external/bsd/llvm/dist/clang/lib/Headers/float.h

   1 /*===---- float.h - Characteristics of floating point types ----------------===
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to deal
   5  * in the Software without restriction, including without limitation the rights
   6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7  * copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19  * THE SOFTWARE.
  20  *
  21  *===-----------------------------------------------------------------------===
  22  */
  23
  24 #ifndef __FLOAT_H
  25 #define __FLOAT_H
  26
  27 /* If we're on MinGW, fall back to the system's float.h, which might have
  28  * additional definitions provided for Windows.
  29  * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
  30  */
  31 #if (defined(__MINGW32__) || defined(_MSC_VER)) && __STDC_HOSTED__ && \
  32     __has_include_next(<float.h>)
  33 #  include_next <float.h>
  34
  35 /* Undefine anything that we'll be redefining below. */
  36 #  undef FLT_EVAL_METHOD
  37 #  undef FLT_ROUNDS
  38 #  undef FLT_RADIX
  39 #  undef FLT_MANT_DIG
  40 #  undef DBL_MANT_DIG
  41 #  undef LDBL_MANT_DIG
  42 #  undef DECIMAL_DIG
  43 #  undef FLT_DIG
  44 #  undef DBL_DIG
  45 #  undef LDBL_DIG
  46 #  undef FLT_MIN_EXP
  47 #  undef DBL_MIN_EXP
  48 #  undef LDBL_MIN_EXP
  49 #  undef FLT_MIN_10_EXP
  50 #  undef DBL_MIN_10_EXP
  51 #  undef LDBL_MIN_10_EXP
  52 #  undef FLT_MAX_EXP
  53 #  undef DBL_MAX_EXP
  54 #  undef LDBL_MAX_EXP
  55 #  undef FLT_MAX_10_EXP
  56 #  undef DBL_MAX_10_EXP
  57 #  undef LDBL_MAX_10_EXP
  58 #  undef FLT_MAX
  59 #  undef DBL_MAX
  60 #  undef LDBL_MAX
  61 #  undef FLT_EPSILON
  62 #  undef DBL_EPSILON
  63 #  undef LDBL_EPSILON
  64 #  undef FLT_MIN
  65 #  undef DBL_MIN
  66 #  undef LDBL_MIN
  67 #  if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
  68 #    undef FLT_TRUE_MIN
  69 #    undef DBL_TRUE_MIN
  70 #    undef LDBL_TRUE_MIN
  71 #  endif
  72 #endif
  73
  74 /* Characteristics of floating point types, C99 5.2.4.2.2 */
  75
  76 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
  77 #define FLT_ROUNDS (__builtin_flt_rounds())
  78 #define FLT_RADIX __FLT_RADIX__
  79
  80 #define FLT_MANT_DIG __FLT_MANT_DIG__
  81 #define DBL_MANT_DIG __DBL_MANT_DIG__
  82 #define LDBL_MANT_DIG __LDBL_MANT_DIG__
  83
  84 #define DECIMAL_DIG __DECIMAL_DIG__
  85
  86 #define FLT_DIG __FLT_DIG__
  87 #define DBL_DIG __DBL_DIG__
  88 #define LDBL_DIG __LDBL_DIG__
  89
  90 #define FLT_MIN_EXP __FLT_MIN_EXP__
  91 #define DBL_MIN_EXP __DBL_MIN_EXP__
  92 #define LDBL_MIN_EXP __LDBL_MIN_EXP__
  93
  94 #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
  95 #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
  96 #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
  97
  98 #define FLT_MAX_EXP __FLT_MAX_EXP__
  99 #define DBL_MAX_EXP __DBL_MAX_EXP__
 100 #define LDBL_MAX_EXP __LDBL_MAX_EXP__
 101
 102 #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
 103 #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
 104 #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
 105
 106 #define FLT_MAX __FLT_MAX__
 107 #define DBL_MAX __DBL_MAX__
 108 #define LDBL_MAX __LDBL_MAX__
 109
 110 #define FLT_EPSILON __FLT_EPSILON__
 111 #define DBL_EPSILON __DBL_EPSILON__
 112 #define LDBL_EPSILON __LDBL_EPSILON__
 113
 114 #define FLT_MIN __FLT_MIN__
 115 #define DBL_MIN __DBL_MIN__
 116 #define LDBL_MIN __LDBL_MIN__
 117
 118 #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
 119 #  define FLT_TRUE_MIN __FLT_DENORM_MIN__
 120 #  define DBL_TRUE_MIN __DBL_DENORM_MIN__
 121 #  define LDBL_TRUE_MIN __LDBL_DENORM_MIN__
 122 #endif
 123
 124 #endif /* __FLOAT_H */