include/float.h

   1 /* This file exists soley to keep Metrowerks' compilers happy.  The version
   2    used by GCC can be found in /usr/lib/gcc, although it's
   3    not very informative.  */
   4
   5 #ifndef _FLOAT_H_
   6
   7 #if defined(__GNUC__)
   8 #include_next <float.h>
   9
  10 #elif defined(__MWERKS__)
  11 #define _FLOAT_H_
  12
  13 /* APPLE LOCAL begin MW compatibility */
  14 /* Define various characteristics of floating-point types, if needed.  */
  15 #ifndef __FLT_RADIX__
  16 #define __FLT_RADIX__ 2
  17 #endif
  18 #ifndef __FLT_MANT_DIG__
  19 #define __FLT_MANT_DIG__ 24
  20 #endif
  21 #ifndef __FLT_DIG__
  22 #define __FLT_DIG__ 6
  23 #endif
  24 #ifndef __FLT_EPSILON__
  25 #define __FLT_EPSILON__ 1.19209290e-07F
  26 #endif
  27 #ifndef __FLT_MIN__
  28 #define __FLT_MIN__ 1.17549435e-38F
  29 #endif
  30 #ifndef __FLT_MAX__
  31 #define __FLT_MAX__ 3.40282347e+38F
  32 #endif
  33 #ifndef __FLT_MIN_EXP__
  34 #define __FLT_MIN_EXP__ (-125)
  35 #endif
  36 #ifndef __FLT_MIN_10_EXP__
  37 #define __FLT_MIN_10_EXP__ (-37)
  38 #endif
  39 #ifndef __FLT_MAX_EXP__
  40 #define __FLT_MAX_EXP__ 128
  41 #endif
  42 #ifndef __FLT_MAX_10_EXP__
  43 #define __FLT_MAX_10_EXP__ 38
  44 #endif
  45 #ifndef __DBL_MANT_DIG__
  46 #define __DBL_MANT_DIG__ 53
  47 #endif
  48 #ifndef __DBL_DIG__
  49 #define __DBL_DIG__ 15
  50 #endif
  51 #ifndef __DBL_EPSILON__
  52 #define __DBL_EPSILON__ 2.2204460492503131e-16
  53 #endif
  54 #ifndef __DBL_MIN__
  55 #define __DBL_MIN__ 2.2250738585072014e-308
  56 #endif
  57 #ifndef __DBL_MAX__
  58 #define __DBL_MAX__ 1.7976931348623157e+308
  59 #endif
  60 #ifndef __DBL_MIN_EXP__
  61 #define __DBL_MIN_EXP__ (-1021)
  62 #endif
  63 #ifndef __DBL_MIN_10_EXP__
  64 #define __DBL_MIN_10_EXP__ (-307)
  65 #endif
  66 #ifndef __DBL_MAX_EXP__
  67 #define __DBL_MAX_EXP__ 1024
  68 #endif
  69 #ifndef __DBL_MAX_10_EXP__
  70 #define __DBL_MAX_10_EXP__ 308
  71 #endif
  72 #ifndef __LDBL_MANT_DIG__
  73 #define __LDBL_MANT_DIG__ 53
  74 #endif
  75 #ifndef __LDBL_DIG__
  76 #define __LDBL_DIG__ 15
  77 #endif
  78 #ifndef __LDBL_EPSILON__
  79 #define __LDBL_EPSILON__ 2.2204460492503131e-16
  80 #endif
  81 #ifndef __LDBL_MIN__
  82 #define __LDBL_MIN__ 2.2250738585072014e-308
  83 #endif
  84 #ifndef __LDBL_MAX__
  85 #define __LDBL_MAX__ 1.7976931348623157e+308
  86 #endif
  87 #ifndef __LDBL_MIN_EXP__
  88 #define __LDBL_MIN_EXP__ (-1021)
  89 #endif
  90 #ifndef __LDBL_MIN_10_EXP__
  91 #define __LDBL_MIN_10_EXP__ (-307)
  92 #endif
  93 #ifndef __LDBL_MAX_EXP__
  94 #define __LDBL_MAX_EXP__ 1024
  95 #endif
  96 #ifndef __LDBL_MAX_10_EXP__
  97 #define __LDBL_MAX_10_EXP__ 308
  98 #endif
  99 /* APPLE LOCAl end MW compatibility */
 100
 101 /* Copyright (C) 2002 Free Software Foundation, Inc.
