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1997-07-11 03:00 Ulrich Drepper <drepper@cygnus.com> * inet/inet_ntoa.c: Prevent looking for thread data key if we found one. * signal/sigandset.c: Include stddef.h to get NULL defined. * signal/sigisempty.c: Likewise. * signal/sigorset.c: Likewise. * sysdeps/stub/if_index.h: Likewise. * wcsmbs/wcstod_l.c: Include locale.h to get __locale_t defined. * wcsmbs/wcstof_l.c: Likewise. * wcsmbs/wcstol_l.c: Likewise. * wcsmbs/wcstold_l.c: Likewise. * wcsmbs/wcstoll_l.c: Likewise. * wcsmbs/wcstoul_l.c: Likewise. * wcsmbs/wcstoull_l.c: Likewise. Reported by Marcus G. Daniels <marcus@cathcart.sysc.pdx.edu>. * stdio-common/snprintf.c: Use ISO C function definition form. * sysdeps/stub/libc-lock.h: Don't define __libc_key_create and __libc_setspecific as empty macros since they are used as function with return value. Reported by Andreas Jaeger. 1997-07-10 Marcus G. Daniels <marcus@cathcart.sysc.pdx.edu> * sysdeps/mach/hurd/select.c (__select): Need bit count for MACH_MSG_TYPE_INTEGER_T. 1997-07-08 10:12 Fila Kolodny <fila@ibi.com> * sysdeps/i370/Implies: New file for i370-ibm-mvs port. * sysdeps/mvs/Implies: Likewise. 1997-07-09 23:06 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/Makefile: Add new source files. * nis/nis_intern.h: Add new internal functions. * nis/rpcsvc/nislib.h: Likewise. * nis/lckcache.c: New. * nis/nis_cache.c: New, dummy functions in the moment. * nis/nis_util.c: New. * nis/nisplus-parser.h: New. * nis/nss_nisplus/nisplus-parser.c: New. * nis/rpcsvc/nis_cache.h: New. * nis/rpcsvc/nis_cache.x: New. * nis/nss_compat/compat-grp.c: Matches Solaris behaviour now. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/nss_nisplus/nisplus-alias.c: Likewise. * nis/nss_nisplus/nisplus-ethers.c: Likewise. * nis/nss_nisplus/nisplus-grp.c: Likewise. * nis/nss_nisplus/nisplus-hosts.c: Likewise. * nis/nss_nisplus/nisplus-netgrp.c: Likewise. * nis/nss_nisplus/nisplus-network.c: Likewise. * nis/nss_nisplus/nisplus-proto.c: Likewise. * nis/nss_nisplus/nisplus-publickey.c: Likewise. * nis/nss_nisplus/nisplus-pwd.c: Likewise. * nis/nss_nisplus/nisplus-rpc.c: Likewise. * nis/nss_nisplus/nisplus-service.c: Likewise. * nis/nss_nisplus/nisplus-spwd.c: Likewise. * nis/nss_nis/nis-publickey.c: Remove libc-lock.h include. * nis/nis_intern.c: Removed. * nis/nis_call.c: Complete rewrite. * nis/nis_lookup.c: Likewise. * nis/nis_table.c: Likewise. * nis/libnsl.map: Add missing symbols. * nis/nis_print.c: Fix nis_print_link. * nis/nis_subr.c: Fix nis_getnames. 1997-07-09 07:19 H.J. Lu <hjl@gnu.ai.mit.edu> * posix/execvp.c (execvp): Handle ESTALE. 1997-07-10 13:54 Ulrich Drepper <drepper@cygnus.com> * posix/regex.c: Make CHAR_SET_SIZE definition always available, even if SYNTAX_TABLE is defined. Patch by Akim Demaille <demaille@inf.enst.fr>. 1997-07-09 08:16 H.J. Lu <hjl@gnu.ai.mit.edu> * libio/fileops.c (_IO_file_underflow): Adjust pointers before calling _IO_SYSREAD (). 1997-07-07 22:54 Zack Weinberg <zack@rabi.phys.columbia.edu> * sysdeps/sparc/divrem.m4: Eliminate use of "DEFS.h" (sysdep.h does the same job). * sysdeps/sparc/alloca.S: Likewise. * sysdeps/sparc/dotmul.S: Likewise. * sysdeps/sparc/udiv_qrnnd.S: Likewise. * sysdeps/sparc/rem.S: Regenerated. * sysdeps/sparc/sdiv.S: Regenerated. * sysdeps/sparc/udiv.S: Regenerated. * sysdeps/sparc/urem.S: Regenerated. * sysdeps/sparc/DEFS.h: Removed. * sysdeps/sparc/elf/DEFS.h: Removed. * sysdeps/sparc/Dist: Don't distribute DEFS.h. * sysdeps/unix/sparc/sysdep.h: Use 4 byte alignment. Add .type directive #ifdef HAVE_ELF. Minor format changes. * sysdeps/alpha/DEFS.h: Removed. * sysdeps/alpha/Dist: Don't distribute DEFS.h. 1997-07-07 19:03 H.J. Lu <hjl@gnu.ai.mit.edu> * math/test-fenv.c (feenv_nomask_test): Move fesetenv (FE_NOMASK_ENV) after fork () to work with SMP. * sysdeps/i386/fpu_control.h (_FPU_IEEE): Fix comment. 1997-07-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * libc.map: Add _IO_peekc_locked. 1997-07-07 15:45 Fila Kolodny <fila@ibi.com> * Makeconfig: Add dbobjdir to rpath-link analogous to nssobjdir. 1997-07-08 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/feholdexcpt.c: Shift the exception mask in the right position. * sysdeps/m68k/fpu/fesetenv.c (fesetenv): Likewise. 1997-07-08 13:59 Ulrich Drepper <drepper@cygnus.com> * time/strftime.c (spaces, zeroes): Handle broken SGI compiler. Patch by Richard Stallman <rms@gnu.ai.mit.edu>.
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/* FPU control word bits. i387 version.
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Copyright (C) 1993, 1995, 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 Olaf Flebbe.
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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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#ifndef _FPU_CONTROL_H
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#define _FPU_CONTROL_H 1
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/* Here is the dirty part. Settup up your 387 through the control word
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* (cw) register.
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*
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* 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
