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1997-08-14 03:14 Ulrich Drepper <drepper@cygnus.com> * elf/dl-minimal.c: Don't use relative #include paths. (malloc): Don't try to initialize _dl_pagesize, it already is. (__sigjmp_save, longjmp): Reformat. * sysdeps/generic/dl-sysdep.c: Implement _dl_show_auxv function to show content of auxiliary array. (_dl_sysdep_start): Remember start of auxiliary vector. * sysdeps/mach/hurd/dl-sysdep.c: (_dl_show_auxv): New dummy function. * elf/link.h: Add prototype for _dl_show_auxv. * elf/rtld.c (dl_main): Call _dl_show_auxv if LD_SHOW_AUXV envvar is present. * libio/iofdopen.c: Better prepare for use in libstdc++. * libio/iofflush.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofopen.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogets.c: Likewise. * libio/iopopen.c: Likewise. * libio/ioputs.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * manual/creature.texi: Mention _XOPEN_SOURCE_EXTENDED in correct place. * manual/math.texi: Add comment to sincos decsription to say it's a GNU extension. Fix description of random function. * posix/fnmatch.h: Recognize Windog by _WINDOWS32 not WIN32. * posix/glob.c: Likewise. Handle stupid system headers on SunOS. Add casts for all __alloca calls. * posix/glob.h: Recognize Windog by _WINDOWS32 not WIN32. Declare additional GLOB_* constants also if _GNU_SOURCE is defined. Patches by Paul D. Smith <psmith@BayNetworks.COM>. * stdio-common/_itoa.c: Don't use relateive #include paths. * sysdeps/i386/fpu/bits/mathinline.h: Enable optimizations even for gcc 2.7. (atan): Loading 1.0 from memory does not pay off. (asinh): Fix typo. 1997-08-13 09:44 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/stub/accept.c: Use socklen_t where necessary. * sysdeps/stub/bind.c: Likewise. * sysdeps/stub/connect.c: Likewise. * sysdeps/stub/getsockname.c: Likewise. * sysdeps/stub/getsockopt.c: Likewise. * sysdeps/stub/recvfrom.c: Likewise. * sysdeps/stub/sendto.c: Likewise. * sysdeps/stub/setsockopt.c: Likewise. 1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * io/ftw.c (object_compare): Avoid memcmp when comparing scalar types. 1997-08-12 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * math/libm-test.c (cbrt_test): Add epsilon for long double to `cbrt (-0.001)'. 1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/stub/bits/string.h: Fix comment. 1997-08-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/Makefile (routines): Remove dl-version. (dl-routines): Add it here instead. This removes dead code from libc.so. 1997-08-12 17:17 Wolfram Gloger <wmglo@dent.med.uni-muenchen.de> * malloc/thread-m.h (thread_atfork, thread_atfork_static): New macros to encapsulate pthread_atfork's functionality. * malloc/malloc.c (ptmalloc_lock_all, ptmalloc_unlock_all): New functions, registered via thread_atfork in the initialization routine or via thread_atfork_static in global scope. This ensures a consistent state of all locks across fork(). 1997-08-11 23:00:32 1997 Mark Kettenis <kettenis@phys.uva.nl> * login/programs/xtmp.c (compare_entry): Partially undo patch made by Klaus Espenlaub. There was no xtmp/utmp typo. Added comment to cclarify this. * login/programs/xtmp.h: Likewise. * posix/getopt.c: Recognize Windog by _WINDOWS32 not WIN32. Patch by Paul D. Smith <psmith@BayNetworks.COM>. 1997-08-12 13:51 Ulrich Drepper <drepper@cygnus.com> * login/getutid.c: Rename to __getutid and make getutid and getutxid weak aliases. Patch by ir. Mark M._Kettenis <kettenis@phys.uva.nl>. 1997-08-11 23:55 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/Makefile [subdir=misc] (sysdep_headers): Add bits/mman.h. 1997-08-11 08:51:21 1997 H.J. Lu <hjl@gnu.ai.mit.edu> * stdlib/fmtmsg.c (fmtmsg): Add static to __libc_once_define macro. * libc.map (__progname_full, __progname): Added. 1997-08-04 08:31 H.J. Lu <hjl@gnu.ai.mit.edu> * sysdeps/unix/sysv/linux/if_index.c (if_nametoindex): Return 0 if SIOGIFINDEX is not defined. (if_indextoname): Initialize "result" to NULL. (if_nametoindex, if_nameindex): Fix ENOSYS setting. 