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

1 files changed, 0 insertions, 214 deletions

diff --git a/libm/float/fdtrf.c b/libm/float/fdtrf.c
deleted file mode 100644
index 5fdc6d81d..000000000
--- a/libm/float/fdtrf.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/*							fdtrf.c
- *
- *	F distribution
- *
- *
- *
- * SYNOPSIS:
- *
- * int df1, df2;
- * float x, y, fdtrf();
- *
- * y = fdtrf( df1, df2, x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns the area from zero to x under the F density
- * function (also known as Snedcor's density or the
- * variance ratio density).  This is the density
- * of x = (u1/df1)/(u2/df2), where u1 and u2 are random
- * variables having Chi square distributions with df1
- * and df2 degrees of freedom, respectively.
- *
- * The incomplete beta integral is used, according to the
- * formula
- *
- *	P(x) = incbet( df1/2, df2/2, (df1*x/(df2 + df1*x) ).
- *
- *
- * The arguments a and b are greater than zero, and x
- * x is nonnegative.
- * ACCURACY:
- *
- *        Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE       0,100       5000       2.2e-5      1.1e-6
- *
- * ERROR MESSAGES:
- *
- *   message         condition      value returned
- * fdtrf domain    a<0, b<0, x<0         0.0
- *
- */
-/*							fdtrcf()
- *
- *	Complemented F distribution
- *
- *
- *
- * SYNOPSIS:
- *
- * int df1, df2;
- * float x, y, fdtrcf();
- *
- * y = fdtrcf( df1, df2, x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns the area from x to infinity under the F density
- * function (also known as Snedcor's density or the
- * variance ratio density).
- *
- *
- *                      inf.
- *                       -
- *              1       | |  a-1      b-1
- * 1-P(x)  =  ------    |   t    (1-t)    dt
- *            B(a,b)  | |
- *                     -
- *                      x
- *
- * (See fdtr.c.)
- *
- * The incomplete beta integral is used, according to the
- * formula
- *
- *	P(x) = incbet( df2/2, df1/2, (df2/(df2 + df1*x) ).
- *
- *
- * ACCURACY:
- *
- *        Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE       0,100       5000       7.3e-5      1.2e-5
- *
- * ERROR MESSAGES:
- *
- *   message         condition      value returned
- * fdtrcf domain   a<0, b<0, x<0         0.0
- *
- */
-/*							fdtrif()
- *
- *	Inverse of complemented F distribution
- *
- *
- *
- * SYNOPSIS:
- *
- * float df1, df2, x, y, fdtrif();
- *
- * x = fdtrif( df1, df2, y );
- *
- *
- *
- *
- * DESCRIPTION:
- *
- * Finds the F density argument x such that the integral
- * from x to infinity of the F density is equal to the
- * given probability y.
- *
- * This is accomplished using the inverse beta integral
- * function and the relations
- *
- *      z = incbi( df2/2, df1/2, y )
- *      x = df2 (1-z) / (df1 z).
- *
- * Note: the following relations hold for the inverse of
- * the uncomplemented F distribution:
- *
- *      z = incbi( df1/2, df2/2, y )
- *      x = df2 z / (df1 (1-z)).
- *
- *
- *
- * ACCURACY:
- *
- * arithmetic   domain     # trials      peak         rms
- *        Absolute error:
- *    IEEE       0,100       5000       4.0e-5      3.2e-6
- *        Relative error:
- *    IEEE       0,100       5000       1.2e-3      1.8e-5
- *
- * ERROR MESSAGES:
- *
- *   message         condition      value returned
- * fdtrif domain  y <= 0 or y > 1       0.0
- *                     v < 1
- *
- */
-
-
-/*
-Cephes Math Library Release 2.2:  July, 1992
-Copyright 1984, 1987, 1992 by Stephen L. Moshier
-Direct inquiries to 30 Frost Street, Cambridge, MA 02140
-*/
-
-
-#include <math.h>
-
-#ifdef ANSIC
-float incbetf(float, float, float);
-float incbif(float, float, float);
-#else
-float incbetf(), incbif();
-#endif
-
-float fdtrcf( int ia, int ib, float xx )
-{
-float x, a, b, w;
-
-x = xx;
-if( (ia < 1) || (ib < 1) || (x < 0.0) )
-	{
-	mtherr( "fdtrcf", DOMAIN );
-	return( 0.0 );
-	}
-a = ia;
-b = ib;
-w = b / (b + a * x);
-return( incbetf( 0.5*b, 0.5*a, w ) );
-}
-
-
-
-float fdtrf( int ia, int ib, int xx )
-{
-float x, a, b, w;
-
-x = xx;
-if( (ia < 1) || (ib < 1) || (x < 0.0) )
-	{
-	mtherr( "fdtrf", DOMAIN );
-	return( 0.0 );
-	}
-a = ia;
-b = ib;
-w = a * x;
-w = w / (b + w);
-return( incbetf( 0.5*a, 0.5*b, w) );
-}
-
-
-float fdtrif( int ia, int ib, float yy )
-{
-float y, a, b, w, x;
-
-y = yy;
-if( (ia < 1) || (ib < 1) || (y <= 0.0) || (y > 1.0) )
-	{
-	mtherr( "fdtrif", DOMAIN );
-	return( 0.0 );
-	}
-a = ia;
-b = ib;
-w = incbif( 0.5*b, 0.5*a, y );
-x = (b - b*w)/(a*w);
-return(x);
-}