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4.4 Elementary complex functions
The class cl_N
defines the following operation:
cl_N complex (const cl_R& a, const cl_R& b)

Returns the complex number
a+bi
, that is, the complex number with real parta
and imaginary partb
.
Each of the classes cl_N
, cl_R
defines the following operations:
cl_R realpart (const type& x)

Returns the real part of
x
. cl_R imagpart (const type& x)

Returns the imaginary part of
x
. type conjugate (const type& x)

Returns the complex conjugate of
x
.
We have the relations

x = complex(realpart(x), imagpart(x))

conjugate(x) = complex(realpart(x), imagpart(x))
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