float128: Add public _Float128 declarations to libm.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
2016-07-20 16:53:36 +00:00
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/* Macros to control TS 18661-3 glibc features.
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2024-01-01 18:12:26 +00:00
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Copyright (C) 2017-2024 Free Software Foundation, Inc.
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float128: Add public _Float128 declarations to libm.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
2016-07-20 16:53:36 +00:00
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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float128: Add public _Float128 declarations to libm.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
2016-07-20 16:53:36 +00:00
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/* Defined to 1 if the current compiler invocation provides a
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floating-point type with the IEEE 754 binary128 format, and this glibc
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includes corresponding *f128 interfaces for it. */
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#define __HAVE_FLOAT128 0
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/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
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from the default float, double and long double types in this glibc. */
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#define __HAVE_DISTINCT_FLOAT128 0
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Add _Float64x function aliases.
This patch continues filling out TS 18661-3 support by adding *f64x
function aliases on platforms with _Float64x support. (It so happens
the set of such platforms is exactly the same as the set of platforms
with _Float128 support, although on x86_64, x86 and ia32 the _Float64x
format is Intel extended rather than binary128.) The API provided
corresponds exactly to that provided for _Float128, mostly coming from
TS 18661-3. As these functions always alias those for another type
(long double, _Float128 or both), __* function names are not provided,
as in other cases of alias types.
Given the preparation done in previous patches, this one just enables
the feature via Makeconfig and bits/floatn.h, adds symbol versions,
and updates documentation and ABI baselines. The symbol versions are
present unconditionally as GLIBC_2.27 in the relevant Versions files,
as it's OK for those to specify versions for functions that may not be
present in some configurations; no additional complexity is needed
unless in future some configuration gains support for this type that
didn't have such support in 2.27. The Makeconfig additions for ia64
and x86 aren't strictly needed, as those configurations also get
float64x-alias-fcts definitions from
sysdeps/ieee754/float128/Makeconfig, but still seem appropriate given
that _Float64x is not _Float128 for those configurations.
A libm-test-ulps update for x86 is included. This is because
bits/mathinline.h does not have _Float64x support added and for two
functions the use of out-of-line functions results in increased ulps
(ifloat64x shares ulps with ildouble / ifloat128 as appropriate).
Given that we'd like generally to eliminate bits/mathinline.h
optimizations, preferring to have such optimizations in GCC instead,
it seems reasonable not to add such support there for new types. GCC
support for _FloatN / _FloatNx built-in functions is limited, but has
been improved in GCC 8, and at some point I hope the full set of libm
built-in functions in GCC, and other optimizations with
per-floating-type aspects, will be enabled for all _FloatN / _FloatNx
types.
Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.
* sysdeps/ia64/Makeconfig (float64x-alias-fcts): New variable.
* sysdeps/ieee754/float128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/ieee754/ldbl-128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/x86/Makeconfig: New file.
* bits/floatn-common.h (__HAVE_FLOAT64X): Remove macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* bits/floatn.h (__HAVE_FLOAT64X): New macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ia64/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ieee754/ldbl-128/bits/floatn.h (__HAVE_FLOAT64X):
Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/mips/ieee754/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/powerpc/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/x86/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* manual/math.texi (Mathematics): Document support for _Float64x.
* math/Versions (GLIBC_2.27): Add _Float64x functions.
* stdlib/Versions (GLIBC_2.27): Likewise.
* wcsmbs/Versions (GLIBC_2.27): Likewise.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
2017-11-27 14:16:47 +00:00
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/* Defined to 1 if the current compiler invocation provides a
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floating-point type with the right format for _Float64x, and this
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glibc includes corresponding *f64x interfaces for it. */
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#define __HAVE_FLOAT64X 0
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/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
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of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
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the format of _Float128, which must be different from that of long
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double. */
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#define __HAVE_FLOAT64X_LONG_DOUBLE 0
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2017-11-17 22:01:43 +00:00
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#ifndef __ASSEMBLER__
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float128: Add public _Float128 declarations to libm.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
2016-07-20 16:53:36 +00:00
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/* Defined to concatenate the literal suffix to be used with _Float128
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types, if __HAVE_FLOAT128 is 1.
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E.g.: #define __f128(x) x##f128. */
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2017-11-17 22:01:43 +00:00
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# undef __f128
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float128: Add public _Float128 declarations to libm.
This introduces the machine-dependent bits/floatn.h to control
the inclusion of _Float128 ABI.
* bits/floatn.h: New file.
* bits/huge_val_flt128.h: Likewise.
* bits/libm-simd-decl-stubs.h (__DECL_SIMD_cosf128): New macro.
(__DECL_SIMD_sinf128): Likewise.
(__DECL_SIMD_sincosf128): Likewise.
(__DECL_SIMD_logf128): Likewise.
(__DECL_SIMD_expf128): Likewise.
(__DECL_SIMD_powf128): Likewise.
* math/Makefile (headers): Install bits/floatn.h and
bits/huge_val_flt128.h.
* math/bits/cmathcalls.h (_Mdouble_complex_): Only define if not
defined.
* math/bits/mathcalls.h (pow10, isinf, finite, drem, significand)
(isnan, gamma, nexttoward, scalb): Only define if not
__MATH_DECLARING_FLOATN.
(nextdown, nextup, llogb, roundeven, fromfp, ufromfp, fromfpx)
(ufromfpx, fmaxmag, fminmag, totalorder, totalordermag)
(canonicalize, getpayload, setpayload, setpayloadsig): Declare for
_FloatN even if __STDC_WANT_IEC_60559_BFP_EXT__ is not defined.
* math/complex.h: Include bits/libc-header-start.h and bits/floatn.h.
Include bits/cmathcalls.h to get the declarations of _Float128
versions of complex functions.
[__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)] (CMPLXF128):
Define macro.
* math/math.h: Include bits/floatn.h and bits/huge_val_flt128.h.
Include bits/mathcalls-helper-functions.h and bits/mathcalls.h to
get the declarations of _Float128 versions of math functions.
(__MATH_DECLARING_FLOATN): New macro to control declaration of
_FloatN types.
[__GNUC_PREREQ (6,0)] (signbit): Since GCC 6.0, __builtin_signbit
is type-generic, so use it without __MATH_TG.
[__HAVE_DISTINCT_FLOAT128] (isinf): This builtin is broken for
_Float128 type on GCC < 7.0. Explicitly call __isinff128 for
_Float128 type and GCC < 7.0, otherwise use the builtin.
[__HAVE_FLOAT128 && defined __USE_GNU] (M_Ef128, M_LOG2Ef128)
(M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128)
(M_PI_4f128, M_1_PIf128, M_2_PIf128, M_SQRT2f128, M_SQRT1_2f128):
New _GNU_SOURCE enabled macros.
2016-07-20 16:53:36 +00:00
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/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1.
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E.g.: #define __CFLOAT128 _Complex _Float128. */
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2017-11-17 22:01:43 +00:00
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# undef __CFLOAT128
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#endif /* !__ASSEMBLER__. */
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2017-10-20 21:42:51 +00:00
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#include <bits/floatn-common.h>
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