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, 135 deletions

diff --git a/libm/float/spencef.c b/libm/float/spencef.c
deleted file mode 100644
index 52799babe..000000000
--- a/libm/float/spencef.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*							spencef.c
- *
- *	Dilogarithm
- *
- *
- *
- * SYNOPSIS:
- *
- * float x, y, spencef();
- *
- * y = spencef( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Computes the integral
- *
- *                    x
- *                    -
- *                   | | log t
- * spence(x)  =  -   |   ----- dt
- *                 | |   t - 1
- *                  -
- *                  1
- *
- * for x >= 0.  A rational approximation gives the integral in
- * the interval (0.5, 1.5).  Transformation formulas for 1/x
- * and 1-x are employed outside the basic expansion range.
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE      0,4         30000       4.4e-7      6.3e-8
- *
- *
- */
-
-/*							spence.c */
-
-
-/*
-Cephes Math Library Release 2.1:  January, 1989
-Copyright 1985, 1987, 1989 by Stephen L. Moshier
-Direct inquiries to 30 Frost Street, Cambridge, MA 02140
-*/
-
-#include <math.h>
-
-static float A[8] = {
-  4.65128586073990045278E-5,
-  7.31589045238094711071E-3,
-  1.33847639578309018650E-1,
-  8.79691311754530315341E-1,
-  2.71149851196553469920E0,
-  4.25697156008121755724E0,
-  3.29771340985225106936E0,
-  1.00000000000000000126E0,
-};
-static float B[8] = {
-  6.90990488912553276999E-4,
-  2.54043763932544379113E-2,
-  2.82974860602568089943E-1,
-  1.41172597751831069617E0,
-  3.63800533345137075418E0,
-  5.03278880143316990390E0,
-  3.54771340985225096217E0,
-  9.99999999999999998740E-1,
-};
-
-extern float PIF, MACHEPF;
-
-/* pi * pi / 6 */
-#define PIFS 1.64493406684822643647
-
-
-float logf(float), polevlf(float, float *, int);
-float spencef(float xx)
-{
-float x, w, y, z;
-int flag;
-
-x = xx;
-if( x < 0.0 )
-	{
-	mtherr( "spencef", DOMAIN );
-	return(0.0);
-	}
-
-if( x == 1.0 )
-	return( 0.0 );
-
-if( x == 0.0 )
-	return( PIFS );
-
-flag = 0;
-
-if( x > 2.0 )
-	{
-	x = 1.0/x;
-	flag |= 2;
-	}
-
-if( x > 1.5 )
-	{
-	w = (1.0/x) - 1.0;
-	flag |= 2;
-	}
-
-else if( x < 0.5 )
-	{
-	w = -x;
-	flag |= 1;
-	}
-
-else
-	w = x - 1.0;
-
-
-y = -w * polevlf( w, A, 7) / polevlf( w, B, 7 );
-
-if( flag & 1 )
-	y = PIFS - logf(x) * logf(1.0-x) - y;
-
-if( flag & 2 )
-	{
-	z = logf(x);
-	y = -0.5 * z * z  -  y;
-	}
-
-return( y );
-}