 102
 103 This file is part of GNU CC.
 104
 105 GNU CC is free software; you can redistribute it and/or modify
 106 it under the terms of the GNU General Public License as published by
 107 the Free Software Foundation; either version 2, or (at your option)
 108 any later version.
 109
 110 GNU CC is distributed in the hope that it will be useful,
 111 but WITHOUT ANY WARRANTY; without even the implied warranty of
 112 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 113 GNU General Public License for more details.
 114
 115 You should have received a copy of the GNU General Public License
 116 along with GNU CC; see the file COPYING.  If not, write to
 117 the Free Software Foundation, 59 Temple Place - Suite 330,
 118 Boston, MA 02111-1307, USA.  */
 119
 120 /* As a special exception, if you include this header file into source
 121    files compiled by GCC, this header file does not by itself cause
 122    the resulting executable to be covered by the GNU General Public
 123    License.  This exception does not however invalidate any other
 124    reasons why the executable file might be covered by the GNU General
 125    Public License.  */
 126
 127 /*
 128  * ISO C Standard:  5.2.4.2.2  Characteristics of floating types <float.h>
 129  */
 130
 131
 132 /* Radix of exponent representation, b. */
 133 #undef FLT_RADIX
 134 #define FLT_RADIX       __FLT_RADIX__
 135
 136 /* Number of base-FLT_RADIX digits in the significand, p.  */
 137 #undef FLT_MANT_DIG
 138 #undef DBL_MANT_DIG
 139 #undef LDBL_MANT_DIG
 140 #define FLT_MANT_DIG    __FLT_MANT_DIG__
 141 #define DBL_MANT_DIG    __DBL_MANT_DIG__
 142 #define LDBL_MANT_DIG   __LDBL_MANT_DIG__
 143
 144 /* Number of decimal digits, q, such that any floating-point number with q
 145    decimal digits can be rounded into a floating-point number with p radix b
 146    digits and back again without change to the q decimal digits,
 147
 148         p * log10(b)                    if b is a power of 10
 149         floor((p - 1) * log10(b))       otherwise
 150 */
 151 #undef FLT_DIG
 152 #undef DBL_DIG
 153 #undef LDBL_DIG
 154 #define FLT_DIG         __FLT_DIG__
 155 #define DBL_DIG         __DBL_DIG__
 156 #define LDBL_DIG        __LDBL_DIG__
 157
 158 /* Minimum int x such that FLT_RADIX**(x-1) is a normalized float, emin */
 159 #undef FLT_MIN_EXP
 160 #undef DBL_MIN_EXP
 161 #undef LDBL_MIN_EXP
 162 #define FLT_MIN_EXP     __FLT_MIN_EXP__
 163 #define DBL_MIN_EXP     __DBL_MIN_EXP__
 164 #define LDBL_MIN_EXP    __LDBL_MIN_EXP__
 165
 166 /* Minimum negative integer such that 10 raised to that power is in the
 167    range of normalized floating-point numbers,
 168
 169         ceil(log10(b) * (emin - 1))
 170 */
 171 #undef FLT_MIN_10_EXP
 172 #undef DBL_MIN_10_EXP
 173 #undef LDBL_MIN_10_EXP
 174 #define FLT_MIN_10_EXP  __FLT_MIN_10_EXP__
 175 #define DBL_MIN_10_EXP  __DBL_MIN_10_EXP__
 176 #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
 177
 178 /* Maximum int x such that FLT_RADIX**(x-1) is a representable float, emax.  */
 179 #undef FLT_MAX_EXP
 180 #undef DBL_MAX_EXP
 181 #undef LDBL_MAX_EXP
 182 #define FLT_MAX_EXP     __FLT_MAX_EXP__
 183 #define DBL_MAX_EXP     __DBL_MAX_EXP__
 184 #define LDBL_MAX_EXP    __LDBL_MAX_EXP__
 185
 186 /* Maximum integer such that 10 raised to that power is in the range of
 187    representable finite floating-point numbers,
