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, 156 deletions

diff --git a/libm/double/atanh.c b/libm/double/atanh.c
deleted file mode 100644
index 7bb742d3d..000000000
--- a/libm/double/atanh.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*							atanh.c
- *
- *	Inverse hyperbolic tangent
- *
- *
- *
- * SYNOPSIS:
- *
- * double x, y, atanh();
- *
- * y = atanh( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns inverse hyperbolic tangent of argument in the range
- * MINLOG to MAXLOG.
- *
- * If |x| < 0.5, the rational form x + x**3 P(x)/Q(x) is
- * employed.  Otherwise,
- *        atanh(x) = 0.5 * log( (1+x)/(1-x) ).
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    DEC       -1,1        50000       2.4e-17     6.4e-18
- *    IEEE      -1,1        30000       1.9e-16     5.2e-17
- *
- */
-
-/*						atanh.c	*/
-
-
-/*
-Cephes Math Library Release 2.8:  June, 2000
-Copyright (C) 1987, 1995, 2000 by Stephen L. Moshier
-*/
-
-#include <math.h>
-
-#ifdef UNK
-static double P[] = {
--8.54074331929669305196E-1,
- 1.20426861384072379242E1,
--4.61252884198732692637E1,
- 6.54566728676544377376E1,
--3.09092539379866942570E1
-};
-static double Q[] = {
-/* 1.00000000000000000000E0,*/
--1.95638849376911654834E1,
- 1.08938092147140262656E2,
--2.49839401325893582852E2,
- 2.52006675691344555838E2,
--9.27277618139601130017E1
-};
-#endif
-#ifdef DEC
-static unsigned short P[] = {
-0140132,0122235,0105775,0130300,
-0041100,0127327,0124407,0034722,
-0141470,0100113,0115607,0130535,
-0041602,0164721,0003257,0013673,
-0141367,0043046,0166673,0045750
-};
-static unsigned short Q[] = {
-/*0040200,0000000,0000000,0000000,*/
-0141234,0101326,0015460,0134564,
-0041731,0160115,0116451,0032045,
-0142171,0153343,0000532,0167226,
-0042174,0000665,0077604,0000310,
-0141671,0072235,0031114,0074377
-};
-#endif
-
-#ifdef IBMPC
-static unsigned short P[] = {
-0xb618,0xb17f,0x5493,0xbfeb,
-0xe73a,0xf520,0x15da,0x4028,
-0xf62c,0x7370,0x1009,0xc047,
-0xe2f7,0x20d5,0x5d3a,0x4050,
-0x697d,0xddb7,0xe8c4,0xc03e
-};
-static unsigned short Q[] = {
-/*0x0000,0x0000,0x0000,0x3ff0,*/
-0x172f,0xc366,0x905a,0xc033,
-0x2685,0xb3a5,0x3c09,0x405b,
-0x5dd3,0x602b,0x3adc,0xc06f,
-0x8019,0xaff0,0x8036,0x406f,
-0x8f20,0xa649,0x2e93,0xc057
-};
-#endif
-
-#ifdef MIEEE
-static unsigned short P[] = {
-0xbfeb,0x5493,0xb17f,0xb618,
-0x4028,0x15da,0xf520,0xe73a,
-0xc047,0x1009,0x7370,0xf62c,
-0x4050,0x5d3a,0x20d5,0xe2f7,
-0xc03e,0xe8c4,0xddb7,0x697d
-};
-static unsigned short Q[] = {
-0xc033,0x905a,0xc366,0x172f,
-0x405b,0x3c09,0xb3a5,0x2685,
-0xc06f,0x3adc,0x602b,0x5dd3,
-0x406f,0x8036,0xaff0,0x8019,
-0xc057,0x2e93,0xa649,0x8f20
-};
-#endif
-
-#ifdef ANSIPROT
-extern double fabs ( double );
-extern double log ( double x );
-extern double polevl ( double x, void *P, int N );
-extern double p1evl ( double x, void *P, int N );
-#else
-double fabs(), log(), polevl(), p1evl();
-#endif
-extern double INFINITY, NAN;
-
-double atanh(x)
-double x;
-{
-double s, z;
-
-#ifdef MINUSZERO
-if( x == 0.0 )
-	return(x);
-#endif
-z = fabs(x);
-if( z >= 1.0 )
-	{
-	if( x == 1.0 )
-		return( INFINITY );
-	if( x == -1.0 )
-		return( -INFINITY );
-	mtherr( "atanh", DOMAIN );
-	return( NAN );
-	}
-
-if( z < 1.0e-7 )
-	return(x);
-
-if( z < 0.5 )
-	{
-	z = x * x;
-	s = x   +  x * z * (polevl(z, P, 4) / p1evl(z, Q, 5));
-	return(s);
-	}
-
-return( 0.5 * log((1.0+x)/(1.0-x)) );
-}