ocean.math.GammaFunction

Implementation of the gamma and beta functions, and their integrals.

Members

Functions

beta real beta(real x, real y): Beta function
betaIncomplete real betaIncomplete(real aa, real bb, real xx): Incomplete beta integral
betaIncompleteInv real betaIncompleteInv(real aa, real bb, real yy0): Inverse of incomplete beta integral
digamma real digamma(real x): Digamma function
gamma real gamma(real x): The Gamma function, $(GAMMA)(x)
gammaIncomplete real gammaIncomplete(real a, real x)
gammaIncompleteCompl real gammaIncompleteCompl(real a, real x): Incomplete gamma integral and its complement
gammaIncompleteComplInv real gammaIncompleteComplInv(real a, real p): Inverse of complemented incomplete gamma integral
logGamma real logGamma(real x): Natural logarithm of gamma function.
sgnGamma real sgnGamma(real x): The sign of $(GAMMA)(x).

Static variables

MAXGAMMA real MAXGAMMA;: The maximum value of x for which gamma(x) < real.infinity.

Meta

Source

See Source File

License

Tango Dual License: 3-Clause BSD License / Academic Free License v3.0. See LICENSE_TANGO.txt for details.

Copyright

Based on the CEPHES math library, which is Copyright (C) 1994 Stephen L. Moshier (moshier@world.std.com). Some parts copyright (c) 2009-2016 dunnhumby Germany GmbH. All rights reserved.

Authors

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