1997-08-11 11:58 Richard Henderson <rth@cygnus.com> Sparc ISO C 9x exception handling: * sysdeps/sparc/fpu/bits/mathdef.h: New file. * sysdeps/sparc/fpu/fclrexcpt.c: New file. * sysdeps/sparc/fpu/fegetenv.c: New file. * sysdeps/sparc/fpu/fegetround.c: New file. * sysdeps/sparc/fpu/feholdexcpt.c: New file. * sysdeps/sparc/fpu/fesetenv.c: New file. * sysdeps/sparc/fpu/fesetround.c: New file. * sysdeps/sparc/fpu/feupdateenv.c: New file. * sysdeps/sparc/fpu/fgetexcptflg.c: New file. * sysdeps/sparc/fpu/fraiseexcpt.c: New file. * sysdeps/sparc/fpu/fsetexcptflg.c: New file. * sysdeps/sparc/fpu/ftestexcept.c: New file. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: New file. * sysdeps/sparc/sparc64/fpu/bits/fenv.h: New file. 1997-08-11 11:58 Richard Henderson <rth@cygnus.com> Sparc64 merge: * configure.in: Change up subdirectories, rename sparc8->sparcv8. * csu/Makefile: Nuke need-nopic-initfini bits. The problem was that sparc64 ld did not recognize pic relocs at all. * elf/dl-deps.c: Include <string.h>. * elf/do-rel.h (elf_dynamic_do_rel): Take reloc address and size directly instead of the DT names to get them from. * elf/dynamic-link.h (_ELF_DYNAMIC_DO_RELOC): New macro distilled from ELF_DYNAMIC_DO_REL{,A}. Define a second version that accounts for the possibility that DT_RELA and DT_JMPPLT overlap, as such is the case on the Sparc. * elf/elf.h: Stub out Elf64_Ver*, and make them the same as the Elf32_Ver* bits. The linker does not even know to differentiate between the word sizes. Someone should examine this and figure out what the proper sizes of things should be for 64-bit hosts before the sparc64 libraries are distributed. * shlib-versions: Rename sparc64 ld.so to not conflict with sparc32 on the same machine. Move old sysdeps/sparc contents to sysdeps/sparc/sparc32, rename sparc8 subdir to sparcv8, move sysdeps/sparc64 content to sysdeps/sparc/sparc64. Same for sysdeps/unix/sysv/linux/sparc. * sysdeps/sparc/Implies: Do ieee754 here. * sysdeps/sparc/configure.in: Move from sparc32/. * sysdeps/sparc/sparc32/Implies: Do wordsize here. * sysdeps/sparc/sparc64/Implies: Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_load_address): Use uninitialized .got to find load address instead of AT_BASE, as the later does not exist when running ld.so directly. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Move from ../. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Clean up PIC support. * sysdeps/sparc/sparc64/Makefile (sysdep_routines): Add s_finitel and s_signbitl for stdio. * sysdeps/sparc/sparc64/configure.in: Remove, we no longer need nopic_initfini. * sysdeps/sparc/sparc64/bsd-_setjmp.S: Remove. * sysdeps/sparc/sparc64/bsd-setjmp.S: Remove. * sysdeps/unix/sysv/linux/sparc/sparc64/bsd-_setjmp.S: New empty file. * sysdeps/unix/sysv/linux/sparc/sparc64/bsd-setjmp.S: New empty file. * sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add __longjmp alias. * sysdeps/unix/sysv/linux/sparc/sparc64/setjmp.S: Add weak _setjmp and setjmp entry points. * sysdeps/sparc/sparc64/dl-machine.h: Finish real implementation. * sysdeps/sparc/sparc64/elf/crtbegin.S: Add copyright, fix PIC. * sysdeps/sparc/sparc64/elf/crtend.S: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h (struct sigaction): Fix sa_flags size for sparc64; add sa_restorer for kernel. * sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Fix PIC. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/syscall.S: New file. 1997-08-10 18:29:08 1997 Mark Kettenis <kettenis@phys.uva.nl> * login/login.c (login): Check for correct return value of utmpname. 1997-08-11 16:49 Ulrich Drepper <drepper@cygnus.com> * time/tzset.c (__tzset_internal): Correctly handle TZ strings following incorrect old POSIX specs. Patch by Paul Eggert <eggert@twinsun.com>. * sysdeps/generic/bits/sigaction.h: Correct comment for SA_RESTART. * sysdeps/unix/bsd/osf/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/minix/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/sysv4/bits/sigaction.h: Likewise. Reported by NIIBE Yutaka <gniibe@mri.co.jp>. 1997-08-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/math.texi: Define the macros @mul and @infinity and use them to format the multiplication and infinity signs. (FP Comparison Functions): Use @code, not @math, for C code examples. * elf/dl-profile.c: Add descriptions and implement reading of
537 lines
18 KiB
C
537 lines
18 KiB
C
/* Inline math functions for i387.
