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1997-08-24 12:24 Ulrich Drepper <drepper@cygnus.com> * configure.in (INSTALL): Quote `$'. * libc.map: Add __xpg_basename. * csu/Makefile (initfini.s): Disable optimization. * elf/dl-deps.c: Implement handling of DL_FILTER. * elf/dl-load.c (_dl_init_paths): Add error check. * intl/finddomain.c (_nl_find_domain): Correct comment. * intl/localealias.c: Include <bits/libc-lock.h> not <libc-lock.h>. * libio/stdio.h: Make {,v}snprintf available if __USE_BSD. Change extern inline functions to work correctly in C++. * locale/iso-4217.def: Update for more recent ISO 4217 version. * locale/loadlocale.c (_nl_load_locale): Add cast. * manual/message.texi: Finish gettext section. * posix/getopt_init.c: Don't use relative #include path. (__getopt_clean_environment): Change function to take pointer to environment as argument. Optimize generation of test string a bit. * sysdeps/unix/sysv/linux/init-first.c: Call __getopt_clean_environment with additional argument. * poisx/glob.c: Add prototype for next_brace_sub. * sysdeps/generic/dl-sysdep.c: Recognize AT_BASE value on auxiliary vector. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Rewrite to not generate relocation entry. Suggested by Richard Henderson. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (elf_machine_runtime_setup): Add .aligns. * sysdeps/i386/fpu/fraiseexcpt.c: Add volatile to asms. * sysdeps/i386/fpu/bits/mathinline.h: Partially undo change of 1997-08-14 03:14. gcc 2.7.2* is really broken in some aspects. * sysdeps/standalone/i386/i386.h: Clean up asm statements a bit. * sysdeps/standalone/i960/i960ca.h: Likewise. 1997-08-22 19:04 Richard Henderson <rth@cygnus.com> * elf/rtld.c (_dl_start): Init _dl_rtld_map.l_opencount due to undocumented test addition in _dl_map_object. Support ET_EXEC versions of ld.so, for debugging at least: * elf/dl-load.c (_dl_map_object): Add_name_to_object could get called despite the DT_SONAME != NULL test, segfaulting. Simplify the code here as well. * elf/dl-lookup.c (do_lookup): Skip objects with no symtab. (_dl_setup_hash): Likewise for hash tables. * elf/dl-version.c (_dl_check_map_versions): Likewise for strtabs. * elf/rtld.c (_dl_start): Likewise for rpath. (_dl_rtld_libname2): New variable. (dl_main): Use it to add an soname for ourselves when we don't have one of our own. Base it on the target's .interp. (dl_main): Again, skip printing of objects that don't have strtabs. Sparc 32 merge: * elf/dl-runtime.c (ELF_FIXUP_RETURN_VALUE): Provide default value. (fixup): Simplify code. Use ELF_FIXUP_RETURN_VALUE. (profile_fixup): Likewise, though this still needs fixing for Sparc32 and PPC. * sysdeps/powerpc/dl-machine.h: Transmute ELF_FIXUP_RETURNS_ADDRESS to ELF_FIXUP_RETURN_VALUE. * sysdeps/sparc/sparc32/dl-machine.h: Implement lazy relocation. Fix up _dl_start_user to handle _dl_skip_args properly. Use _dl_hwcap to determine if "flush" is available/needed. * sysdeps/sparc/configure.in: Remove. It doesn't actually do anything anymore, and what it did do is done somewhere else. * sysdeps/sparc/configure: Likewise. * sysdeps/sparc/fpu/bits/mathdef.h (FP_ILOGB0, FP_ILOGBNAN): New. * sysdeps/sparc/fpu/fraiseexcpt.c: Rearrange for smaller code. * sysdeps/sparc/sparc32/Makefile: Fix sparc->sparc/sparc32 bits in divrem expansions. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (END, LOC): New definitions for assembly syntax differences. * sysdeps/sparc/sparc32/__longjmp.S: %g6,%g7 are reserved to the "system". Use %g2,%g3 instead. Use new local label macro. * sysdeps/sparc/sparc32/add_n.S: Use <sysdep.h> and ENTRY, END, and LOC for proper assembly headers/footers. * sysdeps/sparc/sparc32/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/alloca.S: Likewise. * sysdeps/sparc/sparc32/dotmul.S: Likewise. * sysdeps/sparc/sparc32/lshift.S: Likewise. * sysdeps/sparc/sparc32/mul_1.S: Likewise. * sysdeps/sparc/sparc32/rshift.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/mul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/submul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/sub_n.S: Likewise. * sysdeps/sparc/sparc32/submul_1.S: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/umul.S: Likewise. * sysdeps/sparc/sparc32/divrem.m4: Likewise. * sysdeps/sparc/sparc32/rem.S: Regenerate. * sysdeps/sparc/sparc32/sdiv.S: Regenerate. * sysdeps/sparc/sparc32/udiv.S: Regenerate. * sysdeps/sparc/sparc32/urem.S: Regenerate. * sysdeps/sparc/sparc32/sparcv8/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: New file. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/umul.S: New file. * sysdeps/sparc/sparc32/sparcv8/urem.S: New file. * sysdeps/sparc/sparc32/bsd-_setjmp.S: Dike out. * sysdeps/sparc/sparc32/bsd-setjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Add _setjmp and setjmp entry points. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Clean up PIC code. * sysdeps/sparc/sparc32/elf/start.S: New file, slightly modified from the sparc64 version. * sysdeps/sparc/sparc32/elf/start.c: Removed. * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Rewrite in assembly based on the sparc64 version. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Duh. Use proper syntax for manipulating %fsr. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Make IEEE conformance be the default. * elf/elf.h (HWCAP_SPARC_*): New definitions. * elf/rtld.c (_dl_hwcap): New variable. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Record AT_HWCAP. * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c: New file. Attempt to get hold of the page size based on what we might have been told at startup time in _dl_pagesize. This will be obsolete when I finish the kernel hooks for a proper sysconf(), stay tuned. Sparc 64 merge: * sysdeps/sparc/sparc64/dl-machine.h (ELF_FIXUP_RETURN_VALUE): New. Figure out the right thing to return based on the .plt format. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Update comment. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h (__dev_t): Should have been 64-bits wide. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: sll->sllx, optimize for branch delay slot usage. 1997-08-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * csu/Makefile ($(objpfx)crt%.o): Fix a missing *.so -> *.os change. 1997-08-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (identities): Change epsilon. * sysdeps/i386/fpu/bits/mathinline.h: Correct arguments to fabs, fabsf, fabsl, __fabsl. * sysdeps/libm-i387/e_remainderl.S: Pop extra value from FPU stack. * sysdeps/libm-ieee754/s_csinhl.c: Include <fenv.h>.
