include/values.h

   1 /* Old compatibility names for <limits.h> and <float.h> constants.
   2    Copyright (C) 1995-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* This interface is obsolete.  New programs should use
  20    <limits.h> and/or <float.h> instead of <values.h>.  */
  21
  22 #ifndef _VALUES_H
  23 #define _VALUES_H       1
  24
  25 #include <features.h>
  26
  27 #include <limits.h>
  28
  29 #define _TYPEBITS(type) (sizeof (type) * CHAR_BIT)
  30
  31 #define CHARBITS        _TYPEBITS (char)
  32 #define SHORTBITS       _TYPEBITS (short int)
  33 #define INTBITS         _TYPEBITS (int)
  34 #define LONGBITS        _TYPEBITS (long int)
  35 #define PTRBITS         _TYPEBITS (char *)
  36 #define DOUBLEBITS      _TYPEBITS (double)
  37 #define FLOATBITS       _TYPEBITS (float)
  38
  39 #define MINSHORT        SHRT_MIN
  40 #define MININT          INT_MIN
  41 #define MINLONG         LONG_MIN
  42
  43 #define MAXSHORT        SHRT_MAX
  44 #define MAXINT          INT_MAX
  45 #define MAXLONG         LONG_MAX
  46
  47 #define HIBITS          MINSHORT
  48 #define HIBITL          MINLONG
  49
  50
  51 #include <float.h>
  52
  53 #define MAXDOUBLE       DBL_MAX
  54 #define MAXFLOAT        FLT_MAX
  55 #define MINDOUBLE       DBL_MIN
  56 #define MINFLOAT        FLT_MIN
  57 #define DMINEXP         DBL_MIN_EXP
  58 #define FMINEXP         FLT_MIN_EXP
  59 #define DMAXEXP         DBL_MAX_EXP
  60 #define FMAXEXP         FLT_MAX_EXP
  61
  62
  63 #ifdef __USE_MISC
  64 /* Some systems define this name instead of CHAR_BIT or CHARBITS.  */
  65 # define BITSPERBYTE    CHAR_BIT
  66 #endif
  67
  68 #endif  /* values.h */