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Copyright (C) 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 John C. Bowman <bowman@math.ualberta.ca>, 1995.
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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 _BITS_MATHINLINE_H
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#define _BITS_MATHINLINE_H 1
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#if defined __USE_ISOC9X && defined __GNUC__ && __GNUC__ >= 2
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/* ISO C 9X defines some macros to perform unordered comparisons. The
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ix87 FPU supports this with special opcodes and we should use them.
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These must not be inline functions since we have to be able to handle
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all floating-point types. */
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# define isgreater(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; testb $0x45, %%ah; setz %%al;" \
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"andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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# define isgreaterequal(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; testb $0x05, %%ah; setz %%al;" \
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"andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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# define isless(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; xorb $0x01, %%ah; testb $0x45, %%ah;" \
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"setz %%al; andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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# define islessequal(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; xorb $0x01, %%ah; testb $0x05, %%ah;" \
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"setz %%al; andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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# define islessgreater(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; testb $0x44, %%ah; setz %%al;" \
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"andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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# define isunordered(x, y) \
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({ int __result; \
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__asm__ ("fucompp; fnstsw; sahf; setp %%al; andl $0x01, %0" \
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: "=a" (__result) : "u" (y), "t" (x) : "cc", "st", "st(1)"); \
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__result; })
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#endif
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#ifdef __GNUC__
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#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
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#ifdef __cplusplus
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# define __MATH_INLINE __inline
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#else
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# define __MATH_INLINE extern __inline
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#endif
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/* A macro to define float, double, and long double versions of various
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math functions for the ix87 FPU. FUNC is the function name (which will
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be suffixed with f and l for the float and long double version,
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respectively). OP is the name of the FPU operation. */
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#if defined __USE_MISC || defined __USE_ISOC9X
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# define __inline_mathop(func, op) \
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__inline_mathop_ (double, func, op) \
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__inline_mathop_ (float, __CONCAT(func,f), op) \
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__inline_mathop_ (long double, __CONCAT(func,l), op)
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#else
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# define __inline_mathop(func, op) \
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__inline_mathop_ (double, func, op)
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#endif
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#define __inline_mathop_(float_type, func, op) \
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__inline_mathop_decl_ (float_type, func, op, "0" (__x))
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#if defined __USE_MISC || defined __USE_ISOC9X
