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std::acos(std::complex)

From cppreference.com
< cpp‎ | numeric‎ | complex
Defined in header <complex>
template< class T >
complex<T> acos( const complex<T>& z );
(since C++11)

Computes complex arc cosine of a complex value z. Branch cut exists outside the interval [−1 ; +1] along the real axis.

[edit] Parameters

z - complex value

[edit] Return value

Complex arc cosine of z in the range [0 ; ∞) along the real axis and in the range [−iπ ; iπ] along the imaginary axis.

[edit] See also

computes arc sine of a complex number (arcsin(z))
(function template) [edit]
computes arc tangent of a complex number (arctan(z))
(function template) [edit]
computes cosine of a complex number (cos(z))
(function template) [edit]
computes arc cosine (arccos(x))
(function) [edit]
applies the function std::acos to each element of valarray
(function template) [edit]
C documentation for cacos