50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
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/****************************Module*Header***********************************\
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* Module Name: INPUT.H
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*
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* Module Descripton:
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*
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* Warnings:
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*
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* Created:
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*
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* Author:
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\****************************************************************************/
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// the string must hold, at a minimun, enough digits for a quadword binary number (ie 64)
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#define MAX_STRLEN 64 // Seems to be the magic value for calc...
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#define C_NUM_MAX_DIGITS MAX_STRLEN
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#define C_EXP_MAX_DIGITS 4
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typedef struct
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{
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BOOL fEmpty; // TRUE if the number has no digits yet
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BOOL fNeg; // TRUE if number is negative
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INT cchVal; // number of characters in number (including dec. pnt)
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TCHAR szVal[MAX_STRLEN+1]; //
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} CALCNUMSEC, *PCALCNUMSEC;
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#if C_NUM_MAX_DIGITS > MAX_STRLEN || C_EXP_MAX_DIGITS > MAX_STRLEN
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# pragma error(CALCNUMSEC.szVal is too small)
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#endif
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typedef struct
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{
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BOOL fExp; // TRUE if number has exponent
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INT iDecPt; // index to decimal point of number portion. -1 if no dec pnt
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CALCNUMSEC cnsNum; // base number
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CALCNUMSEC cnsExp; // exponent if it exists
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} CALCINPUTOBJ, *PCALCINPUTOBJ;
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#define CIO_bDecimalPt(pcio) ((pcio)->iDecPt != -1)
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void CIO_vClear(PCALCINPUTOBJ pcio);
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BOOL CIO_bAddDigit(PCALCINPUTOBJ pcio, int iValue);
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void CIO_vToggleSign(PCALCINPUTOBJ pcio);
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BOOL CIO_bAddDecimalPt(PCALCINPUTOBJ pcio);
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BOOL CIO_bExponent(PCALCINPUTOBJ pcio);
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BOOL CIO_bBackspace(PCALCINPUTOBJ pcio);
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void CIO_vUpdateDecimalSymbol(PCALCINPUTOBJ pcio, TCHAR chLastDP);
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void CIO_vConvertToString(LPTSTR *ppszOut, PCALCINPUTOBJ pcio, int nRadix);
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void CIO_vConvertToNumObj(PHNUMOBJ phnoNum, PCALCINPUTOBJ pcio);
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