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author | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
commit | a334319f6530564d22e775935d9c91663623a1b4 (patch) | |
tree | b5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/ieee754/ldbl-128ibm/e_acoshl.c | |
parent | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff) | |
download | glibc-a334319f6530564d22e775935d9c91663623a1b4.zip glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.bz2 |
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/e_acoshl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/e_acoshl.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c b/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c deleted file mode 100644 index 00576c7..0000000 --- a/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c +++ /dev/null @@ -1,69 +0,0 @@ -/* @(#)e_acosh.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. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: e_acosh.c,v 1.9 1995/05/12 04:57:18 jtc Exp $"; -#endif - -/* __ieee754_acosh(x) - * Method : - * Based on - * acosh(x) = log [ x + sqrt(x*x-1) ] - * we have - * acosh(x) := log(x)+ln2, if x is large; else - * acosh(x) := log(2x-1/(sqrt(x*x-1)+x)) if x>2; else - * acosh(x) := log1p(t+sqrt(2.0*t+t*t)); where t=x-1. - * - * Special cases: - * acosh(x) is NaN with signal if x<1. - * acosh(NaN) is NaN without signal. - */ - -#include "math.h" -#include "math_private.h" - -#ifdef __STDC__ -static const long double -#else -static long double -#endif -one = 1.0L, -ln2 = 6.93147180559945286227e-01L; /* 0x3FE62E42, 0xFEFA39EF */ - -#ifdef __STDC__ - long double __ieee754_acoshl(long double x) -#else - long double __ieee754_acoshl(x) - long double x; -#endif -{ - long double t; - int64_t hx; - u_int64_t lx; - GET_LDOUBLE_WORDS64(hx,lx,x); - if(hx<0x3ff0000000000000LL) { /* x < 1 */ - return (x-x)/(x-x); - } else if(hx >=0x41b0000000000000LL) { /* x > 2**28 */ - if(hx >=0x7ff0000000000000LL) { /* x is inf of NaN */ - return x+x; - } else - return __ieee754_logl(x)+ln2; /* acosh(huge)=log(2x) */ - } else if (((hx-0x3ff0000000000000LL)|(lx&0x7fffffffffffffffLL))==0) { - return 0.0; /* acosh(1) = 0 */ - } else if (hx > 0x4000000000000000LL) { /* 2**28 > x > 2 */ - t=x*x; - return __ieee754_logl(2.0*x-one/(x+__ieee754_sqrtl(t-one))); - } else { /* 1<x<2 */ - t = x-one; - return __log1p(t+__sqrtl(2.0*t+t*t)); - } -} |