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# define __inline_mathop_decl(func, op, params...) \
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__inline_mathop_decl_ (double, func, op, params) \
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__inline_mathop_decl_ (float, __CONCAT(func,f), op, params) \
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__inline_mathop_decl_ (long double, __CONCAT(func,l), op, params)
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#else
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# define __inline_mathop_decl(func, op, params...) \
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__inline_mathop_decl_ (double, func, op, params)
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#endif
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#define __inline_mathop_decl_(float_type, func, op, params...) \
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__MATH_INLINE float_type func (float_type); \
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__MATH_INLINE float_type func (float_type __x) \
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{ \
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register float_type __result; \
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__asm __volatile__ (op : "=t" (__result) : params); \
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return __result; \
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}
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#if defined __USE_MISC || defined __USE_ISOC9X
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# define __inline_mathcode(func, arg, code) \
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__inline_mathcode_ (double, func, arg, code) \
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__inline_mathcode_ (float, __CONCAT(func,f), arg, code) \
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__inline_mathcode_ (long double, __CONCAT(func,l), arg, code)
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#else
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# define __inline_mathcode(func, arg, code) \
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__inline_mathcode_ (double, func, arg, code)
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#endif
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#define __inline_mathcode_(float_type, func, arg, code) \
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__MATH_INLINE float_type func (float_type); \
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__MATH_INLINE float_type func (float_type arg) \
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{ \
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code; \
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}
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#if defined __USE_MISC || defined __USE_ISOC9X
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# define __inline_mathcode2(func, arg1, arg2, code) \
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__inline_mathcode2_ (double, func, arg1, arg2, code) \
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__inline_mathcode2_ (float, __CONCAT(func,f), arg1, arg2, code) \
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__inline_mathcode2_ (long double, __CONCAT(func,l), arg1, arg2, code)
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#else
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# define __inline_mathcode2(func, arg1, arg2, code) \
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__inline_mathcode2_ (double, func, arg1, arg2, code)
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#endif
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#define __inline_mathcode2_(float_type, func, arg1, arg2, code) \
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__MATH_INLINE float_type func (float_type, float_type); \
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__MATH_INLINE float_type func (float_type arg1, float_type arg2) \
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{ \
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code; \
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}
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/* Optimized inline implementation, sometimes with reduced precision
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and/or argument range. */
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#define __expm1_code \
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register long double __value; \
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register long double __exponent; \
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register long double __temp; \
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__asm __volatile__ \
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("fldl2e # e^x - 1 = 2^(x * log2(e)) - 1\n\t" \
