about summary refs log tree commit diff
path: root/sysdeps/generic/expm1.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/expm1.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/expm1.c')
-rw-r--r--sysdeps/generic/expm1.c170
1 files changed, 0 insertions, 170 deletions
diff --git a/sysdeps/generic/expm1.c b/sysdeps/generic/expm1.c
deleted file mode 100644
index 383902a928..0000000000
--- a/sysdeps/generic/expm1.c
+++ /dev/null
@@ -1,170 +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[] = "@(#)expm1.c	8.1 (Berkeley) 6/4/93";
-#endif /* not lint */
-
-/* EXPM1(X)
- * RETURN THE EXPONENTIAL OF X MINUS ONE
- * DOUBLE PRECISION (IEEE 53 BITS, VAX D FORMAT 56 BITS)
- * CODED IN C BY K.C. NG, 1/19/85; 
- * REVISED BY K.C. NG on 2/6/85, 3/7/85, 3/21/85, 4/16/85.
- *
- * Required system supported functions:
- *	scalb(x,n)	
- *	copysign(x,y)	
- *	finite(x)
- *
- * Kernel function:
- *	exp__E(x,c)
- *
- * Method:
- *	1. Argument Reduction: given the input x, find r and integer k such 
- *	   that
- *	                   x = k*ln2 + r,  |r| <= 0.5*ln2 .  
- *	   r will be represented as r := z+c for better accuracy.
- *
- *	2. Compute EXPM1(r)=exp(r)-1 by 
- *
- *			EXPM1(r=z+c) := z + exp__E(z,c)
- *
- *	3. EXPM1(x) =  2^k * ( EXPM1(r) + 1-2^-k ).
- *
- * 	Remarks: 
- *	   1. When k=1 and z < -0.25, we use the following formula for
- *	      better accuracy:
- *			EXPM1(x) = 2 * ( (z+0.5) + exp__E(z,c) )
- *	   2. To avoid rounding error in 1-2^-k where k is large, we use
- *			EXPM1(x) = 2^k * { [z+(exp__E(z,c)-2^-k )] + 1 }
- *	      when k>56. 
- *
- * Special cases:
- *	EXPM1(INF) is INF, EXPM1(NaN) is NaN;
- *	EXPM1(-INF)= -1;
- *	for finite argument, only EXPM1(0)=0 is exact.
- *
- * Accuracy:
- *	EXPM1(x) returns the exact (exp(x)-1) nearly rounded. In a test run with
- *	1,166,000 random arguments on a VAX, the maximum observed error was
- *	.872 ulps (units of 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(ln2hi,  6.9314718055829871446E-1  ,7217,4031,0000,f7d0,   0, .B17217F7D00000)
-vc(ln2lo,  1.6465949582897081279E-12 ,bcd5,2ce7,d9cc,e4f1, -39, .E7BCD5E4F1D9CC)
-vc(lnhuge, 9.4961163736712506989E1   ,ec1d,43bd,9010,a73e,   7, .BDEC1DA73E9010)
-vc(invln2, 1.4426950408889634148E0   ,aa3b,40b8,17f1,295c,   1, .B8AA3B295C17F1)
-
-ic(ln2hi,  6.9314718036912381649E-1,   -1, 1.62E42FEE00000)
-ic(ln2lo,  1.9082149292705877000E-10, -33, 1.A39EF35793C76)
-ic(lnhuge, 7.1602103751842355450E2,     9, 1.6602B15B7ECF2)
-ic(invln2, 1.4426950408889633870E0,     0, 1.71547652B82FE)
-
-#ifdef vccast
-#define	ln2hi	vccast(ln2hi)
-#define	ln2lo	vccast(ln2lo)
-#define	lnhuge	vccast(lnhuge)
-#define	invln2	vccast(invln2)
-#endif
-
-double expm1(x)
-double x;
-{
-	const static double one=1.0, half=1.0/2.0; 
-	double  z,hi,lo,c;
-	int k;
-#if defined(vax)||defined(tahoe)
-	static prec=56;
-#else	/* defined(vax)||defined(tahoe) */
-	static prec=53;
-#endif	/* defined(vax)||defined(tahoe) */
-
-#if !defined(vax)&&!defined(tahoe)
-	if(x!=x) return(x);	/* x is NaN */
-#endif	/* !defined(vax)&&!defined(tahoe) */
-
-	if( x <= lnhuge ) {
-		if( x >= -40.0 ) {
-
-		    /* argument reduction : x - k*ln2 */
-			k= invln2 *x+copysign(0.5,x);	/* k=NINT(x/ln2) */
-			hi=x-k*ln2hi ; 
-			z=hi-(lo=k*ln2lo);
-			c=(hi-z)-lo;
-
-			if(k==0) return(z+__exp__E(z,c));
-			if(k==1)
-			    if(z< -0.25) 
-				{x=z+half;x +=__exp__E(z,c); return(x+x);}
-			    else
-				{z+=__exp__E(z,c); x=half+z; return(x+x);}
-		    /* end of k=1 */
-
-			else {
-			    if(k<=prec)
-			      { x=one-scalb(one,-k); z += __exp__E(z,c);}
-			    else if(k<100)
-			      { x = __exp__E(z,c)-scalb(one,-k); x+=z; z=one;}
-			    else 
-			      { x = __exp__E(z,c)+z; z=one;}
-
-			    return (scalb(x+z,k));  
-			}
-		}
-		/* end of x > lnunfl */
-
-		else 
-		     /* expm1(-big#) rounded to -1 (inexact) */
-		     if(finite(x))  
-			 { ln2hi+ln2lo; return(-one);}
-
-		     /* expm1(-INF) is -1 */
-		     else return(-one);
-	}
-	/* end of x < lnhuge */
-
-	else 
-	/*  expm1(INF) is INF, expm1(+big#) overflows to INF */
-	    return( finite(x) ?  scalb(one,5000) : x);
-}
-
-#undef expm1
-weak_alias (__expm1, expm1)