1 files changed, 0 insertions, 68 deletions
diff --git a/e_atanh.c b/e_atanh.c
deleted file mode 100644
index 4793e4a..0000000
--- a/e_atanh.c
+++ /dev/null
@@ -1,68 +0,0 @@
-
-/* @(#)e_atanh.c 1.3 95/01/18 */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunSoft, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
- * is preserved.
- * ====================================================
- *
- */
-
-/* __ieee754_atanh(x)
- * Method :
- *    1.Reduced x to positive by atanh(-x) = -atanh(x)
- *    2.For x>=0.5
- *                  1              2x                          x
- *	atanh(x) = --- * ieee_log(1 + -------) = 0.5 * ieee_log1p(2 * --------)
- *                  2             1 - x                      1 - x
- *	
- * 	For x<0.5
- *	atanh(x) = 0.5*ieee_log1p(2x+2x*x/(1-x))
- *
- * Special cases:
- *	atanh(x) is NaN if |x| > 1 with signal;
- *	atanh(NaN) is that NaN with no signal;
- *	atanh(+-1) is +-INF with signal.
- *
- */
-
-#include "fdlibm.h"
-
-#ifdef __STDC__
-static const double one = 1.0, huge = 1e300;
-#else
-static double one = 1.0, huge = 1e300;
-#endif
-
-static double zero = 0.0;
-
-#ifdef __STDC__
-	double __ieee754_atanh(double x)
-#else
-	double __ieee754_atanh(x)
-	double x;
-#endif
-{
-	double t;
-	int hx,ix;
-	unsigned lx;
-	hx = __HI(x);		/* high word */
-	lx = __LO(x);		/* low word */
-	ix = hx&0x7fffffff;
-	if ((ix|((lx|(-lx))>>31))>0x3ff00000) /* |x|>1 */
-	    return (x-x)/(x-x);
-	if(ix==0x3ff00000) 
-	    return x/zero;
-	if(ix<0x3e300000&&(huge+x)>zero) return x;	/* x<2**-28 */
-	__HI(x) = ix;		/* x <- |x| */
-	if(ix<0x3fe00000) {		/* x < 0.5 */
-	    t = x+x;
-	    t = 0.5*ieee_log1p(t+t*x/(one-x));
-	} else 
-	    t = 0.5*ieee_log1p((x+x)/(one-x));
-	if(hx>=0) return t; else return -t;
-}