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1997-03-16 18:43 Ulrich Drepper <drepper@cygnus.com> * manual/filesys.texi: Add documentation for scandir and alphasort. * math/math.c (fpclassify): Correct stupid typos. * math/libm-test.c: New file. libm test suite by Andreas Jaeger. * nss/nss_files/files-hosts.c: Add gethostbyname2 imlementation. * posix/Makefile (routines): Add bsd-getpgrp. * posix/bsd-getpgrp.c: New file. * posix/unistd.h [__FAVOR_BSD]: Define macro getpgrp which maps calls to __bsd_getpgrp. * sysdeps/generic/getpgrp.c: De-ANSI-declfy. * sysdeps/i386/huge_val.h: New file. ix87 specific infinity values. * sysdeps/m68k/huge_val.h: New file. m68k specific infinity values. * sysdeps/generic/huge_val.h: Remove definition of long double definition. Make it the same as the double definition. * sysdeps/libm-i387/e_acos.S: Fix bug in FPU stack handling. * sysdeps/libm-i387/e_acosf.S: Likewise. * sysdeps/libm-i387/e_acosl.S: Likewise. * sysdeps/libm-i387/e_asin.S: Likewise. * sysdeps/libm-i387/e_asinf.S: Likewise. * sysdeps/libm-i387/e_asinl.S: Likewise. * sysdeps/libm-i387/e_exp.S: Likewise. * sysdeps/libm-i387/e_expf.S: Likewise. * sysdeps/libm-i387/e_expl.S: Likewise. * sysdeps/libm-i387/e_scalbn.S: Likewise. * sysdeps/libm-i387/e_scalbnf.S: Likewise. * sysdeps/libm-i387/e_scalbnl.S: Likewise. * sysdeps/libm-i387/e_log.S: Optimize branch code. * sysdeps/libm-i387/e_logf.S: Likewise. * sysdeps/libm-i387/e_logl.S: Likewise. * sysdeps/libm-i387/e_log10.S: Likewise. * sysdeps/libm-i387/e_log10f.S: Likewise. * sysdeps/libm-i387/e_log10l.S: Likewise. * sysdeps/libm-i387/e_pow.S: Major rewrite to handle special cases. * sysdeps/libm-i387/e_powf.S: Likewise. * sysdeps/libm-i387/e_powl.S: Likewise. * sysdeps/libm-i387/e_expm1.S: Change return value for -inf argument to -1.0. * sysdeps/libm-i387/e_expm1f.S: Likewise. * sysdeps/libm-i387/e_expm1l.S: Likewise. * sysdeps/libm-i387/e_isinfl.c: Return -1 for -inf. * sysdeps/libm-i387/e_logbl.S: Correct return value. Discard first stack element after fxtract. * sysdeps/libm-ieee754/e_atan2l.c: New file. `long double' implementation for atan2 function. * sysdeps/libm-ieee754/k_standard.c: Return NAN for libm not in _SVID_ mode when acos, asin, atan2, log, log10 is called with argument out of range. Add new error case for pow(+0,neg). * sysdeps/libm-ieee754/s_fpclassifyf.c: Correct recognition of NaN and +-inf. * sysdeps/libm-ieee754/s_fpclassifyl.c: Mask out explicit leading digit in stupid 80 bit formats. * sysdeps/libm-ieee754/s_isinf.c: Rewrite to return -1 for -inf. * sysdeps/libm-ieee754/s_isinff.c: Likewise. * sysdeps/libm-ieee754/s_isinfl.c: Likewise. * sysdeps/libm-ieee754/s_scalbnl.c (huge, tiny): Adapt values for long double type. * sysdeps/libm-ieee754/w_atan2.c: Do not raise exception expect when in SVID mode. * sysdeps/libm-ieee754/w_atan2f.c: Likewise. * sysdeps/libm-ieee754/w_atan2l.c: Likewise. * sysdeps/libm-ieee754/w_pow.c: Distinguish error cases for x is +0 or -0. * sysdeps/posix/isfdtype.c: Add cast to prevent warning. * sysdeps/stub/fcntlbits.h: Update copyright. * sysdeps/unix/bsd/fcntlbits.h: Likewise. * sysdeps/unix/bsd/bsd4.4/fcntlbits.h: Likewise. * sysdeps/unix/bsd/sun/sunos4/fcntlbits.h: Likewise. * sysdeps/unix/bsd/ultrix4/fcntlbits.h: Likewise. * sysdeps/unix/common/fcntlbits.h: Likewise. * sysdeps/unix/sysv/fcntlbits.h: Likewise. Define O_FSYNC as alias of O_SYNC. Add BSD compatibility macros FAPPEND, FFSYNC, FNONBLOCK, and FNDELAY. * sysdeps/unix/sysv/irix4/fcntlbits.h: Likewise. * sysdeps/unix/readdir_r.c: Don't copy whole `struct dirent' record, only reclen bytes. * sysdeps/unix/sysv/linux/fcntlbits.h [__USE_GNU]: Add O_READ, O_WRITE and O_NORW. * sysdeps/unix/sysv/linux/alpha/fcntlbits.h: Likewise. * sysdeps/unix/sysv/linux/init-first.h: Add copyright. * sysdeps/unix/sysv/linux/fxstat.c: New file. Rewrite kernel-level struct stat to user-level form. * sysdeps/unix/sysv/linux/lxstat: New file. * sysdeps/unix/sysv/linux/xstat: New file. * sysdeps/unix/sysv/linux/kernel_stat.h: Define struct stat used in kernel. * sysdeps/unix/sysv/linux/statbuf.h (struct stat): Change definition to use prescribed types for elements. (_STAT_VER): Change to value 3. * sysdeps/unix/sysv/linux/alph/statbuf.h: Likewise. * sysdeps/unix/sysv/linux/Dist: Add kernel_stat.h. * sysdeps/unix/sysv/linux/alpha/Dist: Likewise. * time/Makefile: Correct dependencies for test-tz. 1997-03-16 14:59 Philip Blundell <phil@london.uk.eu.org> * resolv/netdb.h: Add prototypes for gai_strerror and getnameinfo (needed for IPv6 basic sockets API). 1997-03-16 15:02 a sun <asun@zoology.washington.edu> * sysdeps/unix/sysv/linux/net/if_ppp.h: Don't use incompatible kernel header. * sysdeps/unix/sysv/linux/net/ppp_defs.h: Likewise. 1997-03-14 17:15 Ulrich Drepper <drepper@cygnus.com> * db/hash/hash_bigkey.c (__big_delete): Don't call __free_ovflpage without testing for last_bfp to be NULL. Reported by fabsoft@fabserver1.zarm.uni-bremen.de. 1997-03-13 11:42 Jim Meyering <meyering@asic.sc.ti.com> * time/mktime.c (TIME_T_MIN): Work around a bug in Cray C 5.0.3.0. 1997-03-14 04:00 Kurt Garloff <garloff@kg1.ping.de> * sysdeps/unix/sysv/linux/fcntlbits.h (O_FSYNC): Make alias for O_SYNC. (FASYNC): Move to __USE_BSD section. Create new macro O_ASYNC. 1997-03-14 02:50 Ulrich Drepper <drepper@cygnus.com> * nis/nss_nis/nis-hosts.c (_nss_nis_gethostbyname2_r): New functions. Compare result for correct address type. (_nss_nis_gethostbyname_r): Use _nss_nis_gethostbyname2_r. Reported by Mirko Streckenbach <mirko@marian.hil.de>. 1997-02-17 01:40 Zlatko Calusic <zcalusic@srce.hr> * time/strptime.c (recursive): Return rp to caller. (strptime_internal): First check for long names, then abbreviated (month & weekday). 1997-03-10 19:44 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig: Remove useless definitions of ASFLAGS-%. * config.make.in (ASFLAGS-.so): Remove. * configure.in: Don't substitute ASFLAGS_SO. * sysdeps/sparc/configure.in: Remove file. * sysdeps/sparc/Makefile (ASFLAGS-.so): Define. 1997-03-11 17:00 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * time/strptime.c (strptime_internal) [case 'Y']: Always subtract 1900 from year, regardless of century. 1997-03-12 05:43 Ulrich Drepper <drepper@cygnus.com> * stdlib/strtod.c (_tens_in_limb) [BITS_PER_MP_LIMB > 32]: Make all numbers unsigned to make buggy gccs happy. Patch by Bryan W. Headley <bheadley@interaccess.com>. * sysdeps/unix/sysv/linux/netinet/ip.h: Add backward-compatibility definitions. Patch by a sun <asun@zoology.washington.edu>. Pretty print header. * Makerules (build-shlib): Also create symlink if library is versioned. based on a patch by H.J. Lu <hjl@gnu.ai.mit.edu>. Remove special rule to libc.so symlink. 1997-03-11 20:16 Andreas Jaeger <aj@arthur.pfalz.de> * manual/math.texi (Domain and Range Errors): Change descriptions according to recent changes for ISO C 9X. 1997-03-11 22:39 Ulrich Drepper <drepper@cygnus.com> * sysdeps/libm-ieee754/k_standard.c (__kernel_standard): Correct return values for acos, asin, and atan2. Reported by Andreas Jaeger <aj@arthur.pfalz.de>. 1997-03-10 18:16 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * ypclnt.c (__yp_bind): Fix possible buffer overflow. 1997-03-10 18:06 Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE> * dirent/alphasort.c (alphasort): Interpret arguments as pointers to pointers to directory entries so that alphasort really can be used as argument for scandir. 1997-03-09 23:33 Andreas Jaeger <aj@arthur.pfalz.de> * string/strdup.c: Declare memcpy if !(_LIBC || STDC_HEADERS) instead of strcpy. 1997-03-10 03:34 Ulrich Drepper <drepper@cygnus.com> * catgets/catgets.c (catopen): Always add NLSPATH to search path for catalogs, not only if the envvar NLSPATH is not available. Reported by Andries.Brouwer@cwi.nl. 1997-03-10 02:46 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (localtime-file): Don't define using installation directory. (inst_localtime-file): New variable. * time/Makefile (installed-localtime-file): Use inst_localtime-file. Reported by Edward Seidl <seidl@janed.com>. 