about summary refs log tree commit diff
path: root/sysdeps/generic/cosh.c
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1996-06-07 21:18:34 +0000
committerRoland McGrath <roland@gnu.org>1996-06-07 21:18:34 +0000
commitbf668fc8f06ccba22b4927fba337efdabbe06ac1 (patch)
tree0802b22479d466bedf33fe16531f69b73fa67c38 /sysdeps/generic/cosh.c
parent6f3e22dc48834c1f9633fee843647800cc2d6b79 (diff)
downloadglibc-bf668fc8f06ccba22b4927fba337efdabbe06ac1.tar.gz
glibc-bf668fc8f06ccba22b4927fba337efdabbe06ac1.tar.xz
glibc-bf668fc8f06ccba22b4927fba337efdabbe06ac1.zip
Fri Jun 7 16:48:13 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
	* sysdeps/unix/sysv/linux/i386/Dist: New file, list sys/perm.h and
	sys/vm86.h.

	Removed old math code no longer used since the fdlibm integration.
	* sysdeps/stub/acos.c: File removed.
	* sysdeps/stub/asin.c: File removed.
	* sysdeps/stub/atan2.c: File removed.
	* sysdeps/stub/cosh.c: File removed.
	* sysdeps/stub/exp.c: File removed.
	* sysdeps/stub/fmod.c: File removed.
	* sysdeps/stub/frexp.c: File removed.
	* sysdeps/stub/log.c: File removed.
	* sysdeps/stub/log10.c: File removed.
	* sysdeps/stub/sinh.c: File removed.
	* sysdeps/stub/tan.c: File removed.
	* sysdeps/stub/tanh.c: File removed.
	* sysdeps/generic/acos.c: File removed.
	* sysdeps/generic/acosh.c: File removed.
	* sysdeps/generic/asin.c: File removed.
	* sysdeps/generic/asinh.c: File removed.
	* sysdeps/generic/atan.c: File removed.
	* sysdeps/generic/atan2.c: File removed.
	* sysdeps/generic/atanh.c: File removed.
	* sysdeps/generic/cabs.c: File removed.
	* sysdeps/generic/ceil.c: File removed.
	* sysdeps/generic/copysign.c: File removed.
	* sysdeps/generic/cosh.c: File removed.
	* sysdeps/generic/exp.c: File removed.
	* sysdeps/generic/expm1.c: File removed.
	* sysdeps/generic/fabs.c: File removed.
	* sysdeps/generic/floor.c: File removed.
	* sysdeps/generic/fmod.c: File removed.
	* sysdeps/generic/frexp.c: File removed.
	* sysdeps/generic/hypot.c: File removed.
	* sysdeps/generic/infnan.c: File removed.
	* sysdeps/generic/isnan.c: File removed.
	* sysdeps/generic/ldexp.c: File removed.
	* sysdeps/generic/log.c: File removed.
	* sysdeps/generic/log10.c: File removed.
	* sysdeps/generic/log1p.c: File removed.
	* sysdeps/generic/modf.c: File removed.
	* sysdeps/generic/pow.c: File removed.
	* sysdeps/generic/rint.c: File removed.
	* sysdeps/generic/sinh.c: File removed.
	* sysdeps/generic/tan.c: File removed.
	* sysdeps/generic/tanh.c: File removed.
	* sysdeps/ieee754/cabs.c: File removed.
	* sysdeps/ieee754/copysign.c: File removed.
	* sysdeps/ieee754/frexp.c: File removed.
	* sysdeps/ieee754/hypot.c: File removed.
	* sysdeps/ieee754/infnan.c: File removed.
	* sysdeps/ieee754/ldexp.c: File removed.
	* sysdeps/ieee754/log10.c: File removed.

	* posix/Makefile (headers): Add schedbits.h.

	* math/Makefile (elided-routines): Add long double routines.

Fri Jun  7 09:11:17 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>

	* sysdeps/unix/sysv/linux/Dist: Add sys/sysinfo.h, sys/mount.h,
	sys/kdaemon.h, sys/io.h, sys/mount.h, sysctl.c.

	* gmon/Makefile (distribute): Add profil-counter.h.

	* sysdeps/unix/sysv/linux/alpha/Dist: New file.

	* sysdeps/unix/Dist: Add s-proto.S.

	* sysdeps/unix/common/mk-local_lim.c: Obsolete file removed.

	* Make-dist (+sysdep-tsrcs): Get all syscalls.list files too.

	* csu/Makefile (distribute): Add start.c.

	* elf/Makefile (distribute): Add dl-machine.h.

	* sysdeps/alpha/Dist: Add _mcount.S.

	* sysdeps/alpha/Makefile (sysdep_routines): Append instead of
	resetting; don't add bb_init_func.

	* string/Makefile (routines): Add strerror_r.
	* string/string.h (strerror_r): Use int for BUFLEN arg.

	* Makefile (distribute): Add shlib-versions.

	* po/Makefile (distribute): Add SYS_libc.pot.

	* misc/Makefile (routines): Add lsearch.

	* manual/lang.texi (Consistency Checking): Merge in assert_perror defn
	and other changes inadvertently made to the obsolete assert.texi.
	* manual/assert.texi: File removed.

	* mach/mach_syscalls.c: Obsolete file removed.
	* mach/mach_syscalls.h: Likewise.
	* mach/mach_traps.S: Likewise.
	* mach/msg_destroy.c: Likewise.
	* mach/vm_page_size.c: Likewise.

