From abfbdde177c3a7155070dda1b2cdc8292054cc26 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 14 Jul 1999 00:54:57 +0000 Subject: Update. --- sysdeps/libm-ieee754/e_atanhl.c | 79 ----------------------------------------- 1 file changed, 79 deletions(-) delete mode 100644 sysdeps/libm-ieee754/e_atanhl.c (limited to 'sysdeps/libm-ieee754/e_atanhl.c') 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; -} -- cgit v1.2.3