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f819dbea0a
This patch adds ULPs for the float128 type, updates the abilist for libc and libm, and adds the files bits/floatn.h and float128-abi.h, in order to enable the new type for powerpc64le. This patch also adds the implementation of sqrtf128 for powerpc64le, since it is not implemented in libgcc. The sfp-machine.h header is taken from libgcc. Tested for powerpc64le (GCC 6.2 and GCC 7.1), powerpc64 and s390x. * manual/math.texi (Mathematics): Mention the enabling of float128 for powerpc64le. * sysdeps/powerpc/bits/floatn.h: New file. * sysdeps/powerpc/fpu/libm-test-ulps: Regenerated. * sysdeps/powerpc/fpu/math_private.h: (__ieee754_sqrtf128): New inline override. * sysdeps/powerpc/powerpc64le/Implies-before: New file. * sysdeps/powerpc/powerpc64le/Makefile: New file. * sysdeps/powerpc/powerpc64le/fpu/e_sqrtf128.c: New file. * sysdeps/powerpc/powerpc64le/fpu/sfp-machine.h: New file. * sysdeps/powerpc/powerpc64le/power9/fpu/e_sqrtf128.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Updated. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64le/float128-abi.h: New file.
93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/* Macros to control TS 18661-3 glibc features on powerpc.
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Copyright (C) 2017 Free Software Foundation, Inc.
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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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<http://www.gnu.org/licenses/>. */
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#ifndef _BITS_FLOATN_H
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#define _BITS_FLOATN_H
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#include <features.h>
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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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#if defined _ARCH_PWR8 && defined __LITTLE_ENDIAN__ && (_CALL_ELF == 2) \
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&& defined __FLOAT128__
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# define __HAVE_FLOAT128 1
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#else
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# define __HAVE_FLOAT128 0
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#endif
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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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#if __HAVE_FLOAT128
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# define __HAVE_DISTINCT_FLOAT128 1
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#else
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# define __HAVE_DISTINCT_FLOAT128 0
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#endif
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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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#if __HAVE_FLOAT128
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# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
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/* The literal suffix (f128) exist for powerpc only since GCC 7.0. */
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# define __f128(x) x##q
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# else
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# define __f128(x) x##f128
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# endif
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#endif
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/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */
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#if __HAVE_FLOAT128
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# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
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/* Add a typedef for older GCC compilers which don't natively support
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_Complex _Float128. */
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typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__)));
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# define __CFLOAT128 __cfloat128
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# else
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# define __CFLOAT128 _Complex _Float128
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# endif
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#endif
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/* The remaining of this file provides support for older compilers. */
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#if __HAVE_FLOAT128
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/* The type _Float128 exist for powerpc only since GCC 7.0. */
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# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
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typedef __float128 _Float128;
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# endif
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/* Builtin __builtin_huge_valf128 doesn't exist before GCC 7.0. */
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# if !__GNUC_PREREQ (7, 0)
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# define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ())
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# endif
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/* The following builtins (suffixed with 'q') are available in GCC >= 6.2,
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which is the minimum version required for float128 support on powerpc64le.
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Since GCC 7.0 the builtins suffixed with f128 are also available, then
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there is no need to redefined them. */
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# if !__GNUC_PREREQ (7, 0)
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# define __builtin_copysignf128 __builtin_copysignq
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# define __builtin_fabsf128 __builtin_fabsq
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# define __builtin_inff128 __builtin_infq
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# define __builtin_nanf128 __builtin_nanq
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# define __builtin_nansf128 __builtin_nansq
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# endif
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#endif
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#endif /* _BITS_FLOATN_H */
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