 188
 189         floor(log10((1 - b**-p) * b**emax))
 190 */
 191 #undef FLT_MAX_10_EXP
 192 #undef DBL_MAX_10_EXP
 193 #undef LDBL_MAX_10_EXP
 194 #define FLT_MAX_10_EXP  __FLT_MAX_10_EXP__
 195 #define DBL_MAX_10_EXP  __DBL_MAX_10_EXP__
 196 #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
 197
 198 /* Maximum representable finite floating-point number,
 199
 200         (1 - b**-p) * b**emax
 201 */
 202 #undef FLT_MAX
 203 #undef DBL_MAX
 204 #undef LDBL_MAX
 205 #define FLT_MAX         __FLT_MAX__
 206 #define DBL_MAX         __DBL_MAX__
 207 #define LDBL_MAX        __LDBL_MAX__
 208
 209 /* The difference between 1 and the least value greater than 1 that is
 210    representable in the given floating point type, b**1-p.  */
 211 #undef FLT_EPSILON
 212 #undef DBL_EPSILON
 213 #undef LDBL_EPSILON
 214 #define FLT_EPSILON     __FLT_EPSILON__
 215 #define DBL_EPSILON     __DBL_EPSILON__
 216 #define LDBL_EPSILON    __LDBL_EPSILON__
 217
 218 /* Minimum normalized positive floating-point number, b**(emin - 1).  */
 219 #undef FLT_MIN
 220 #undef DBL_MIN
 221 #undef LDBL_MIN
 222 #define FLT_MIN         __FLT_MIN__
 223 #define DBL_MIN         __DBL_MIN__
 224 #define LDBL_MIN        __LDBL_MIN__
 225
 226 /* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown.  */
 227 /* ??? This is supposed to change with calls to fesetround in <fenv.h>.  */
 228 #undef FLT_ROUNDS
 229 #define FLT_ROUNDS 1
 230
 231 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 232 /* The floating-point expression evaluation method.
 233         -1  indeterminate
 234          0  evaluate all operations and constants just to the range and
 235             precision of the type
 236          1  evaluate operations and constants of type float and double
 237             to the range and precision of the double type, evaluate
 238             long double operations and constants to the range and
 239             precision of the long double type
 240          2  evaluate all operations and constants to the range and
 241             precision of the long double type
 242
 243    ??? This ought to change with the setting of the fp control word;
 244    the value provided by the compiler assumes the widest setting.  */
 245 #undef FLT_EVAL_METHOD
 246 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
 247
 248 /* Number of decimal digits, n, such that any floating-point number in the
 249    widest supported floating type with pmax radix b digits can be rounded
 250    to a floating-point number with n decimal digits and back again without
 251    change to the value,
 252
 253         pmax * log10(b)                 if b is a power of 10
 254         ceil(1 + pmax * log10(b))       otherwise
 255 */
 256 #undef DECIMAL_DIG
 257 #define DECIMAL_DIG     __DECIMAL_DIG__
 258
 259 #endif /* C99 */
 260
 261 #ifdef __cplusplus
 262 extern "C" {
 263 #endif
 264 extern int __fegetfltrounds( void );
 265 #ifdef __cplusplus
 266 }
 267 #endif
 268 #undef FLT_ROUNDS
 269 #define FLT_ROUNDS (__fegetfltrounds ())
 270 /* End of GNU CC file */
 271
 272 /* APPLE LOCAL begin CW compatibility */
 273 /* CodeWarrior defines the following on its own.  */
 274 #undef DECIMAL_DIG
 275 /* APPLE LOCAL end CW compatibility */
 276
 277 #else
 278 #error This file is only for Metrowerks compatibilty.
 279 #endif
 280
 281 #endif /* _FLOAT_H_ */