1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_CFLOAT
11#define _LIBCPP_CFLOAT
12
13/*
14 cfloat synopsis
15
16Macros:
17
18 FLT_ROUNDS
19 FLT_EVAL_METHOD // C99
20 FLT_RADIX
21
22 FLT_HAS_SUBNORM // C11
23 DBL_HAS_SUBNORM // C11
24 LDBL_HAS_SUBNORM // C11
25
26 FLT_MANT_DIG
27 DBL_MANT_DIG
28 LDBL_MANT_DIG
29
30 DECIMAL_DIG // C99
31 FLT_DECIMAL_DIG // C11
32 DBL_DECIMAL_DIG // C11
33 LDBL_DECIMAL_DIG // C11
34
35 FLT_DIG
36 DBL_DIG
37 LDBL_DIG
38
39 FLT_MIN_EXP
40 DBL_MIN_EXP
41 LDBL_MIN_EXP
42
43 FLT_MIN_10_EXP
44 DBL_MIN_10_EXP
45 LDBL_MIN_10_EXP
46
47 FLT_MAX_EXP
48 DBL_MAX_EXP
49 LDBL_MAX_EXP
50
51 FLT_MAX_10_EXP
52 DBL_MAX_10_EXP
53 LDBL_MAX_10_EXP
54
55 FLT_MAX
56 DBL_MAX
57 LDBL_MAX
58
59 FLT_EPSILON
60 DBL_EPSILON
61 LDBL_EPSILON
62
63 FLT_MIN
64 DBL_MIN
65 LDBL_MIN
66
67 FLT_TRUE_MIN // C11
68 DBL_TRUE_MIN // C11
69 LDBL_TRUE_MIN // C11
70*/
71
72#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
73# include <__cxx03/cfloat>
74#else
75# include <__config>
76
77# include <float.h>
78
79# ifndef _LIBCPP_FLOAT_H
80# error <cfloat> tried including <float.h> but didn't find libc++'s <float.h> header. \
81 This usually means that your header search paths are not configured properly. \
82 The header search paths should contain the C++ Standard Library headers before \
83 any C Standard Library, and you are probably using compiler flags that make that \
84 not be the case.
85# endif
86
87# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
88# pragma GCC system_header
89# endif
90#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
91
92#endif // _LIBCPP_CFLOAT
93