loggamma
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constexpr Complex loggamma(const Complex &z) noexcept
Evaluates the natural log of the gamma function [1].
Parameters
- const Complex &z
A complex number.
Returns
- type Complex
A complex number.
This function simply evaluates \(\ln(\Gamma(z))\).
Example
Complex z = 1.0 + 1_j;
std::cout << loggamma(z) << "\n";
Output:
-0.650923 - 0.30164j
References