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-rw-r--r--newlib/libm/math/e_atanh.c75
1 files changed, 0 insertions, 75 deletions
diff --git a/newlib/libm/math/e_atanh.c b/newlib/libm/math/e_atanh.c
deleted file mode 100644
index 58ad325..0000000
--- a/newlib/libm/math/e_atanh.c
+++ /dev/null
@@ -1,75 +0,0 @@
-
-/* @(#)e_atanh.c 5.1 93/09/24 */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, 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) = --- * log(1 + -------) = 0.5 * log1p(2 * --------)
- * 2 1 - x 1 - x
- *
- * For x<0.5
- * atanh(x) = 0.5*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"
-
-#ifndef _DOUBLE_IS_32BITS
-
-#ifdef __STDC__
-static const double one = 1.0, huge = 1e300;
-#else
-static double one = 1.0, huge = 1e300;
-#endif
-
-#ifdef __STDC__
-static const double zero = 0.0;
-#else
-static double zero = 0.0;
-#endif
-
-#ifdef __STDC__
- double __ieee754_atanh(double x)
-#else
- double __ieee754_atanh(x)
- double x;
-#endif
-{
- double t;
- __int32_t hx,ix;
- __uint32_t lx;
- EXTRACT_WORDS(hx,lx,x);
- 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 */
- SET_HIGH_WORD(x,ix);
- if(ix<0x3fe00000) { /* x < 0.5 */
- t = x+x;
- t = 0.5*log1p(t+t*x/(one-x));
- } else
- t = 0.5*log1p((x+x)/(one-x));
- if(hx>=0) return t; else return -t;
-}
-
-#endif /* defined(_DOUBLE_IS_32BITS) */