From 7ce331c01ce6eb7b3f5c715a38a24359da9c6ee2 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 22 Nov 2001 14:04:29 +0000
Subject: 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

---
 libm/float/atanhf.c | 92 -----------------------------------------------------
 1 file changed, 92 deletions(-)
 delete mode 100644 libm/float/atanhf.c

(limited to 'libm/float/atanhf.c')

diff --git a/libm/float/atanhf.c b/libm/float/atanhf.c
deleted file mode 100644
index dfadad09e..000000000
--- a/libm/float/atanhf.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*							atanhf.c
- *
- *	Inverse hyperbolic tangent
- *
- *
- *
- * SYNOPSIS:
- *
- * float x, y, atanhf();
- *
- * y = atanhf( x );
- *
- *
- *
- * DESCRIPTION:
- *
- * Returns inverse hyperbolic tangent of argument in the range
- * MINLOGF to MAXLOGF.
- *
- * If |x| < 0.5, a polynomial approximation is used.
- * Otherwise,
- *        atanh(x) = 0.5 * log( (1+x)/(1-x) ).
- *
- *
- *
- * ACCURACY:
- *
- *                      Relative error:
- * arithmetic   domain     # trials      peak         rms
- *    IEEE      -1,1        100000      1.4e-7      3.1e-8
- *
- */
-
-/*						atanh.c	*/
-
-
-/*
-Cephes Math Library Release 2.2:  June, 1992
-Copyright (C) 1987, 1992 by Stephen L. Moshier
-Direct inquiries to 30 Frost Street, Cambridge, MA 02140
-*/
-
-/* Single precision inverse hyperbolic tangent
- * test interval: [-0.5, +0.5]
- * trials: 10000
- * peak relative error: 8.2e-8
- * rms relative error: 3.0e-8
- */
-#include <math.h>
-extern float MAXNUMF;
-
-float logf( float );
-
-float atanhf( float xx )
-{
-float x, z;
-
-x = xx;
-if( x < 0 )
-	z = -x;
-else
-	z = x;
-if( z >= 1.0 )
-	{
-	if( x == 1.0 )
-		return( MAXNUMF );
-	if( x == -1.0 )
-		return( -MAXNUMF );
-	mtherr( "atanhl", DOMAIN );
-	return( MAXNUMF );
-	}
-
-if( z < 1.0e-4 )
-	return(x);
-
-if( z < 0.5 )
-	{
-	z = x * x;
-	z =
-	(((( 1.81740078349E-1 * z
-	  + 8.24370301058E-2) * z
-	  + 1.46691431730E-1) * z
-	  + 1.99782164500E-1) * z
-	  + 3.33337300303E-1) * z * x
-	  + x;
-	}
-else
-	{
-	z = 0.5 * logf( (1.0+x)/(1.0-x) );
-	}
-return( z );
-}
-- 
cgit v1.2.3