/* Macros to control TS 18661-3 glibc features on ia64.

   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>

/* 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.  The required

   libgcc support was added some time after the basic compiler

   support.  */

#if __GNUC_PREREQ (4, 4)

# 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.  */

#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 1

/* 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 1

#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 exists only since GCC 7.0.  */

#   define __f128(x) x##q

#  else

#   define __f128(x) x##f128

#  endif

# endif

/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1.  */

# if __HAVE_FLOAT128

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus

/* Add a typedef for older GCC compilers which don't natively support

   _Complex _Float128.  */

typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__)));

#   define __CFLOAT128 __cfloat128

#  else

#   define __CFLOAT128 _Complex _Float128

#  endif

# endif

/* The remaining of this file provides support for older compilers.  */

# if __HAVE_FLOAT128

/* The type _Float128 exists only since GCC 7.0.  */

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus

typedef __float128 _Float128;

#  endif

/* __builtin_huge_valf128 doesn't exist before GCC 7.0.  */

#  if !__GNUC_PREREQ (7, 0)

#   define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ())

#  endif

/* Older GCC has only a subset of built-in functions for _Float128 on

   ia64, and __builtin_infq is not usable in static initializers.

   Converting a narrower sNaN to _Float128 produces a quiet NaN, so

   attempts to use _Float128 sNaNs will not work properly with older

   compilers.  */

#  if !__GNUC_PREREQ (7, 0)

#   define __builtin_copysignf128 __builtin_copysignq

#   define __builtin_fabsf128 __builtin_fabsq

#   define __builtin_inff128() ((_Float128) __builtin_inf ())

#   define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))

#   define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))

#  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 */