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Function std.mathspecial.gamma

The Gamma function, γ(x)

γ(x) is a generalisation of the factorial function to real and complex numbers. Like x!, γ(x+1) = x * γ(x).

Mathematically, if z.re > 0 then γ(z) = 0, ∞ t, z-1e, -t dt

x, &gamma;(x) , ±0.0, integer > 0, (x-1)! integer < 0, +∞, +∞ -∞,

Prototype

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

Authors

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

License

Boost License 1.0.

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