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"fmul %%st(1) # x * log2(e)\n\t" \
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"fstl %%st(1)\n\t" \
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"frndint # int(x * log2(e))\n\t" \
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"fxch\n\t" \
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"fsub %%st(1) # fract(x * log2(e))\n\t" \
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"f2xm1 # 2^(fract(x * log2(e))) - 1\n\t" \
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"fscale # 2^(x * log2(e)) - 2^(int(x * log2(e)))\n\t" \
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: "=t" (__value), "=u" (__exponent) : "0" (__x)); \
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__asm __volatile__ \
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("fscale # 2^int(x * log2(e))\n\t" \
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: "=t" (__temp) : "0" (1.0), "u" (__exponent)); \
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__temp -= 1.0; \
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return __temp + __value
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__inline_mathcode_ (long double, __expm1l, __x, __expm1_code)
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#define __exp_code \
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register long double __value; \
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register long double __exponent; \
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__asm __volatile__ \
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("fldl2e # e^x = 2^(x * log2(e))\n\t" \
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"fmul %%st(1) # x * log2(e)\n\t" \
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"fstl %%st(1)\n\t" \
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"frndint # int(x * log2(e))\n\t" \
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"fxch\n\t" \
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"fsub %%st(1) # fract(x * log2(e))\n\t" \
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"f2xm1 # 2^(fract(x * log2(e))) - 1\n\t" \
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: "=t" (__value), "=u" (__exponent) : "0" (__x)); \
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__value += 1.0; \
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__asm __volatile__ \
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("fscale" \
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: "=t" (__value) : "0" (__value), "u" (__exponent)); \
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return __value
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__inline_mathcode (exp, __x, __exp_code)
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__inline_mathcode_ (long double, __expl, __x, __exp_code)
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__inline_mathcode (tan, __x, \
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register long double __value; \
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register long double __value2 __attribute__ ((unused)); \
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__asm __volatile__ \
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("fptan" \
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: "=t" (__value2), "=u" (__value) : "0" (__x)); \
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return __value)
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#define __atan2_code \
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register long double __value; \
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__asm __volatile__ \
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("fpatan\n\t" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "st(1)"); \
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return __value
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__inline_mathcode2 (atan2, __y, __x, __atan2_code)
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__inline_mathcode2_ (long double, __atan2l, __y, __x, __atan2_code)
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__inline_mathcode2 (fmod, __x, __y, \
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register long double __value; \
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__asm __volatile__ \
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("1: fprem\n\t" \
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"fnstsw %%ax\n\t" \
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"sahf\n\t" \
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"jp 1b" \
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: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
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return __value)
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__inline_mathcode2 (pow, __x, __y, \
