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Class C7a ... Gamma, log gamma, reciprocal gamma functions

Modules for class C7a

Package AMOS at NETLIB

Package CEPHES at NETLIB

CPROB C routines for evaluation of probability distribution functions and their comple ...
QFLOAT C routines for extended-precision evaluation of mathematical functions. Includes ...

Package CMLIB at ITL|ARNO

ALGAMS (DLGAMS) ln(abs(gamma(x))) and sign(gamma(x)).
ALNGAM (DLNGAM) ln(abs(gamma(x))).
CGAMMA gamma(z).
CGAMR 1/gamma(z).
CLNGAM ln(gamma(z)).
DGAMMA (GAMMA) gamma(x), for double precision x.
DGAMR (GAMR) 1/gamma(x), for double precision x.
DLGAMS (ALGAMS) ln(abs(gamma(x))) and sign(gamma(x)).
DLNGAM (ALNGAM) ln(abs(gamma(x))).
DPOCH (POCH) Pochhammer's symbol. Input and output are double precision.
DPOCH1 (POCH1) Pochhammer's symbol from first order. Input and output are double precision.
GAMLN ln(gamma(x)), for non-negative x.
GAMMA (DGAMMA) gamma(x).
GAMR (DGAMR) 1/gamma(x).
POCH (DPOCH) Pochhammer's symbol. Input and output are real.
POCH1 (DPOCH1) Pochhammer's symbol from first order. Input and output are real.

Package FDLIBM at NETLIB

GAMMA Gamma(x). A portable C implementation for machines that support IEEE 754 floatin ...
LGAMMA Log(gamma(x)). A portable C implementation for machines that support IEEE 754 fl ...

Package FN at NETLIB

ALGAMS (DLGAMS) Ln(abs(gamma(x))) and sign(gamma(x)).
ALNGAM (DLNGAM) Ln(abs(gamma(x))).
CGAMMA Complex gamma function.
CGAMR 1/gamma(z).
CLNGAM Ln(gamma(z)).
CPSI Logarithmic derivative of the gamma function for a complex argument.
DGAMMA (GAMMA) gamma(x), for double precision x.
DGAMR (GAMR) 1/gamma(x), for double precision x.
DLGAMS (ALGAMS) Return the logarithm of the absolute value of the gamma function and the sign of ...
DLNGAM (ALNGAM) Ln(abs(gamma(x))).
DPOCH (POCH) Pochhammer's symbol. Input and output are double precision.
DPOCH1 (POCH1) Pochhammer's symbol from first order. Input and output are double precision.
GAMMA (DGAMMA) gamma(x).
GAMR (DGAMR) 1/gamma(x).
POCH (DPOCH) Generalization of Pochhammer's symbol.
POCH1 (DPOCH1) Generalization of Pochhammer's symbol starting from first order.

Package NAG at ITL|AIX

NAG_GAMMA Returns the value of the Gamma function Gamma(x).
NAG_LOG_GAMMA Returns a value for the logarithm of the Gamma function, ln Gamma(x).

Package NMS at ITL

Package SLATEC at ITL|ARNO

ALGAMS (DLGAMS) Compute the logarithm of the absolute value of the Gamma function.
ALNGAM (DLNGAM) Compute the logarithm of the absolute value of the Gamma function.
C0LGMC Evaluate (Z+0.5)*LOG((Z+1.)/Z) 1.0 with relative accuracy.
CGAMMA Compute the complete Gamma function.
CGAMR Compute the reciprocal of the Gamma function.
CLNGAM Compute the logarithm of the absolute value of the Gamma function.
DGAMLM (GAMLIM) Compute the minimum and maximum bounds for the argument in the Gamma function.
DGAMMA (GAMMA) Compute the complete Gamma function.
DGAMR (GAMR) Compute the reciprocal of the Gamma function.
DLGAMS (ALGAMS) Compute the logarithm of the absolute value of the Gamma function.
DLNGAM (ALNGAM) Compute the logarithm of the absolute value of the Gamma function.
DPOCH (POCH) Evaluate a generalization of Pochhammer's symbol.
DPOCH1 (POCH1) Calculate a generalization of Pochhammer's symbol starting from first order.
GAMLIM (DGAMLM) Compute the minimum and maximum bounds for the argument in the Gamma function.
GAMMA (DGAMMA) Compute the complete Gamma function.
GAMR (DGAMR) Compute the reciprocal of the Gamma function.
POCH (DPOCH) Evaluate a generalization of Pochhammer's symbol.
POCH1 (DPOCH1) Calculate a generalization of Pochhammer's symbol starting from first order.

ALGAMA Calculates the LOG(GAMMA) function for a positive real argument X. Uses rationa ...
GAMMA Calculates the GAMMA function for a real argument X. Uses rational functions tha ...

Package TOMS at NETLIB

814 FM: Multiple precision arithmetic, and evalution of gamma and related functions, ...

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This page was generated on Sun Oct 12, 2008 at 05:37:43 UTC