tmp/tmpncv2lvhd/{from.md → to.md}
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### Member functions <a id="complex.members">[[complex.members]]</a>
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``` cpp
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-
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```
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*Ensures:* `real() == re && imag() == im` is `true`.
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``` cpp
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constexpr T real() const;
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```
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*Returns:* The value of the real component.
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### Member functions <a id="complex.members">[[complex.members]]</a>
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``` cpp
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constexpr complex(const T& re = T(), const T& im = T());
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```
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*Ensures:* `real() == re && imag() == im` is `true`.
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``` cpp
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template<class X> constexpr explicit(see below) complex(const complex<X>& other);
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```
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*Effects:* Initializes the real part with `other.real()` and the
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imaginary part with `other.imag()`.
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*Remarks:* The expression inside `explicit` evaluates to `false` if and
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only if the floating-point conversion rank of `T` is greater than or
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equal to the floating-point conversion rank of `X`.
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``` cpp
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constexpr T real() const;
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```
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*Returns:* The value of the real component.
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