1997-03-10 02:31 H.J. Lu <hjl@gnu.ai.mit.edu> * time/Makefile: Add source files to dependencies for test data. 1997-03-09 22:53 Thorsten Kukuk <kukuk@weber.uni-paderborn.de> * nis/nss_nis/nis-ethers.c: Don't ignore return value of yp_all. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-service.c: Likewise. 1997-03-08 14:37 Miguel de Icaza <miguel@nuclecu.unam.mx> * sysdeps/sparc/dl-machine.h (elf_machine_rela): Upgrade to versioning; Added missing R_SPARC_WDISP30 handling. (RTLD_START): Implement it. * sysdeps/unix/sysv/linux/sparc/brk.c: Fix. * sysdeps/unix/sysv/linux/sparc/start.c: Startup code for Linux/SPARC. 1997-03-02 18:06 Miguel de Icaza <miguel@nuclecu.unam.mx> * sysdeps/sparc/dl-machine.h (RTLD_START): Make arg as expected by the dynamic linker instead of having a new conditional define. Thanks to Richard Henderson for pointing this out. * elf/rtld.c: Remove usage of ELF_ADJUST_ARG. 1997-03-20 20:44 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * sysdeps/mach/hurd/euidaccess.c: Define as __euidaccess and make euidaccess weak alias. 1997-03-07 10:30 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * stdio-common/printf_fphex.c (MIN): New macro. * sysdeps/generic/netinet/in.h: Include <sys/types.h>. * sysdeps/generic/sys/mman.h (msync): Mention third arg. * sysdeps/generic/netinet/in.h: Add definitions for IPv6 basic API. (See change by Philip Blundell on Feb 16, 1997.) 1997-03-05 10:40 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * hurd/hurd.h (vpprintf): Include <stdarg.h>. New declaration. * hurd/set-host.c (_hurd_set_host_config): Cast second arg to __file_name_split. * mach/mach_error.c (mach_error_string_int): Give full prototype. * mach/errstring.c (mach_error_string_int): Likewise. * mach/error_compat.c (__mach_error_map_compat): Likewise. * hurd/vpprintf.c (pwrite, vpprintf): Likewise. * stdio/vasprintf.c (vasprintf): Likewise. * mach/mach/mach_traps.h: Include <mach/kern_return.h>. * mach/spin-solid.c: Include <mach/mach_traps.h>. * mach/spin-solid.c (__spin_lock_solid): Provide arg to swtch_pri. * mach/mach_init.c: Include <mach/mig_support.h>. * mach/mach_error.h (mach_error_string, mach_error, mach_error_type): Always provide prototypes. * mach/mach/error.h (mach_error_fn_t): Comment out declaration; it appears to be entirely unused dead code. * stdio/stdio.h (freopen): Fix spelling error. 1997-03-02 13:38 Miles Bader <miles@gnu.ai.mit.edu> * string/argz.h (__need_error_t): New macro, before including <errno.h> [!__const] (__const): New macro. [!__error_t_defined] (error_t): New typedef. * sysdeps/generic/socketbits.h: Add PF_FILE as synonym for PF_LOCAL * sysdeps/unix/sysv/linux/socketbits.h: Likewise.
87 lines
2.7 KiB
ArmAsm
87 lines
2.7 KiB
ArmAsm
/* ix87 specific implementation of exp(x)-1.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
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Corrections by H.J. Lu (hjl@gnu.ai.mit.edu), 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Using: e^x - 1 = 2^(x * log2(e)) - 1 */
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#include <machine/asm.h>
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#ifdef __ELF__
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.section .rodata
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#else
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.text
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#endif
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.align ALIGNARG(4)
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ASM_TYPE_DIRECTIVE(minus1,@object)
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minus1: .double -1.0
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ASM_SIZE_DIRECTIVE(minus1)
