mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
7e3be507ee
Sat Dec 21 04:14:16 1996 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/common/pause.c: Add missing second argument in call to __sigpause. Reported by a sun <asun@zoology.washington.edu>. * locale/weight.h: Correct handling of collation elements. Reported by Keld Simonsen <keld@dkuug.dk>. * manual/time.texi: Document ^ flag and %P format. * new-malloc/malloc.c: Update from Wolfram Gloger. * nss/nss.h: Reformat copyright. * posix/sched.h: Likewise. * sysdeps/i386/fpu_control.h: Likewise. * sysdeps/unix/sysv/linux/fcntlbits.h: Likewise. * sysdeps/unix/sysv/linux/ioctls.h: Likewise. * sysdeps/unix/sysv/linux/sigcontext.h: Likewise. * sysdeps/unix/sysv/linux/utsnamelen.h: Likewise. * sysdeps/unix/sysv/linux/sys/acct.h: Likewise. * sysvips/sys/msg.h: Likewise. * stdio-common/Makefile (routines): Remove fcloseall. * stdio-common/fcloseall.c: Removed. * stdlib/Makefile (distribute): Add abort-instr.h. * sysdeps/generic/abort-instr.h: New file. * sysdeps/i386/abort-instr.h: New file. * sysdeps/generic/abort.c: Use lock and stage counter to prevent any form of loop. * sysdeps/unix/sysv/linux/timebits.h: Define CLK_TCK as 100. * sysdeps/unix/sysv/linux/alpha/timebits.h: Define CLOCKS_PER_SEC as 1000000. Define CLK_TCK as 1024. * time/time.c (CLK_TCK): Define only if not already set. * time/strftime.c: Don't use `isdigit' when computing field width from string since the locale might have more than one digit block. Fri Dec 20 12:38:14 1996 Darrel Hankerson <hankedr@mail.auburn.edu> * posix/getopt.c (in -W option handling): Return when optind == argc. Thu Dec 19 14:24:50 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * nis/nss_nis/nis-alias.c (_nss_nis_parse_aliasent): Add const to type of KEY. * nis/nss_compat/compat-grp.c: Include the declaration of the file parser. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/nss_nis/nis-ethers.c: Likewise. * nis/nss_nis/nis-grp.c: Likewise. * nis/nss_nis/nis-network.c: Likewise. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-pwd.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-spwd.c: Likewise. * nis/nss_compat/compat-grp.c (getgrent_next_nis, getgrent_next_file): Pass the correct type for the buffer to the parser function. * nis/nss_compat/compat-pwd.c (getpwent_next_netgr, getpwent_next_nis, getpwent_next_file): Likewise. * nis/nss_compat/compat-spwd.c (getspent_next_netgr, getspent_next_nis, getspent_next_file): Likewise. * nis/nss_nis/nis-ethers.c (internal_nis_getetherent_r, _nss_nis_getethernam_r, _nss_nis_getetherbyaddr_r): Likewise. * nis/nss_nis/nis-grp.c (internal_nis_getgrent_r, _nss_nis_getgrnam_r, _nss_nis_getgrgid_r): Likewise. * nis/nss_nis/nis-network.c (internal_nis_getnetent_r, _nss_nis_getnetbyname_r, _nss_nis_getnetbyaddr_r): Likewise. * nis/nss_nis/nis-proto.c (internal_nis_getprotoent_r, _nss_nis_getprotobyname_r, _nss_nis_getprotobynumber_r): Likewise. * nis/nss_nis/nis-pwd.c (internal_nis_getpwent_r, _nss_nis_getpwnam_r, _nss_nis_getpwuid_r): Likewise. * nis/nss_nis/nis-rpc.c (internal_nis_getrpcent_r, _nss_nis_getrpcbynumber_r): Likewise. * nis/nss_nis/nis-spwd.c (internal_nis_getspent_r, _nss_nis_getspnam_r): Likewise. Thu Dec 19 13:37:16 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/m68k/setjmp.c: New file.
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/* FPU control word bits. i387 version.
|
|
Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Olaf Flebbe.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _FPU_CONTROL_H
|
|
#define _FPU_CONTROL_H 1
|
|
|
|
/* Here is the dirty part. Settup up your 387 through the control word
|
|
* (cw) register.
|
|
*
|
|
* 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
|
|
* | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
|
|
*
|
|
* IM: Invalid operation mask
|
|
* DM: Denormalized operand mask
|
|
* ZM: Zero-divide mask
|
|
* OM: Overflow mask
|
|
* UM: Underflow mask
|
|
* PM: Precision (inexact result) mask
|
|
*
|
|
* Mask bit is 1 means no interrupt.
|
|
*
|
|
* PC: Precision control
|
|
* 11 - round to extended precision
|
|
* 10 - round to double precision
|
|
* 00 - round to single precision
|
|
*
|
|
* RC: Rounding control
|
|
* 00 - rounding to nearest
|
|
* 01 - rounding down (toward - infinity)
|
|
* 10 - rounding up (toward + infinity)
|
|
* 11 - rounding toward zero
|
|
*
|
|
* IC: Infinity control
|
|
* That is for 8087 and 80287 only.
|
|
*
|
|
* The hardware default is 0x037f. I choose 0x1372.
|
|
*/
|
|
|
|
#include <features.h>
|
|
|
|
/* masking of interrupts */
|
|
#define _FPU_MASK_IM 0x01
|
|
#define _FPU_MASK_DM 0x02
|
|
#define _FPU_MASK_ZM 0x04
|
|
#define _FPU_MASK_OM 0x08
|
|
#define _FPU_MASK_UM 0x10
|
|
#define _FPU_MASK_PM 0x20
|
|
|
|
/* precision control */
|
|
#define _FPU_EXTENDED 0x300
|
|
#define _FPU_DOUBLE 0x200 /* fdlibm requires double precision */
|
|
#define _FPU_SINGLE 0x0 /* DO NOT USE */
|
|
|
|
/* rounding control */
|
|
#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
|
|
#define _FPU_RC_DOWN 0x400
|
|
#define _FPU_RC_UP 0x800
|
|
#define _FPU_RC_ZERO 0xC00
|
|
|
|
#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
|
|
|
|
|
|
/* The fdlibm code requires strict IEEE double precision arithmetic,
|
|
and no interrupts for exceptions, rounding to nearest. */
|
|
|
|
#define _FPU_DEFAULT 0x137f
|
|
|
|
/* IEEE: same as above, but exceptions */
|
|
#define _FPU_IEEE 0x137f
|
|
|
|
/* Type of the control word. */
|
|
typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
|
|
|
|
/* Macros for accessing the hardware control word. */
|
|
#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
|
|
#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
|
|
|
|
/* Default control word set at startup. */
|
|
extern fpu_control_t __fpu_control;
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Called at startup. It can be used to manipulate fpu control register. */
|
|
extern void __setfpucw __P ((fpu_control_t));
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* fpu_control.h */
|