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Diffstat (limited to 'sysdeps/powerpc/bits/floatn.h')
| -rw-r--r-- | sysdeps/powerpc/bits/floatn.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/sysdeps/powerpc/bits/floatn.h b/sysdeps/powerpc/bits/floatn.h new file mode 100644 index 0000000000..c6d8b9b9b3 --- /dev/null +++ b/sysdeps/powerpc/bits/floatn.h @@ -0,0 +1,122 @@ +/* Macros to control TS 18661-3 glibc features on powerpc. + Copyright (C) 2017-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_FLOATN_H +#define _BITS_FLOATN_H + +#include <features.h> +#include <bits/long-double.h> + +/* Defined to 1 if the current compiler invocation provides a + floating-point type with the IEEE 754 binary128 format, and this glibc + includes corresponding *f128 interfaces for it. */ +#if defined _ARCH_PWR8 && defined __LITTLE_ENDIAN__ && (_CALL_ELF == 2) \ + && defined __FLOAT128__ && !defined __NO_LONG_DOUBLE_MATH +# define __HAVE_FLOAT128 1 +#else +# define __HAVE_FLOAT128 0 +#endif + +/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct + from the default float, double and long double types in this glibc, i.e. + calls to the binary128 functions go to *f128 symbols instead of *l. */ +#if __HAVE_FLOAT128 +# define __HAVE_DISTINCT_FLOAT128 1 +#else +# define __HAVE_DISTINCT_FLOAT128 0 +#endif + +/* Defined to 1 if the current compiler invocation provides a + floating-point type with the right format for _Float64x, and this + glibc includes corresponding *f64x interfaces for it. */ +#define __HAVE_FLOAT64X __HAVE_FLOAT128 + +/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format + of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has + the format of _Float128, which must be different from that of long + double. */ +#define __HAVE_FLOAT64X_LONG_DOUBLE 0 + +#ifndef __ASSEMBLER__ + +/* Defined to concatenate the literal suffix to be used with _Float128 + types, if __HAVE_FLOAT128 is 1. */ +# if __HAVE_FLOAT128 +# if !__GNUC_PREREQ (7, 0) || defined __cplusplus +/* The literal suffix (f128) exist for powerpc only since GCC 7.0. */ +# if __LDBL_MANT_DIG__ == 113 +# define __f128(x) x##l +# else +# define __f128(x) x##q +# endif +# else +# define __f128(x) x##f128 +# endif +# endif + +/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ +# if __HAVE_FLOAT128 +# if __LDBL_MANT_DIG__ == 113 && defined __cplusplus +typedef long double _Float128; +# define __CFLOAT128 _Complex long double +# elif !__GNUC_PREREQ (7, 0) || defined __cplusplus +/* The type _Float128 exist for powerpc only since GCC 7.0. */ +typedef __float128 _Float128; +/* Add a typedef for older GCC and C++ compilers which don't natively support + _Complex _Float128. */ +typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); +# define __CFLOAT128 __cfloat128 +# else +# define __CFLOAT128 _Complex _Float128 +# endif +# endif + +/* The remaining of this file provides support for older compilers. */ +# if __HAVE_FLOAT128 +/* Builtin __builtin_huge_valf128 doesn't exist before GCC 7.0. */ +# if !__GNUC_PREREQ (7, 0) +# define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) +# endif + +/* The following builtins (suffixed with 'q') are available in GCC >= 6.2, + which is the minimum version required for float128 support on powerpc64le. + Since GCC 7.0 the builtins suffixed with f128 are also available, then + there is no need to redefined them. */ +# if !__GNUC_PREREQ (7, 0) +# define __builtin_copysignf128 __builtin_copysignq +# define __builtin_fabsf128 __builtin_fabsq +# define __builtin_inff128 __builtin_infq +# define __builtin_nanf128 __builtin_nanq +# define __builtin_nansf128 __builtin_nansq +# endif + +/* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*, + e.g.: __builtin_signbitf128, before GCC 6. However, there has never + been a __builtin_signbitf128 in GCC and the type-generic builtin is + only available since GCC 6. */ +# if !__GNUC_PREREQ (6, 0) +# define __builtin_signbitf128 __signbitf128 +# endif + +# endif + +#endif /* !__ASSEMBLER__. */ + +#include <bits/floatn-common.h> + +#endif /* _BITS_FLOATN_H */ |