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Function std.mathspecial.digamma

Digamma function

real digamma (
  real x
) pure nothrow @nogc @safe;

The digamma function is the logarithmic derivative of the gamma function.

digamma(x) = d/dx logGamma(x)

See Also

logmdigamma, logmdigammaInverse.


Stephen L. Moshier (original C code). Conversion to D by Don Clugston


Boost License 1.0.