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authorEric Andersen <andersen@codepoet.org>2001-11-22 14:04:29 +0000
committerEric Andersen <andersen@codepoet.org>2001-11-22 14:04:29 +0000
commit7ce331c01ce6eb7b3f5c715a38a24359da9c6ee2 (patch)
tree3a7e8476e868ae15f4da1b7ce26b2db6f434468c /libm/ldouble/btdtrl.c
parentc117dd5fb183afb1a4790a6f6110d88704be6bf8 (diff)
Totally rework the math library, this time based on the MacOs X
math library (which is itself based on the math lib from FreeBSD). -Erik
Diffstat (limited to 'libm/ldouble/btdtrl.c')
-rw-r--r--libm/ldouble/btdtrl.c68
1 files changed, 0 insertions, 68 deletions
diff --git a/libm/ldouble/btdtrl.c b/libm/ldouble/btdtrl.c
deleted file mode 100644
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--- a/libm/ldouble/btdtrl.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 <math.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 ) );
-}