Complex.this

this(Complex!R z) @safe pure nothrow @nogc

Construct a complex number with the specified real and imaginary parts. In the case where a single argument is passed that is not complex, the imaginary part of the result will be zero.

this(const Rx x, const Ry y) @safe pure nothrow @nogc

ditto

this(const R r) @safe pure nothrow @nogc

ditto