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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/e_atanhl.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
Update.
Diffstat (limited to 'sysdeps/libm-ieee754/e_atanhl.c')
-rw-r--r--sysdeps/libm-ieee754/e_atanhl.c79
1 files changed, 0 insertions, 79 deletions
diff --git a/sysdeps/libm-ieee754/e_atanhl.c b/sysdeps/libm-ieee754/e_atanhl.c
deleted file mode 100644
index fdcd1e9fe8..0000000000
--- a/sysdeps/libm-ieee754/e_atanhl.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/* s_atanhl.c -- long double version of s_atan.c.
- * Conversion to long double by Ulrich Drepper,
- * Cygnus Support, drepper@cygnus.com.
- */
-
-/*
- * ====================================================
- * 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.
- * ====================================================
- */
-
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: $";
-#endif
-
-/* __ieee754_atanhl(x)
- * Method :
- * 1.Reduced x to positive by atanh(-x) = -atanh(x)
- * 2.For x>=0.5
- * 1 2x x
- * atanhl(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------)
- * 2 1 - x 1 - x
- *
- * For x<0.5
- * atanhl(x) = 0.5*log1pl(2x+2x*x/(1-x))
- *
- * Special cases:
- * atanhl(x) is NaN if |x| > 1 with signal;
- * atanhl(NaN) is that NaN with no signal;
- * atanhl(+-1) is +-INF with signal.
- *
- */
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const long double one = 1.0, huge = 1e4900L;
-#else
-static long double one = 1.0, huge = 1e4900L;
-#endif
-
-#ifdef __STDC__
-static const long double zero = 0.0;
-#else
-static double long zero = 0.0;
-#endif
-
-#ifdef __STDC__
- long double __ieee754_atanhl(long double x)
-#else
- long double __ieee754_atanhl(x)
- long double x;
-#endif
-{
- long double t;
- int32_t ix;
- u_int32_t se,i0,i1;
- GET_LDOUBLE_WORDS(se,i0,i1,x);
- ix = se&0x7fff;
- if ((ix+((((i0&0x7fffffff)|i1)|(-((i0&0x7fffffff)|i1)))>>31))>0x3fff)
- /* |x|>1 */
- return (x-x)/(x-x);
- if(ix==0x3fff)
- return x/zero;
- if(ix<0x3fe3&&(huge+x)>zero) return x; /* x<2**-28 */
- SET_LDOUBLE_EXP(x,ix);
- if(ix<0x3ffe) { /* x < 0.5 */
- t = x+x;
- t = 0.5*__log1pl(t+t*x/(one-x));
- } else
- t = 0.5*__log1pl((x+x)/(one-x));
- if(se<=0x7fff) return t; else return -t;
-}