libcxx/include/float.h

   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_FLOAT_H
  11 #define _LIBCPP_FLOAT_H
  12
  13 /*
  14     float.h synopsis
  15
  16 Macros:
  17
  18     FLT_ROUNDS
  19     FLT_EVAL_METHOD     // C99
  20     FLT_RADIX
  21
  22     FLT_MANT_DIG
  23     DBL_MANT_DIG
  24     LDBL_MANT_DIG
  25
  26     FLT_HAS_SUBNORM     // C11
  27     DBL_HAS_SUBNORM     // C11
  28     LDBL_HAS_SUBNORM    // C11
  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
  73 #include <__config>
  74
  75 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  76 #  pragma GCC system_header
  77 #endif
  78
  79 #if __has_include_next(<float.h>)
  80 #  include_next <float.h>
  81 #endif
  82
  83 #ifdef __cplusplus
  84
  85 #  ifndef FLT_EVAL_METHOD
  86 #    define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
  87 #  endif
  88
  89 #  ifndef DECIMAL_DIG
  90 #    define DECIMAL_DIG __DECIMAL_DIG__
  91 #  endif
  92
  93 #endif // __cplusplus
  94
  95 #endif // _LIBCPP_FLOAT_H