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register long double __value; \
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register long double __exponent; \
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long int __p = (long int) __y; \
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if (__x == 0.0 && __y > 0.0) \
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return 0.0; \
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if (__y == (double) __p) \
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{ \
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long double __r = 1.0; \
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if (__p == 0) \
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return 1.0; \
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if (__p < 0) \
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{ \
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__p = -__p; \
|
|
__x = 1.0 / __x; \
|
|
} \
|
|
while (1) \
|
|
{ \
|
|
if (__p & 1) \
|
|
__r *= __x; \
|
|
__p >>= 1; \
|
|
if (__p == 0) \
|
|
return __r; \
|
|
__x *= __x; \
|
|
} \
|
|
/* NOTREACHED */ \
|
|
} \
|
|
__asm __volatile__ \
|
|
("fyl2x" : "=t" (__value) : "0" (__x), "u" (1.0) : "st(1)"); \
|
|
__asm __volatile__ \
|
|
("fmul %%st(1) # y * log2(x)\n\t" \
|
|
"fst %%st(1)\n\t" \
|
|
"frndint # int(y * log2(x))\n\t" \
|
|
"fxch\n\t" \
|
|
"fsub %%st(1) # fract(y * log2(x))\n\t" \
|
|
"f2xm1 # 2^(fract(y * log2(x))) - 1\n\t" \
|
|
: "=t" (__value), "=u" (__exponent) : "0" (__y), "1" (__value)); \
|
|
__value += 1.0; \
|
|
__asm __volatile__ \
|
|
("fscale" \
|
|
: "=t" (__value) : "0" (__value), "u" (__exponent)); \
|
|
return __value)
|
|
|
|
|
|
__inline_mathop (sqrt, "fsqrt")
|
|
__inline_mathop_ (long double, __sqrtl, "fsqrt")
|
|
|
|
#if defined __GNUC__ && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 8)
|
|
__inline_mathcode_ (fabs, __x, return __builtin_fabs (__x))
|
|
__inline_mathcode_ (fabsf, __x, return __builtin_fabsf (__x))
|
|
__inline_mathcode_ (fabsl, __x, return __builtin_fabsl (__x))
|
|
__inline_mathcode_ (__fabsl, __x, return __builtin_fabsl (__x))
|
|
#else
|
|
__inline_mathop (fabs, "fabs")
|
|
__inline_mathop_ (long double, __fabsl, "fabs")
|
|
#endif
|
|
|
|
/* The argument range of this inline version is reduced. */
|
|
__inline_mathop (sin, "fsin")
|
|
/* The argument range of this inline version is reduced. */
|
|
__inline_mathop (cos, "fcos")
|
|
|
|
__inline_mathop (atan, "fld1; fpatan")
|
|
__inline_mathop (log, "fldln2; fxch; fyl2x")
|
|
__inline_mathop (log10, "fldlg2; fxch; fyl2x")
|
|
|
|
__inline_mathcode (asin, __x, return __atan2l (__x, __sqrtl (1.0 - __x * __x)))
|
|
__inline_mathcode (acos, __x, return __atan2l (__sqrtl (1.0 - __x * __x), __x))
|
|
|
|
__inline_mathcode_ (long double, __sgn1l, __x, return __x >= 0.0 ? 1.0 : -1.0)
|
|
|
|
|
|
/* The argument range of the inline version of sinhl is slightly reduced. */
|
|
__inline_mathcode (sinh, __x, \
|
|
register long double __exm1 = __expm1l (__fabsl (__x)); \
|
|
return 0.5 * (__exm1 / (__exm1 + 1.0) + __exm1) * __sgn1l (__x))
|
|
|
|
__inline_mathcode (cosh, __x, \
|
|
register long double __ex = __expl (__x); \
|
|
return 0.5 * (__ex + 1.0 / __ex))
|
|
|
|
__inline_mathcode (tanh, __x, \
|
|
register long double __exm1 = __expm1l (-__fabsl (__x + __x)); \
|
|
return __exm1 / (__exm1 + 2.0) * __sgn1l (-__x))
|
|
|
|
|
|
__inline_mathcode (floor, __x, \
|
|
register long double __value; \
|
|
__volatile unsigned short int __cw; \
|
|
__volatile unsigned short int __cwtmp; \
|
|
__asm __volatile ("fnstcw %0" : "=m" (__cw)); \
|
|
__cwtmp = (__cw & 0xf3ff) | 0x0400; /* rounding down */ \
|
|
__asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \
|
|
__asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \
|
|
__asm __volatile ("fldcw %0" : : "m" (__cw)); \
|
|
return __value)
|
|
|
|
__inline_mathcode (ceil, __x, \
|
|
register long double __value; \
|
|
__volatile unsigned short int __cw; \
|
|
__volatile unsigned short int __cwtmp; \
|
|
__asm __volatile ("fnstcw %0" : "=m" (__cw)); \
|
|
__cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */ \
|
|
__asm __volatile ("fldcw %0" : : "m" (__cwtmp)); \
|
|
__asm __volatile ("frndint" : "=t" (__value) : "0" (__x)); \
|
|
__asm __volatile ("fldcw %0" : : "m" (__cw)); \
|
|
return __value)
|
|
|
|
#define __ldexp_code \
|
|
register long double __value; \
|
|
__asm __volatile__ \
|
|
("fscale" \
|
|
: "=t" (__value) : "0" (__x), "u" ((long double) __y)); \
|
|
return __value
|
|
|
|
__MATH_INLINE double ldexp (double __x, int __y);
|
|
__MATH_INLINE double
|
|
ldexp (double __x, int __y)
|
|
{
|
|
__ldexp_code;
|
|
}
|
|
|
|
|
|
/* Optimized versions for some non-standardized functions. */
|
|
#if defined __USE_ISOC9X || defined __USE_MISC
|
|
|
|
__inline_mathop_decl (log2, "fyl2x", "u" (1.0), "0" (__x) : "st(1)")
|
