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- /* bcd.h
-
- BCD Number Library - Include File
- class bcd: declarations for decimal numbers.
-
- Copyright (c) Borland International 1987,1988,1990
- All Rights Reserved.
- */
-
- #ifndef __cplusplus
- #error Must use C++ for the type bcd.
- #endif
-
- #ifndef __BCD_H
- #define __BCD_H
-
- #include <math.h>
-
- #if __STDC__
- #define _Cdecl
- #else
- #define _Cdecl cdecl
- #endif
-
- #define _BcdMaxDecimals 5000
-
- class bcd {
-
- public:
- // constructors
- _Cdecl bcd();
- _Cdecl bcd(int x);
- _Cdecl bcd(unsigned int x);
- _Cdecl bcd(long x);
- _Cdecl bcd(unsigned long x);
- _Cdecl bcd(double x, int decimals = _BcdMaxDecimals);
- _Cdecl bcd(long double x, int decimals = _BcdMaxDecimals);
-
- // bcd manipulations
- friend long double _Cdecl real(bcd&); // Return the real part
-
- // Overloaded ANSI C math functions
- friend bcd _Cdecl abs(bcd&);
- friend bcd _Cdecl acos(bcd&);
- friend bcd _Cdecl asin(bcd&);
- friend bcd _Cdecl atan(bcd&);
- friend bcd _Cdecl cos(bcd&);
- friend bcd _Cdecl cosh(bcd&);
- friend bcd _Cdecl exp(bcd&);
- friend bcd _Cdecl log(bcd&);
- friend bcd _Cdecl log10(bcd&);
- friend bcd _Cdecl pow(bcd& base, bcd& expon);
- friend bcd _Cdecl sin(bcd&);
- friend bcd _Cdecl sinh(bcd&);
- friend bcd _Cdecl sqrt(bcd&);
- friend bcd _Cdecl tan(bcd&);
- friend bcd _Cdecl tanh(bcd&);
-
- // Binary Operator Functions
- friend bcd _Cdecl operator+(bcd&, bcd&);
- friend bcd _Cdecl operator+(long double, bcd&);
- friend bcd _Cdecl operator+(bcd&, long double);
- friend bcd _Cdecl operator-(bcd&, bcd&);
- friend bcd _Cdecl operator-(long double, bcd&);
- friend bcd _Cdecl operator-(bcd&, long double);
- friend bcd _Cdecl operator*(bcd&, bcd&);
- friend bcd _Cdecl operator*(bcd&, long double);
- friend bcd _Cdecl operator*(long double, bcd&);
- friend bcd _Cdecl operator/(bcd&, bcd&);
- friend bcd _Cdecl operator/(bcd&, long double);
- friend bcd _Cdecl operator/(long double, bcd&);
- friend int _Cdecl operator==(bcd&, bcd&);
- friend int _Cdecl operator!=(bcd&, bcd&);
- friend int _Cdecl operator>=(bcd&, bcd&);
- friend int _Cdecl operator<=(bcd&, bcd&);
- friend int _Cdecl operator>(bcd&, bcd&);
- friend int _Cdecl operator<(bcd&, bcd&);
- bcd& _Cdecl operator+=(bcd&);
- bcd& _Cdecl operator+=(long double);
- bcd& _Cdecl operator-=(bcd&);
- bcd& _Cdecl operator-=(long double);
- bcd& _Cdecl operator*=(bcd&);
- bcd& _Cdecl operator*=(long double);
- bcd& _Cdecl operator/=(bcd&);
- bcd& _Cdecl operator/=(long double);
- bcd _Cdecl operator+();
- bcd _Cdecl operator-();
-
- // Implementation
- private:
- long mantissa[2];
- int expo;
- };
-
- // const bcd bcd_zero(0);
-
- enum bcdexpo {
- ExpoZero,
- ExpoInf,
- ExpoNan,
- };
-
- extern "C" {
- long double pascal __bcd_tobinary(const bcd far *p);
- void pascal __bcd_todecimal(long double x, int decimals, bcd far *p);
- long double pascal __bcd_log10(bcd far *p);
- void pascal __bcd_pow10(int n, bcd far *p);
- }
-
- inline _Cdecl bcd::bcd()
- {
- /* if you want zero ...