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ASM_TYPE_DIRECTIVE(one,@object)
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one: .double 1.0
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ASM_SIZE_DIRECTIVE(one)
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ASM_TYPE_DIRECTIVE(l2e,@object)
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l2e: .tfloat 1.442695040888963407359924681002
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ASM_SIZE_DIRECTIVE(l2e)
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#ifdef PIC
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#define MO(op) op##@GOTOFF(%edx)
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#else
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#define MO(op) op
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#endif
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.text
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ENTRY(__expm1)
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fldl 4(%esp) // x
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fxam // Is NaN or +-Inf?
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fstsw %ax
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#ifdef PIC
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call 1f
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1: popl %edx
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addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
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#endif
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movb $0x45, %ch
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andb %ah, %ch
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cmpb $0x05, %ch
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je 2f // Is +-Inf, jump.
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fldt MO(l2e) // log2(e) : x
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fmulp // log2(e)*x
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fld %st // log2(e)*x : log2(e)*x
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frndint // int(log2(e)*x) : log2(e)*x
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fsubr %st, %st(1) // int(log2(e)*x) : fract(log2(e)*x)
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fxch // fract(log2(e)*x) : int(log2(e)*x)
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f2xm1 // 2^fract(log2(e)*x)-1 : int(log2(e)*x)
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fscale // 2^(log2(e)*x)-2^int(log2(e)*x) : int(log2(e)*x)
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fxch // int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
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fldl MO(one) // 1 : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
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fscale // 2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
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fsubrl MO(one) // 1-2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
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fstp %st(1) // 1-2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
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fsubrp %st, %st(1) // 2^(log2(e)*x)
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ret
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2: testl $0x200, %eax // Test sign.
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jz 3f // If positive, jump.
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fstp %st
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fldl MO(minus1) // Set result to -1.0.
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3: ret
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END(__expm1)
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weak_alias (__expm1, expm1)
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