72 lines
1.1 KiB
ObjectPascal
72 lines
1.1 KiB
ObjectPascal
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unit ucomplex;
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interface
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type complex = object
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r: extended;
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i: extended;
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function length(): extended;
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function squared(): complex;
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function mult(a: complex): complex;
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function power(n: integer): complex;
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procedure update(re: extended; im: extended);
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end;
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function complex_sum(a: complex; b: complex): complex;
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implementation
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procedure complex.update(re: extended; im: extended);
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begin
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r := re;
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i := im;
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end;
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function complex.length(): extended;
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begin
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length := sqrt(r * r + i * i);
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end;
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function complex.squared(): complex;
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var
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res: complex;
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begin
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res.r := sqr(r) - sqr(i);
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res.i := 2 * r * i;
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squared := res;
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end;
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function complex.mult(a: complex): complex;
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var
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res: complex;
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begin
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res.r := r * a.r - i * a.i;
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res.i := r * a.i + i * a.r;
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mult := res;
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end;
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function complex.power(n: integer): complex;
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var
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j: integer;
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c, res: complex;
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begin
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c.update(r, i);
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res.update(r, i);
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for j := 1 to n - 1 do begin
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res := res.mult(c);
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end;
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power := res;
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end;
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function complex_sum(a: complex; b: complex): complex;
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var
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res: complex;
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begin
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res.r := a.r + b.r;
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res.i := a.i + b.i;
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complex_sum := res;
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end;
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begin
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end.
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