- mantissa[0] = 0;
- mantissa[1] = 0;
- expo = ExpoZero;
- */
- }
-
- inline _Cdecl bcd::bcd(long double x, int decimals)
- {
- __bcd_todecimal(x,decimals,this);
- }
-
- inline _Cdecl bcd::bcd(double x, int decimals)
- {
- __bcd_todecimal(x,decimals,this);
- }
-
- inline _Cdecl bcd::bcd(int x)
- {
- mantissa[0] = x;
- mantissa[1] = 0;
- expo = 0;
- }
-
- inline _Cdecl bcd::bcd(unsigned int x)
- {
- mantissa[0] = x;
- mantissa[1] = 0;
- expo = 0;
- }
-
- inline _Cdecl bcd::bcd(long x)
- {
- mantissa[0] = x;
- mantissa[1] = x >= 0 ? 0 : -1;
- expo = 0;
- }
-
- inline _Cdecl bcd::bcd(unsigned long x)
- {
- mantissa[0] = x;
- mantissa[1] = 0;
- expo = 0;
- }
-
- inline long double _Cdecl real(bcd& z)
- {
- return __bcd_tobinary(&z);
- }
-
- // Definitions of compound-assignment operator member functions
-
- inline bcd& _Cdecl bcd::operator+=(bcd& b)
- {
- __bcd_todecimal(real(*this)+real(b),_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator+=(long double b)
- {
- __bcd_todecimal(real(*this)+b,_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator-=(bcd& b)
- {
- __bcd_todecimal(real(*this)-real(b),_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator-=(long double b)
- {
- __bcd_todecimal(real(*this)-b,_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator*=(bcd& b)
- {
- __bcd_todecimal(real(*this)*real(b),_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator*=(long double b)
- {
- __bcd_todecimal(real(*this)*b,_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator/=(bcd& b)
- {
- __bcd_todecimal(real(*this)/real(b),_BcdMaxDecimals,this);
- return *this;
- }
-
- inline bcd& _Cdecl bcd::operator/=(long double b)
- {
- __bcd_todecimal(real(*this)/b,_BcdMaxDecimals,this);
- return *this;
- }
-
-
- // Definitions of non-member binary operator functions
-
- inline bcd _Cdecl operator+(bcd& a, bcd& b)
- {
- return bcd(real(a) + real(b));
- }
-
- inline bcd _Cdecl operator+(long double a, bcd& b)
- {
- return bcd(a + real(b));
- }
-
- inline bcd _Cdecl operator+(bcd& a, long double b)
- {
- return bcd(real(a) + b);
- }
-
- inline bcd _Cdecl operator-(bcd& a, bcd& b)
- {
- return bcd(real(a) - real(b));
- }
-
- inline bcd _Cdecl operator-(long double a, bcd& b)
- {
- return bcd(a - real(b));
- }
-
- inline bcd _Cdecl operator-(bcd& a, long double b)
- {
- return bcd(real(a) - b);
- }
-
- inline bcd _Cdecl operator*(bcd& a, bcd& b)
- {
- return bcd(real(a) * real(b));
- }
-
- inline bcd _Cdecl operator*(bcd& a, long double b)
- {
- return bcd(real(a) * b);
- }
-
- inline bcd _Cdecl operator*(long double a, bcd& b)
- {
- return bcd(a * real(b));
- }
-
- inline bcd _Cdecl operator/(bcd& a, bcd& b)
- {
- return bcd(real(a) / real(b));
- }
-
- inline bcd _Cdecl operator/(long double a, bcd& b)
- {
- return bcd(a / real(b));
- }
-
- inline bcd _Cdecl operator/(bcd& a, long double b)
- {
- return bcd(real(a) / b);
- }
-
- inline int _Cdecl operator==(bcd& a, bcd& b)
- {
- return real(a) == real(b);
- }
-
- inline int _Cdecl operator!=(bcd& a, bcd& b)
- {
- return real(a) != real(b);
- }
-
- inline int _Cdecl operator>=(bcd& a, bcd& b)
- {
- return real(a) >= real(b);
- }
-
- inline int _Cdecl operator<=(bcd& a, bcd& b)
- {
- return real(a) <= real(b);
- }
-
- inline int _Cdecl operator>(bcd& a, bcd& b)
- {
- return real(a) > real(b);
- }
-
- inline int _Cdecl operator<(bcd& a, bcd& b)
- {
- return real(a) < real(b);
- }
-
- inline bcd _Cdecl bcd::operator+()
- {
- return *this;
- }
-
- inline bcd _Cdecl bcd::operator-()
- {
- // return bcd(-real(this));
-
- // 1's comp
- mantissa[0] = - ++ mantissa[0];
- mantissa[1] = - ++ mantissa[1];
- // inc
- if (++mantissa[0] == 0) ++mantissa[1];
- return *this;
- }
-
- inline bcd _Cdecl abs(bcd& a) { return bcd(fabs(real(a)));}
- inline bcd _Cdecl acos(bcd& a) { return bcd(acos(real(a)));}
- inline bcd _Cdecl asin(bcd& a) { return bcd(asin(real(a)));}
- inline bcd _Cdecl atan(bcd& a) { return bcd(atan(real(a)));}
- inline bcd _Cdecl cos(bcd& a) { return bcd(cos(real(a)));}
- inline bcd _Cdecl cosh(bcd& a) { return bcd(cosh(real(a)));}
- inline bcd _Cdecl exp(bcd& a) { return bcd(exp(real(a)));}
- inline bcd _Cdecl log(bcd& a) { return bcd(log(real(a)));}
- inline bcd _Cdecl log10(bcd& a) { return bcd(__bcd_log10(&a));}
- inline bcd _Cdecl sin(bcd& a) { return bcd(sin(real(a)));}
- inline bcd _Cdecl sinh(bcd& a) { return bcd(sinh(real(a)));}
- inline bcd _Cdecl sqrt(bcd& a) { return bcd(sqrt(real(a)));}
- inline bcd _Cdecl tan(bcd& a) { return bcd(tan(real(a)));}
- inline bcd _Cdecl tanh(bcd& a) { return bcd(tanh(real(a)));}
-
- inline bcd _Cdecl pow(bcd& a, bcd& b) { return bcd(pow(real(a),real(b)));}
- inline void _Cdecl pow10(int n, bcd& a) { __bcd_pow10(n,&a);}
-
-
- // bcd stream I/O
-
- #include <iostream.h>
-
- ostream& pascal operator<<(ostream&, bcd&);
- istream& pascal operator>>(istream&, bcd&);
-
- #endif
-