|
|
|
__inline_mathcode (expm1, __x, __expm1_code)
|
|
|
|
/* We cannot rely on M_SQRT being defined. So we do it for ourself
|
|
here. */
|
|
# define __M_SQRT2 _Mldbl(1.41421356237309504880) /* sqrt(2) */
|
|
|
|
__inline_mathcode (log1p, __x, \
|
|
register long double __value; \
|
|
if (__fabsl (__x) >= 1.0 - 0.5 * __M_SQRT2) \
|
|
__value = logl (1.0 + __x); \
|
|
else \
|
|
__asm __volatile__ \
|
|
("fldln2\n\t" \
|
|
"fxch\n\t" \
|
|
"fyl2xp1" \
|
|
: "=t" (__value) : "0" (__x)); \
|
|
return __value)
|
|
|
|
|
|
/* The argument range of the inline version of asinhl is slightly reduced. */
|
|
__inline_mathcode (asinh, __x, \
|
|
register long double __y = __fabsl (__x); \
|
|
return (log1pl (__y * __y / (__sqrtl (__y * __y + 1.0) + 1.0) + __y) \
|
|
* __sgn1l (__x)))
|
|
|
|
__inline_mathcode (acosh, __x, \
|
|
return logl (__x + __sqrtl (__x - 1.0) * __sqrtl (__x + 1.0)))
|
|
|
|
__inline_mathcode (atanh, __x, \
|
|
register long double __y = __fabsl (__x); \
|
|
return (-0.5 * log1pl (-(__y + __y) / (1.0 + __y)) * \
|
|
__sgn1l (__x)))
|
|
|
|
|
|
/* The argument range of the inline version of hypotl is slightly reduced. */
|
|
__inline_mathcode2 (hypot, __x, __y, return __sqrtl (__x * __x + __y * __y))
|
|
|
|
__inline_mathcode(logb, __x, \
|
|
register long double __value; \
|
|
register long double __junk; \
|
|
__asm __volatile__ \
|
|
("fxtract\n\t" \
|
|
: "=t" (__junk), "=u" (__value) : "0" (__x)); \
|
|
return __value)
|
|
|
|
__MATH_INLINE float ldexpf (float __x, int __y);
|
|
__MATH_INLINE float
|
|
ldexpf (float __x, int __y)
|
|
{
|
|
__ldexp_code;
|
|
}
|
|
|
|
__MATH_INLINE long double ldexpl (long double __x, int __y);
|
|
__MATH_INLINE long double
|
|
ldexpl (long double __x, int __y)
|
|
{
|
|
__ldexp_code;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
#ifdef __USE_MISC
|
|
|
|
__inline_mathcode2 (drem, __x, __y, \
|
|
register double __value; \
|
|
__asm __volatile__ \
|
|
("1: fprem1\n\t" \
|
|
"fstsw %%ax\n\t" \
|
|
"sahf\n\t" \
|
|
"jp 1b" \
|
|
: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
|
|
return __value)
|
|
|
|
|
|
/* This function is used in the `isfinite' macro. */
|
|
__MATH_INLINE int __finite (double __x);
|
|
__MATH_INLINE int
|
|
__finite (double __x)
|
|
{
|
|
register int __result;
|
|
__asm__ __volatile__
|
|
("orl $0x800fffff, %0\n\t"
|
|
"incl %0\n\t"
|
|
"shrl $31, %0"
|
|
: "=q" (__result) : "0" (((int *) &__x)[1]));
|
|
return __result;
|
|
}
|
|
|
|
/* Miscellaneous functions */
|
|
|
|
__inline_mathcode (__sgn, __x, \
|
|
return __x == 0.0 ? 0.0 : (__x > 0.0 ? 1.0 : -1.0))
|
|
|
|
__inline_mathcode (__coshm1, __x, \
|
|
register long double __exm1 = __expm1l (__fabsl (__x)); \
|
|
return 0.5 * (__exm1 / (__exm1 + 1.0)) * __exm1)
|
|
|
|
__inline_mathcode (__acosh1p, __x, \
|
|
return log1pl (__x + __sqrtl (__x) * __sqrtl (__x + 2.0)))
|
|
|
|
__inline_mathcode (__pow2, __x, \
|
|
register long double __value; \
|
|
register long double __exponent; \
|
|
long int __p = (long int) __x; \
|
|
if (__x == (long double) __p) \
|
|
return ldexpl (1.0, __p); \
|
|
__asm __volatile__ \
|
|
("fldl %%st(0)\n\t" \
|
|
"frndint # int(x)\n\t" \
|
|
"fxch\n\t" \
|
|
"fsub %%st(1) # fract(x)\n\t" \
|
|
"f2xm1 # 2^(fract(x)) - 1\n\t" \
|
|
: "=t" (__value), "=u" (__exponent) : "0" (__x)); \
|
|
__value += 1.0; \
|
|
__asm __volatile__ \
|
|
("fscale" \
|
|
: "=t" (__value) : "0" (__value), "u" (__exponent)); \
|
|
return __value)
|
|
|
|
#define __sincos_code \
|
|
register long double __cosr; \
|
|
register long double __sinr; \
|
|
__asm __volatile__ \
|
|
("fsincos\n\t" \
|
|
"fnstsw %%ax\n\t" \
|
|
"testl $0x400, %%eax\n\t" \
|
|
"jz 1f\n\t" \
|
|
"fldpi\n\t" \
|
|
"fadd %%st(0)\n\t" \
|
|
"fxch %%st(1)\n\t" \
|
|
"2: fprem1\n\t" \
|
|
"fnstsw %%ax\n\t" \
|
|
"testl $0x400, %%eax\n\t" \
|
|
"jnz 2b\n\t" \
|
|
"fstp %%st(1)\n\t" \
|
|
"fsincos\n\t" \
|
|
"1:" \
|
|
: "=t" (__cosr), "=u" (__sinr) : "0" (__x)); \
|
|
*__sinx = __sinr; \
|
|
*__cosx = __cosr
|
|
|
|
__MATH_INLINE void __sincos (double __x, double *__sinx, double *__cosx);
|
|
__MATH_INLINE void
|
|
__sincos (double __x, double *__sinx, double *__cosx)
|
|
{
|
|
__sincos_code;
|
|
}
|
|
|
|
__MATH_INLINE void __sincosf (float __x, float *__sinx, float *__cosx);
|
|
__MATH_INLINE void
|
|
__sincosf (float __x, float *__sinx, float *__cosx)
|
|
{
|
|
__sincos_code;
|
|
}
|
|
|
|
__MATH_INLINE void __sincosl (long double __x, long double *__sinx,
|
|
long double *__cosx);
|
|
__MATH_INLINE void
|
|
__sincosl (long double __x, long double *__sinx, long double *__cosx)
|
|
{
|
|
__sincos_code;
|
|
}
|
|
|
|
#endif /* __USE_MISC */
|
|
|
|
/* Undefine some of the large macros which are not used anymore. */
|
|
#undef __expm1_code
|
|
#undef __exp_code
|
|
#undef __atan2_code
|
|
#undef __sincos_code
|
|
|
|
#endif /* __NO_MATH_INLINES */
|
|
#endif /* __GNUC__ */
|
|
|
|
#endif /* _BITS_MATHINLINE_H */
|