| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Cephes/ldouble/ (Cephes Mathematical Library ©) Datei vom 12.5.2026 mit Größe 1 kB |
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Quelle btdtrl.cSprache: C |
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/* btdtrl.c * * Beta distribution * * * * SYNOPSIS: * * long double a, b, x, y, btdtrl(); * * y = btdtrl( a, b, x ); * * * * DESCRIPTION: * * Returns the area from zero to x under the beta density * function: * * * x * - - * | (a+b) | | a-1 b-1 * P(x) = ---------- | t (1-t) dt * - - | | * | (a) | (b) - * 0 * * * The mean value of this distribution is a/(a+b). The variance * is ab/[(a+b)^2 (a+b+1)]. * * This function is identical to the incomplete beta integral * function, incbetl(a, b, x). * * The complemented function is * * 1 - P(1-x) = incbetl( b, a, x ); * * * ACCURACY: * * See incbetl.c. * */ /* btdtrl() */ /* Cephes Math Library Release 2.0: April, 1987 Copyright 1984, 1995 by Stephen L. Moshier Direct inquiries to 30 Frost Street, Cambridge, MA 02140 */ #include "mconf.h" #ifdef ANSIPROT extern long double incbetl ( long double, long double, long double ); #else long double incbetl(); #endif long double btdtrl( a, b, x ) long double a, b, x; { return( incbetl( a, b, x ) ); }
¤ Dauer der Verarbeitung: 0.10 Sekunden (vorverarbeitet am 2026-06-13) ¤*© Formatika GbR, Deutschland |
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2026-07-09