386BSD 0.1 development

[unix-history] / usr / src / lib / libc / gen / isctype.c

/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)isctype.c   5.2 (Berkeley) 6/1/90";
#endif /* LIBC_SCCS and not lint */

#define _ANSI_LIBRARY
#include <ctype.h>

#undef isalnum
isalnum(c)
       int c;
{
       return((_ctype_ + 1)[c] & (_U|_L|_N));
}

#undef isalpha
isalpha(c)
       int c;
{
       return((_ctype_ + 1)[c] & (_U|_L));
}

#undef iscntrl
iscntrl(c)
       int c;
{
       return((_ctype_ + 1)[c] & _C);
}

#undef isdigit
isdigit(c)
       int c;
{
       return((_ctype_ + 1)[c] & _N);
}

#undef isgraph
isgraph(c)
       int c;
{
       return((_ctype_ + 1)[c] & (_P|_U|_L|_N));
}

#undef islower
islower(c)
       int c;
{
       return((_ctype_ + 1)[c] & _L);
}

#undef isprint
isprint(c)
       int c;
{
       return((_ctype_ + 1)[c] & (_P|_U|_L|_N|_B));
}

#undef ispunct
ispunct(c)
       int c;
{
       return((_ctype_ + 1)[c] & _P);
}

#undef isspace
isspace(c)
       int c;
{
       return((_ctype_ + 1)[c] & _S);
}

#undef isupper
isupper(c)
       int c;
{
       return((_ctype_ + 1)[c] & _U);
}

#undef isxdigit
isxdigit(c)
       int c;
{
       return((_ctype_ + 1)[c] & (_N|_X));
}

#undef tolower
tolower(c)
       int c;
{
       return((c) - 'A' + 'a');
}

#undef toupper
toupper(c)
       int c;
{
       return((c) - 'a' + 'A');
}