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  1. /*-------------------------------------------------------------------------
  2.   ctype.h - ANSI functions forward declarations
  3.  
  4.              Written By -  Sandeep Dutta . sandeep.dutta@usa.net (1998)
  5.  
  6.    Revisions:
  7.    1.0 - June.1.2000 1.0 - Bela Torok / bela.torok@kssg.ch
  8.    order: function definitions -> macros
  9.    corretced macro: isalpha(c)
  10.    added macros: _tolower(c), _toupper(c), tolower(c), toupper(c) toascii(c)
  11.  
  12.  
  13.    This program is free software; you can redistribute it and/or modify it
  14.    under the terms of the GNU General Public License as published by the
  15.    Free Software Foundation; either version 2, or (at your option) any
  16.    later version.
  17.  
  18.    This program is distributed in the hope that it will be useful,
  19.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21.    GNU General Public License for more details.
  22.  
  23.    You should have received a copy of the GNU General Public License
  24.    along with this program; if not, write to the Free Software
  25.    Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26.  
  27.    In other words, you are welcome to use, share and improve this program.
  28.    You are forbidden to forbid anyone else to use, share and improve
  29.    what you give them.   Help stamp out software-hoarding!
  30. -------------------------------------------------------------------------*/
  31.  
  32. #ifndef __SDC51_CTYPE_H
  33. #define __SDC51_CTYPE_H 1
  34.  
  35. #include <sdcc-lib.h>
  36.  
  37. #ifdef SDCC_STACK_AUTO
  38.  
  39. extern char  iscntrl   (unsigned char ) _REENTRANT ;
  40. extern char  isdigit   (unsigned char ) _REENTRANT ;
  41. extern char  isgraph   (unsigned char ) _REENTRANT ;
  42. extern char  islower   (unsigned char ) _REENTRANT ;
  43. extern char  isupper   (unsigned char ) _REENTRANT ;
  44. extern char  isprint   (unsigned char ) _REENTRANT ;
  45. extern char  ispunct   (unsigned char ) _REENTRANT ;
  46. extern char  isspace   (unsigned char ) _REENTRANT ;
  47. extern char  isxdigit  (unsigned char ) _REENTRANT ;
  48.  
  49. #else
  50.  
  51. extern char  iscntrl   (unsigned char )  ;
  52. extern char  isdigit   (unsigned char )  ;
  53. extern char  isgraph   (unsigned char )  ;
  54. extern char  islower   (unsigned char )  ;
  55. extern char  isupper   (unsigned char )  ;
  56. extern char  isprint   (unsigned char )  ;
  57. extern char  ispunct   (unsigned char )  ;
  58. extern char  isspace   (unsigned char )  ;
  59. extern char  isxdigit  (unsigned char )  ;
  60.  
  61. #endif
  62.  
  63. #define isalnum(c)   (isalpha(c) || isdigit(c))
  64. #define isalpha(c)   (isupper(c) || islower(c))
  65.  
  66. /* ANSI versions of _tolower & _toupper
  67. #define _tolower(c)  ((c) - ('a' - 'A'))
  68. #define _toupper(c)  ((c) + ('a' - 'A'))
  69. */
  70.  
  71. /* The _tolower & _toupper functions below can applied to any
  72.    alpha characters regardless of the case (upper or lower) */
  73. #define _tolower(c)  ((c) | ('a' - 'A'))
  74. #define _toupper(c)  ((c) & ~('a' - 'A'))
  75.  
  76. #define tolower(c)  ((isupper(c)) ? _tolower(c) : (c))
  77. #define toupper(c)  ((islower(c)) ? _toupper(c) : (c))
  78. #define toascii(c)  ((c) & 0x7F)
  79.  
  80. #endif
  81.