Computation of the Incomplete Gamma Function Ratios

A method, made up of several algorithms, is given for computing the incomplete gamma function ratio, P(a, x) and its complement Q(a, x) for all real arguments a 0, x or = 0. The difficult case when a and x are large is treated by a modified version of Takenaga's method. The resulting computer p...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DiDonato, A R, Hageman, R K
Format:	Report
Sprache:	eng
Schlagworte:	ALGORITHMS CDC-6700 COMPUTERS COMPUTATIONS Computer Programming and Software COMPUTER PROGRAMS FORTRAN GAMMA FUNCTION SPECIAL FUNCTIONS(MATHEMATICS) Theoretical Mathematics
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