libcxx/include/cfloat

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_CFLOAT
#define _LIBCPP_CFLOAT

/*
    cfloat synopsis

Macros:

    FLT_ROUNDS
    FLT_EVAL_METHOD     // C99
    FLT_RADIX

    FLT_HAS_SUBNORM     // C11
    DBL_HAS_SUBNORM     // C11
    LDBL_HAS_SUBNORM    // C11

    FLT_MANT_DIG
    DBL_MANT_DIG
    LDBL_MANT_DIG

    DECIMAL_DIG         // C99
    FLT_DECIMAL_DIG     // C11
    DBL_DECIMAL_DIG     // C11
    LDBL_DECIMAL_DIG    // C11

    FLT_DIG
    DBL_DIG
    LDBL_DIG

    FLT_MIN_EXP
    DBL_MIN_EXP
    LDBL_MIN_EXP

    FLT_MIN_10_EXP
    DBL_MIN_10_EXP
    LDBL_MIN_10_EXP

    FLT_MAX_EXP
    DBL_MAX_EXP
    LDBL_MAX_EXP

    FLT_MAX_10_EXP
    DBL_MAX_10_EXP
    LDBL_MAX_10_EXP

    FLT_MAX
    DBL_MAX
    LDBL_MAX

    FLT_EPSILON
    DBL_EPSILON
    LDBL_EPSILON

    FLT_MIN
    DBL_MIN
    LDBL_MIN

    FLT_TRUE_MIN        // C11
    DBL_TRUE_MIN        // C11
    LDBL_TRUE_MIN       // C11
*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/cfloat>
#else
#  include <__config>

// <float.h> is not provided by libc++
#  if __has_include(<float.h>)
#    include <float.h>
#    ifdef _LIBCPP_FLOAT_H
#      error "If libc++ starts defining <float.h>, the __has_include check should move to libc++'s <float.h>"
#    endif
#  endif

#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#    pragma GCC system_header
#  endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CFLOAT