550 lines
18 KiB
C
550 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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/* The gcc, version 2.7 or below, has problems with all this inlining
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code. So disable it for this version of the compiler. */
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 7)
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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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/* Miscellaneous functions */
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__inline_mathcode (__sgn, __x, \
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return __x == 0.0 ? 0.0 : (__x > 0.0 ? 1.0 : -1.0))
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__inline_mathcode (__pow2, __x, \
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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) __x; \
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if (__x == (long double) __p) \
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{ \
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__asm __volatile__ \
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("fscale" \
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: "=t" (__value) : "0" (1.0), "u" (__x)); \
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return __value; \
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} \
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__asm __volatile__ \
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("fldl %%st(0)\n\t" \
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"frndint # int(x)\n\t" \
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"fxch\n\t" \
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"fsub %%st(1) # fract(x)\n\t" \
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"f2xm1 # 2^(fract(x)) - 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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#define __sincos_code \
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register long double __cosr; \
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register long double __sinr; \
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__asm __volatile__ \
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("fsincos\n\t" \
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"fnstsw %%ax\n\t" \
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"testl $0x400, %%eax\n\t" \
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"jz 1f\n\t" \
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"fldpi\n\t" \
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"fadd %%st(0)\n\t" \
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"fxch %%st(1)\n\t" \
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"2: fprem1\n\t" \
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"fnstsw %%ax\n\t" \
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"testl $0x400, %%eax\n\t" \
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"jnz 2b\n\t" \
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"fstp %%st(1)\n\t" \
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"fsincos\n\t" \
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"1:" \
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: "=t" (__cosr), "=u" (__sinr) : "0" (__x)); \
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*__sinx = __sinr; \
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*__cosx = __cosr
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__MATH_INLINE void __sincos (double __x, double *__sinx, double *__cosx);
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__MATH_INLINE void
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__sincos (double __x, double *__sinx, double *__cosx)
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{
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__sincos_code;
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}
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__MATH_INLINE void __sincosf (float __x, float *__sinx, float *__cosx);
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__MATH_INLINE void
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__sincosf (float __x, float *__sinx, float *__cosx)
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{
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__sincos_code;
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}
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__MATH_INLINE void __sincosl (long double __x, long double *__sinx,
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long double *__cosx);
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__MATH_INLINE void
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__sincosl (long double __x, long double *__sinx, long double *__cosx)
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{
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__sincos_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
|
|
__inline_mathcode2 (atan2, __y, __x, __atan2_code)
|
|
__inline_mathcode2_ (long double, __atan2l, __y, __x, __atan2_code)
|
|
|
|
|
|
__inline_mathcode2 (fmod, __x, __y, \
|
|
register long double __value; \
|
|
__asm __volatile__ \
|
|
("1: fprem\n\t" \
|
|
"fnstsw %%ax\n\t" \
|
|
"sahf\n\t" \
|
|
"jp 1b" \
|
|
: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
|
|
return __value)
|
|
|
|
|
|
__inline_mathcode2 (pow, __x, __y, \
|
|
register long double __value; \
|
|
register long double __exponent; \
|
|
long int __p = (long int) __y; \
|
|
if (__x == 0.0 && __y > 0.0) \
|
|
return 0.0; \
|
|
if (__y == (double) __p) \
|
|
{ \
|
|
long double __r = 1.0; \
|
|
if (__p == 0) \
|
|
return 1.0; \
|
|
if (__p < 0) \
|
|
{ \
|
|
__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_ (double, fabs, __x, return __builtin_fabs (__x))
|
|
__inline_mathcode_ (float, fabsf, __x, return __builtin_fabsf (__x))
|
|
__inline_mathcode_ (long double, fabsl, __x, return __builtin_fabsl (__x))
|
|
__inline_mathcode_ (long double, __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(log2, "fld1; fxch; fyl2x")
|
|
|
|
__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]) : "cc");
|
|
return __result;
|
|
}
|
|
|
|
/* Miscellaneous functions */
|
|
|
|
__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)))
|
|
|
|
#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 /* Not gcc <= 2.7. */
|
|
#endif /* __NO_MATH_INLINES */
|
|
#endif /* __GNUC__ */
|
|
|
|
#endif /* _BITS_MATHINLINE_H */
|