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function Im (z: Complex): Real;
Im extracts the imaginary part of the complex number z.
The result is a real value.
Im is an ISO 10206 Extended Pascal extension.
program ImDemo;
var
z: Complex;
begin
z := Cmplx (1, 2); { 1 + i * 2 }
WriteLn (Im (z) : 0 : 5) { 2.00000 }
end.