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Annotation of researchv9/cmd/cfront/CC/complex.h, revision 1.1

1.1     ! root        1: 
        !             2: #include <stream.h>
        !             3: #include <errno.h>
        !             4: 
        !             5: overload cos;
        !             6: overload cosh;
        !             7: overload exp;
        !             8: overload log;
        !             9: overload pow;
        !            10: overload sin;
        !            11: overload sinh;
        !            12: overload sqrt;
        !            13: overload abs;
        !            14: 
        !            15: #include <math.h>
        !            16: inline double abs(double d) { return fabs(d); }
        !            17: 
        !            18: class complex {
        !            19:        double  re, im;
        !            20: public:
        !            21:        complex(double r, double i)     { re=r; im=i; }
        !            22:        complex(double r)               { re=r; im=0; }
        !            23:        complex()                       { re=0; im=0; }
        !            24:                
        !            25:        friend  double  real(const complex& a ) { return a.re; }
        !            26:        friend  double  imag(const complex& a ) { return a.im; }
        !            27: 
        !            28:        friend  double  abs(complex);
        !            29:        friend  double  norm(complex);
        !            30:        friend  double  arg(complex);
        !            31:        friend  complex conj(complex a) { return complex(a.re, -a.im); }
        !            32:        friend  complex cos(complex);
        !            33:        friend  complex cosh(complex);
        !            34:        friend  complex exp(complex);
        !            35:        friend  complex log(complex);
        !            36:        friend  complex pow(double, complex);
        !            37:        friend  complex pow(complex, int);
        !            38:        friend  complex pow(complex, double);
        !            39:        friend  complex pow(complex, complex);
        !            40:        friend  complex polar(double, double = 0);
        !            41:        friend  complex sin(complex);
        !            42:        friend  complex sinh(complex);
        !            43:        friend  complex sqrt(complex);
        !            44: 
        !            45:        friend complex  operator+(complex a1, complex a2)
        !            46:        {
        !            47:                return complex(a1.re+a2.re, a1.im+a2.im);
        !            48:        }
        !            49:        friend complex  operator-(complex a1, complex a2)
        !            50:        {
        !            51:                return complex(a1.re-a2.re, a1.im-a2.im);
        !            52:        }
        !            53:        friend complex  operator-(complex a) { return complex(-a.re, -a.im); }
        !            54:        friend complex  operator*(complex, complex);
        !            55:        friend complex  operator/(complex, complex);
        !            56:        friend int      operator==(complex a, complex b)
        !            57:        {
        !            58:                return a.re==b.re && a.im==b.im;
        !            59:        }
        !            60:        friend int      operator!=(complex a, complex b)
        !            61:        {
        !            62:                return a.re!=b.re || a.im!=b.im;
        !            63:        }
        !            64:        friend int      operator==(complex, complex);
        !            65:        friend int      operator!=(complex, complex);
        !            66:        
        !            67:        void operator+=(complex a) { re += a.re; im += a.im; }
        !            68:        void operator-=(complex a) { re -= a.re; im -= a.im; }
        !            69:        void operator*=(complex);
        !            70:        void operator/=(complex);
        !            71: };
        !            72: 
        !            73: ostream& operator<<(ostream&, complex);
        !            74: istream& operator>>(istream&, complex&);
        !            75: 
        !            76: void complex_error(int,double);
        !            77: extern int errno;
        !            78: 

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