uspace/lib/posix/src/ctype.c

   1 /*
   2  * Copyright (c) 2011 Jiri Zarevucky
   3  * Copyright (c) 2011 Petr Koupy
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * - The name of the author may not be used to endorse or promote products
  16  *   derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 /** @addtogroup libposix
  31  * @{
  32  */
  33 /** @file Character classification.
  34  */
  35
  36 #include <ctype.h>
  37
  38 /**
  39  * Checks whether character is ASCII. (obsolete)
  40  *
  41  * @param c Character to inspect.
  42  * @return Non-zero if character match the definition, zero otherwise.
  43  */
  44 int isascii(int c)
  45 {
  46         return c >= 0 && c < 128;
  47 }
  48
  49 /**
  50  * Converts argument to a 7-bit ASCII character. (obsolete)
  51  *
  52  * @param c Character to convert.
  53  * @return Coverted character.
  54  */
  55 int toascii(int c)
  56 {
  57         return c & 0x7F;
  58 }
  59
  60 /** @}
  61  */