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* | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
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*
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* IM: Invalid operation mask
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* DM: Denormalized operand mask
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* ZM: Zero-divide mask
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* OM: Overflow mask
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* UM: Underflow mask
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* PM: Precision (inexact result) mask
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*
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* Mask bit is 1 means no interrupt.
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*
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* PC: Precision control
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* 11 - round to extended precision
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* 10 - round to double precision
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* 00 - round to single precision
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*
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* RC: Rounding control
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* 00 - rounding to nearest
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* 01 - rounding down (toward - infinity)
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* 10 - rounding up (toward + infinity)
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* 11 - rounding toward zero
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*
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* IC: Infinity control
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* That is for 8087 and 80287 only.
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*
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* The hardware default is 0x037f. I choose 0x1372.
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*/
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#include <features.h>
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/* masking of interrupts */
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#define _FPU_MASK_IM 0x01
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#define _FPU_MASK_DM 0x02
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#define _FPU_MASK_ZM 0x04
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#define _FPU_MASK_OM 0x08
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#define _FPU_MASK_UM 0x10
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#define _FPU_MASK_PM 0x20
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/* precision control */
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#define _FPU_EXTENDED 0x300
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#define _FPU_DOUBLE 0x200 /* fdlibm requires double precision */
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#define _FPU_SINGLE 0x0 /* DO NOT USE */
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/* rounding control */
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#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
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#define _FPU_RC_DOWN 0x400
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#define _FPU_RC_UP 0x800
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#define _FPU_RC_ZERO 0xC00
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#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
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/* The fdlibm code requires strict IEEE double precision arithmetic,
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and no interrupts for exceptions, rounding to nearest. */
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#define _FPU_DEFAULT 0x137f
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/* IEEE: same as above. */
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#define _FPU_IEEE 0x137f
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/* Type of the control word. */
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typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
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/* Macros for accessing the hardware control word. */
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#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
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#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
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/* Default control word set at startup. */
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extern fpu_control_t __fpu_control;
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__BEGIN_DECLS
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/* Called at startup. It can be used to manipulate fpu control register. */
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extern void __setfpucw __P ((fpu_control_t));
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__END_DECLS
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#endif /* fpu_control.h */
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