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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/tanh.c
parent6f3e22dc48834c1f9633fee843647800cc2d6b79 (diff)
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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/tanh.c')
-rw-r--r--sysdeps/generic/tanh.c99
1 files changed, 0 insertions, 99 deletions
diff --git a/sysdeps/generic/tanh.c b/sysdeps/generic/tanh.c
deleted file mode 100644
index d4923b3418..0000000000
--- a/sysdeps/generic/tanh.c
+++ /dev/null
@@ -1,99 +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[] = "@(#)tanh.c 8.1 (Berkeley) 6/4/93";
-#endif /* not lint */
-
-/* TANH(X)
- * RETURN THE HYPERBOLIC TANGENT 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, 2/11/85, 3/7/85, 3/24/85.
- *
- * Required system supported functions :
- * copysign(x,y)
- * finite(x)
- *
- * Required kernel function:
- * expm1(x) ...exp(x)-1
- *
- * Method :
- * 1. reduce x to non-negative by tanh(-x) = - tanh(x).
- * 2.
- * 0 < x <= 1.e-10 : tanh(x) := x
- * -expm1(-2x)
- * 1.e-10 < x <= 1 : tanh(x) := --------------
- * expm1(-2x) + 2
- * 2
- * 1 <= x <= 22.0 : tanh(x) := 1 - ---------------
- * expm1(2x) + 2
- * 22.0 < x <= INF : tanh(x) := 1.
- *
- * Note: 22 was chosen so that fl(1.0+2/(expm1(2*22)+2)) == 1.
- *
- * Special cases:
- * tanh(NaN) is NaN;
- * only tanh(0)=0 is exact for finite argument.
- *
- * Accuracy:
- * tanh(x) returns the exact hyperbolic tangent of x nealy rounded.
- * In a test run with 1,024,000 random arguments on a VAX, the maximum
- * observed error was 2.22 ulps (units in the last place).
- */
-
-double tanh(x)
-double x;
-{
- static double one=1.0, two=2.0, small = 1.0e-10, big = 1.0e10;
- double expm1(), t, copysign(), sign;
- int finite();
-
-#if !defined(vax)&&!defined(tahoe)
- if(x!=x) return(x); /* x is NaN */
-#endif /* !defined(vax)&&!defined(tahoe) */
-
- sign=copysign(one,x);
- x=copysign(x,one);
- if(x < 22.0)
- if( x > one )
- return(copysign(one-two/(expm1(x+x)+two),sign));
- else if ( x > small )
- {t= -expm1(-(x+x)); return(copysign(t/(two-t),sign));}
- else /* raise the INEXACT flag for non-zero x */
- {big+x; return(copysign(x,sign));}
- else if(finite(x))
- return (sign+1.0E-37); /* raise the INEXACT flag */
- else
- return(sign); /* x is +- INF */
-}