multi-arch glibc headers

libc/include/powerpc-linux-gnu/bits/floatn.h

@@ -0,0 +1,122 @@
+/* Macros to control TS 18661-3 glibc features on powerpc.
+   Copyright (C) 2017-2019 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 */