include/ctype.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program 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
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _CTYPE_H_
  20 #define _CTYPE_H_
  21
  22 #define isalnum(c)  (isalpha(c) || isdigit(c))
  23 #define isalpha(c)  (isupper(c) || islower(c))
  24 #define iscntrl(c)  (c<' ')
  25 #define isdigit(c)  (c>='0' && c<='9')
  26 #define isgraph(c)  (isalnum(c) && c!=' ') /** @todo please do it the right way */
  27 #define islower(c)  (c>='a' && c<='z')
  28 #define isprint(c)  (c>=' ')
  29 #define ispunct(c)  (isprint(c) && !isalnum(c)) /** @todo is that right? **/
  30 #define isspace(c)  (c==' ' || c=='\f' || c=='\n' || c=='\r' || c=='\t' || c=='\v')
  31 #define isupper(c)  (c>='A' && c<='Z')
  32 #define isxdigit(c) (isdigit(c) || (c>='A' && c<='F') || (c>='a' && c<='f'))
  33
  34 #define tolower(c)  (isupper(c)?c+('a'-'A'):c)
  35 #define toupper(c)  (islower(c)?c-('a'-'A'):c)
  36
  37 #endif