnApprox))
|
|
{
|
|
// try to convert string to HP49 precision integer
|
|
s = RPL_SetZInt(lpstrClipdata,byNumber,sizeof(byNumber));
|
|
|
|
if (s > 0) // is a real number for exact mode
|
|
{
|
|
// get TEMPOB memory for HP49 precision integer object
|
|
dwAddress = RPL_CreateTemp(s+5+5);
|
|
if ((bSuccess = (dwAddress > 0)))
|
|
{
|
|
Write5(dwAddress,DOINT); // prolog
|
|
Write5(dwAddress+5,s+5); // size
|
|
Nwrite(byNumber,dwAddress+10,s); // data
|
|
|
|
// push object to stack
|
|
RPL_Push(1,dwAddress);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// try to convert string to real format
|
|
s = RPL_SetBcd(lpstrClipdata,12,3,GetRadix(),byNumber,sizeof(byNumber));
|
|
|
|
if (s > 0) // is a real number
|
|
{
|
|
// get TEMPOB memory for real object
|
|
dwAddress = RPL_CreateTemp(16+5);
|
|
if ((bSuccess = (dwAddress > 0)))
|
|
{
|
|
Write5(dwAddress,DOREAL); // prolog
|
|
Nwrite(byNumber,dwAddress+5,s); // data
|
|
|
|
// push object to stack
|
|
RPL_Push(1,dwAddress);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// any other format
|
|
{
|
|
DWORD dwSize = lstrlen(lpstrClipdata);
|
|
if ((lpbyData = HeapAlloc(hHeap,0,dwSize * 2)))
|
|
{
|
|
LPBYTE lpbySrc,lpbyDest;
|
|
DWORD dwLoop;
|
|
|
|
#if defined _UNICODE
|
|
// copy data UNICODE -> ASCII
|
|
WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK,
|
|
lpstrClipdata, dwSize,
|
|
lpbyData+dwSize, dwSize, NULL, NULL);
|
|
#else
|
|
// copy data
|
|
memcpy(lpbyData+dwSize,lpstrClipdata,dwSize);
|
|
#endif
|
|
|
|
// unpack data
|
|
lpbySrc = lpbyData+dwSize;
|
|
lpbyDest = lpbyData;
|
|
dwLoop = dwSize;
|
|
while (dwLoop-- > 0)
|
|
{
|
|
BYTE byTwoNibs = *lpbySrc++;
|
|
*lpbyDest++ = (BYTE) (byTwoNibs & 0xF);
|
|
*lpbyDest++ = (BYTE) (byTwoNibs >> 4);
|
|
}
|
|
|
|
dwSize *= 2; // size in nibbles
|
|
|
|
// get TEMPOB memory for string object
|
|
dwAddress = RPL_CreateTemp(dwSize+10);
|
|
if ((bSuccess = (dwAddress > 0)))
|
|
{
|
|
Write5(dwAddress,DOCSTR); // String
|
|
Write5(dwAddress+5,dwSize+5); // length of String
|
|
Nwrite(lpbyData,dwAddress+10,dwSize); // data
|
|
|
|
// push object to stack
|
|
RPL_Push(1,dwAddress);
|
|
}
|
|
HeapFree(hHeap,0,lpbyData);
|
|
}
|
|
}
|
|
}
|
|
while(FALSE);
|
|
|
|
GlobalUnlock(hClipObj);
|
|
}
|
|
}
|
|
CloseClipboard();
|
|
}
|
|
|
|
SwitchToState(SM_RUN); // run state
|
|
while (nState!=nNextState) Sleep(0);
|
|
_ASSERT(nState == SM_RUN);
|
|
|
|
if (bSuccess == FALSE) // data not copied
|
|
goto cancel;
|
|
|
|
KeyboardEvent(TRUE,0,0x8000);
|
|
KeyboardEvent(FALSE,0,0x8000);
|
|
|
|
// wait for sleep mode
|
|
while(Chipset.Shutdn == FALSE) Sleep(0);
|
|
|
|
cancel:
|
|
bDbgAutoStateCtrl = TRUE; // enable automatic debugger state control
|
|
ResumeDebugger();
|
|
return 0;
|
|
#undef CF_TEXTFORMAT
|
|
}
|