	* locale/Makefile (distribute): Add weight.h, charset.h.

	* Makefile (distribute): Add version.h.

	* hurd/Makefile (headers): Add hurd/ioctl.h.
	(distribute): Add intr-rpc.d, intr-rpc.h, faultexc.defs.

	* csu/Makefile (distribute): Add gmon-start.c.

	* Makefile (distribute): Add config.h.in.

	sysdeps/m68k/fpu/e_atanhl.c, sysdeps/m68k/fpu/e_coshl.c: New files.
Diffstat (limited to 'sysdeps/generic/cosh.c')
-rw-r--r--sysdeps/generic/cosh.c133
1 files changed, 0 insertions, 133 deletions
diff --git a/sysdeps/generic/cosh.c b/sysdeps/generic/cosh.c
deleted file mode 100644
index e2b30731b8..0000000000
--- a/sysdeps/generic/cosh.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 1985, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)cosh.c	8.1 (Berkeley) 6/4/93";
-#endif /* not lint */
-
-/* COSH(X)
- * RETURN THE HYPERBOLIC COSINE OF X
- * DOUBLE PRECISION (VAX D format 56 bits, IEEE DOUBLE 53 BITS)
- * CODED IN C BY K.C. NG, 1/8/85; 
- * REVISED BY K.C. NG on 2/8/85, 2/23/85, 3/7/85, 3/29/85, 4/16/85.
- *
- * Required system supported functions :
- *	copysign(x,y)
- *	scalb(x,N)
- *
- * Required kernel function:
- *	exp(x) 
- *	exp__E(x,c)	...return exp(x+c)-1-x for |x|<0.3465
- *
- * Method :
- *	1. Replace x by |x|. 
- *	2. 
- *		                                        [ exp(x) - 1 ]^2 
- *	    0        <= x <= 0.3465  :  cosh(x) := 1 + -------------------
- *			       			           2*exp(x)
- *
- *		                                   exp(x) +  1/exp(x)
- *	    0.3465   <= x <= 22      :  cosh(x) := -------------------
- *			       			           2
- *	    22       <= x <= lnovfl  :  cosh(x) := exp(x)/2 
- *	    lnovfl   <= x <= lnovfl+log(2)
- *				     :  cosh(x) := exp(x)/2 (avoid overflow)
- *	    log(2)+lnovfl <  x <  INF:  overflow to INF
- *
- *	Note: .3465 is a number near one half of ln2.
- *
- * Special cases:
- *	cosh(x) is x if x is +INF, -INF, or NaN.
- *	only cosh(0)=1 is exact for finite x.
- *
- * Accuracy:
- *	cosh(x) returns the exact hyperbolic cosine of x nearly rounded.
- *	In a test run with 768,000 random arguments on a VAX, the maximum
- *	observed error was 1.23 ulps (units in the last place).
- *
- * Constants:
- * The hexadecimal values are the intended ones for the following constants.
- * The decimal values may be used, provided that the compiler will convert
- * from decimal to binary accurately enough to produce the hexadecimal values
- * shown.
- */
-
-#include "mathimpl.h"
-
-vc(mln2hi, 8.8029691931113054792E1   ,0f33,43b0,2bdb,c7e2,   7, .B00F33C7E22BDB)
-vc(mln2lo,-4.9650192275318476525E-16 ,1b60,a70f,582a,279e, -50,-.8F1B60279E582A)
-vc(lnovfl, 8.8029691931113053016E1   ,0f33,43b0,2bda,c7e2,   7, .B00F33C7E22BDA)
-
-ic(mln2hi, 7.0978271289338397310E2,    10, 1.62E42FEFA39EF)
-ic(mln2lo, 2.3747039373786107478E-14, -45, 1.ABC9E3B39803F)
-ic(lnovfl, 7.0978271289338397310E2,     9, 1.62E42FEFA39EF)
-
-#ifdef vccast
-#define   mln2hi    vccast(mln2hi)
-#define   mln2lo    vccast(mln2lo)
-#define   lnovfl    vccast(lnovfl)
-#endif
-
-#if defined(vax)||defined(tahoe)
-static max = 126                      ;
-#else	/* defined(vax)||defined(tahoe) */
-static max = 1023                     ;
-#endif	/* defined(vax)||defined(tahoe) */
-
-double cosh(x)
-double x;
-{	
-	static const double half=1.0/2.0,
-		one=1.0, small=1.0E-18; /* fl(1+small)==1 */
-	double t;
-
-#if !defined(vax)&&!defined(tahoe)
-	if(x!=x) return(x);	/* x is NaN */
-#endif	/* !defined(vax)&&!defined(tahoe) */
-	if((x=copysign(x,one)) <= 22)
-	    if(x<0.3465) 
-		if(x<small) return(one+x);
-		else {t=x+__exp__E(x,0.0);x=t+t; return(one+t*t/(2.0+x)); }
-
-	    else /* for x lies in [0.3465,22] */
-	        { t=exp(x); return((t+one/t)*half); }
-
-	if( lnovfl <= x && x <= (lnovfl+0.7)) 
-        /* for x lies in [lnovfl, lnovfl+ln2], decrease x by ln(2^(max+1)) 
-         * and return 2^max*exp(x) to avoid unnecessary overflow 
-         */
-	    return(scalb(exp((x-mln2hi)-mln2lo), max)); 
-
-	else 
-	    return(exp(x)*half);	/* for large x,  cosh(x)=exp(x)/2 */
-}