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, 201 deletions

diff --git a/libm/double/beta.c b/libm/double/beta.c
deleted file mode 100644
index 410760f32..000000000
--- a/libm/double/beta.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*							beta.c
- *
- *	Beta function
- *
- *
- *
- * SYNOPSIS:
- *
- * double a, b, y, beta();
- *
- * y = beta( a, b );
- *
- *
- *
- * DESCRIPTION:
- *
- *                   -     -
- *                  | (a) | (b)
- * beta( a, b )  =  -----------.
- *                     -
- *                    | (a+b)
- *
- * For large arguments the logarithm of the function is
- * evaluated using lgam(), then exponentiated.
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    DEC        0,30        1700       7.7e-15     1.5e-15
- *    IEEE       0,30       30000       8.1e-14     1.1e-14
- *
- * ERROR MESSAGES:
- *
- *   message         condition          value returned
- * beta overflow    log(beta) > MAXLOG       0.0
- *                  a or b <0 integer        0.0
- *
- */
-
-/*							beta.c	*/
-
-
-/*
-Cephes Math Library Release 2.0:  April, 1987
-Copyright 1984, 1987 by Stephen L. Moshier
-Direct inquiries to 30 Frost Street, Cambridge, MA 02140
-*/
-
-#include <math.h>
-
-#ifdef UNK
-#define MAXGAM 34.84425627277176174
-#endif
-#ifdef DEC
-#define MAXGAM 34.84425627277176174
-#endif
-#ifdef IBMPC
-#define MAXGAM 171.624376956302725
-#endif
-#ifdef MIEEE
-#define MAXGAM 171.624376956302725
-#endif
-
-#ifdef ANSIPROT
-extern double fabs ( double );
-extern double gamma ( double );
-extern double lgam ( double );
-extern double exp ( double );
-extern double log ( double );
-extern double floor ( double );
-#else
-double fabs(), gamma(), lgam(), exp(), log(), floor();
-#endif
-extern double MAXLOG, MAXNUM;
-extern int sgngam;
-
-double beta( a, b )
-double a, b;
-{
-double y;
-int sign;
-
-sign = 1;
-
-if( a <= 0.0 )
-	{
-	if( a == floor(a) )
-		goto over;
-	}
-if( b <= 0.0 )
-	{
-	if( b == floor(b) )
-		goto over;
-	}
-
-
-y = a + b;
-if( fabs(y) > MAXGAM )
-	{
-	y = lgam(y);
-	sign *= sgngam; /* keep track of the sign */
-	y = lgam(b) - y;
-	sign *= sgngam;
-	y = lgam(a) + y;
-	sign *= sgngam;
-	if( y > MAXLOG )
-		{
-over:
-		mtherr( "beta", OVERFLOW );
-		return( sign * MAXNUM );
-		}
-	return( sign * exp(y) );
-	}
-
-y = gamma(y);
-if( y == 0.0 )
-	goto over;
-
-if( a > b )
-	{
-	y = gamma(a)/y;
-	y *= gamma(b);
-	}
-else
-	{
-	y = gamma(b)/y;
-	y *= gamma(a);
-	}
-
-return(y);
-}
-
-
-
-/* Natural log of |beta|.  Return the sign of beta in sgngam.  */
-
-double lbeta( a, b )
-double a, b;
-{
-double y;
-int sign;
-
-sign = 1;
-
-if( a <= 0.0 )
-	{
-	if( a == floor(a) )
-		goto over;
-	}
-if( b <= 0.0 )
-	{
-	if( b == floor(b) )
-		goto over;
-	}
-
-
-y = a + b;
-if( fabs(y) > MAXGAM )
-	{
-	y = lgam(y);
-	sign *= sgngam; /* keep track of the sign */
-	y = lgam(b) - y;
-	sign *= sgngam;
-	y = lgam(a) + y;
-	sign *= sgngam;
-	sgngam = sign;
-	return( y );
-	}
-
-y = gamma(y);
-if( y == 0.0 )
-	{
-over:
-	mtherr( "lbeta", OVERFLOW );
-	return( sign * MAXNUM );
-	}
-
-if( a > b )
-	{
-	y = gamma(a)/y;
-	y *= gamma(b);
-	}
-else
-	{
-	y = gamma(b)/y;
-	y *= gamma(a);
-	}
-
-if( y < 0 )
-  {
-    sgngam = -1;
-    y = -y;
-  }
-else
-  sgngam = 1;
-
-return( log(y) );
-}