complex<float> template specialization — Single-precision complex number
template<> class complex<float> { public: typedef float value_type; complex(float re = 0.0f, float im = 0.0f); explicit complex(const complex<double>&); explicit complex(const complex<long double>&); float real( ) const; float imag( ) const; complex<float>& operator= (float); complex<float>& operator+=(float); complex<float>& operator-=(float); complex<float>& operator*=(float); complex<float>& operator/=(float); complex<float>& operator=(const complex<float>&); template<typename X> complex<float>& operator= (const complex<X>&); template<typename X> complex<float>& operator+=(const complex<X>&); template<typename X> complex<float>& operator-=(const complex<X>&); template<typename X> complex<float>& operator*=(const complex<X>&); template<typename X> complex<float>& operator/=(const complex<X>&); };
The complex<float>
class is a straightforward specialization of the complex
class template. It changes the
operators to pass float
parameters by value instead of by reference, and it adds two new
constructors:
explicit
complex
(const
complex<double>& z)
, explicit
complex
(const complex<long
double>& z)
Constructs a complex number by copying from z
. Note that you might lose
precision or overflow, so the constructors are explicit
.