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, 209 deletions

diff --git a/libm/double/rgamma.c b/libm/double/rgamma.c
deleted file mode 100644
index 1d6ff3840..000000000
--- a/libm/double/rgamma.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*						rgamma.c
- *
- *	Reciprocal gamma function
- *
- *
- *
- * SYNOPSIS:
- *
- * double x, y, rgamma();
- *
- * y = rgamma( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns one divided by the gamma function of the argument.
- *
- * The function is approximated by a Chebyshev expansion in
- * the interval [0,1].  Range reduction is by recurrence
- * for arguments between -34.034 and +34.84425627277176174.
- * 1/MAXNUM is returned for positive arguments outside this
- * range.  For arguments less than -34.034 the cosecant
- * reflection formula is applied; lograrithms are employed
- * to avoid unnecessary overflow.
- *
- * The reciprocal gamma function has no singularities,
- * but overflow and underflow may occur for large arguments.
- * These conditions return either MAXNUM or 1/MAXNUM with
- * appropriate sign.
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    DEC      -30,+30       4000       1.2e-16     1.8e-17
- *    IEEE     -30,+30      30000       1.1e-15     2.0e-16
- * For arguments less than -34.034 the peak error is on the
- * order of 5e-15 (DEC), excepting overflow or underflow.
- */
-
-/*
-Cephes Math Library Release 2.8:  June, 2000
-Copyright 1985, 1987, 2000 by Stephen L. Moshier
-*/
-
-#include <math.h>
-
-/* Chebyshev coefficients for reciprocal gamma function
- * in interval 0 to 1.  Function is 1/(x gamma(x)) - 1
- */
-
-#ifdef UNK
-static double R[] = {
- 3.13173458231230000000E-17,
--6.70718606477908000000E-16,
- 2.20039078172259550000E-15,
- 2.47691630348254132600E-13,
--6.60074100411295197440E-12,
- 5.13850186324226978840E-11,
- 1.08965386454418662084E-9,
--3.33964630686836942556E-8,
- 2.68975996440595483619E-7,
- 2.96001177518801696639E-6,
--8.04814124978471142852E-5,
- 4.16609138709688864714E-4,
- 5.06579864028608725080E-3,
--6.41925436109158228810E-2,
--4.98558728684003594785E-3,
- 1.27546015610523951063E-1
-};
-#endif
-
-#ifdef DEC
-static unsigned short R[] = {
-0022420,0066376,0176751,0071636,
-0123501,0051114,0042104,0131153,
-0024036,0107013,0126504,0033361,
-0025613,0070040,0035174,0162316,
-0126750,0037060,0077775,0122202,
-0027541,0177143,0037675,0105150,
-0030625,0141311,0075005,0115436,
-0132017,0067714,0125033,0014721,
-0032620,0063707,0105256,0152643,
-0033506,0122235,0072757,0170053,
-0134650,0144041,0015617,0016143,
-0035332,0066125,0000776,0006215,
-0036245,0177377,0137173,0131432,
-0137203,0073541,0055645,0141150,
-0136243,0057043,0026226,0017362,
-0037402,0115554,0033441,0012310
-};
-#endif
-
-#ifdef IBMPC
-static unsigned short R[] = {
-0x2e74,0xdfbd,0x0d9f,0x3c82,
-0x964d,0x8888,0x2a49,0xbcc8,
-0x86de,0x75a8,0xd1c1,0x3ce3,
-0x9c9a,0x074f,0x6e04,0x3d51,
-0xb490,0x0fff,0x07c6,0xbd9d,
-0xb14d,0x67f7,0x3fcc,0x3dcc,
-0xb364,0x2f40,0xb859,0x3e12,
-0x633a,0x9543,0xedf9,0xbe61,
-0xdab4,0xf155,0x0cf8,0x3e92,
-0xfe05,0xaebd,0xd493,0x3ec8,
-0xe38c,0x2371,0x1904,0xbf15,
-0xc192,0xa03f,0x4d8a,0x3f3b,
-0x7663,0xf7cf,0xbfdf,0x3f74,
-0xb84d,0x2b74,0x6eec,0xbfb0,
-0xc3de,0x6592,0x6bc4,0xbf74,
-0x2299,0x86e4,0x536d,0x3fc0
-};
-#endif
-
-#ifdef MIEEE
-static unsigned short R[] = {
-0x3c82,0x0d9f,0xdfbd,0x2e74,
-0xbcc8,0x2a49,0x8888,0x964d,
-0x3ce3,0xd1c1,0x75a8,0x86de,
-0x3d51,0x6e04,0x074f,0x9c9a,
-0xbd9d,0x07c6,0x0fff,0xb490,
-0x3dcc,0x3fcc,0x67f7,0xb14d,
-0x3e12,0xb859,0x2f40,0xb364,
-0xbe61,0xedf9,0x9543,0x633a,
-0x3e92,0x0cf8,0xf155,0xdab4,
-0x3ec8,0xd493,0xaebd,0xfe05,
-0xbf15,0x1904,0x2371,0xe38c,
-0x3f3b,0x4d8a,0xa03f,0xc192,
-0x3f74,0xbfdf,0xf7cf,0x7663,
-0xbfb0,0x6eec,0x2b74,0xb84d,
-0xbf74,0x6bc4,0x6592,0xc3de,
-0x3fc0,0x536d,0x86e4,0x2299
-};
-#endif
-
-static char name[] = "rgamma";
-
-#ifdef ANSIPROT
-extern double chbevl ( double, void *, int );
-extern double exp ( double );
-extern double log ( double );
-extern double sin ( double );
-extern double lgam ( double );
-#else
-double chbevl(), exp(), log(), sin(), lgam();
-#endif
-extern double PI, MAXLOG, MAXNUM;
-
-
-double rgamma(x)
-double x;
-{
-double w, y, z;
-int sign;
-
-if( x > 34.84425627277176174)
-	{
-	mtherr( name, UNDERFLOW );
-	return(1.0/MAXNUM);
-	}
-if( x < -34.034 )
-	{
-	w = -x;
-	z = sin( PI*w );
-	if( z == 0.0 )
-		return(0.0);
-	if( z < 0.0 )
-		{
-		sign = 1;
-		z = -z;
-		}
-	else
-		sign = -1;
-
-	y = log( w * z ) - log(PI) + lgam(w);
-	if( y < -MAXLOG )
-		{
-		mtherr( name, UNDERFLOW );
-		return( sign * 1.0 / MAXNUM );
-		}
-	if( y > MAXLOG )
-		{
-		mtherr( name, OVERFLOW );
-		return( sign * MAXNUM );
-		}
-	return( sign * exp(y));
-	}
-z = 1.0;
-w = x;
-
-while( w > 1.0 )	/* Downward recurrence */
-	{
-	w -= 1.0;
-	z *= w;
-	}
-while( w < 0.0 )	/* Upward recurrence */
-	{
-	z /= w;
-	w += 1.0;
-	}
-if( w == 0.0 )		/* Nonpositive integer */
-	return(0.0);
-if( w == 1.0 )		/* Other integer */
-	return( 1.0/z );
-
-y = w * ( 1.0 + chbevl( 4.0*w-2.0, R, 16 ) ) / z;
-return(y);
-}