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- /* This is file ISCTYPE.C */
- /* This file may have been modified by DJ Delorie (Jan 1991). If so,
- ** these modifications are Coyright (C) 1993 DJ Delorie, 24 Kirsten Ave,
- ** Rochester NH, 03867-2954, USA.
- */
-
- /*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #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;
- {
- if ((c >= 'A') && (c <= 'Z'))
- return((c) - 'A' + 'a');
- else
- return c;
- }
-
- #undef toupper
- toupper(c)
- int c;
- {
- if ((c >= 'a') && (c <= 'z'))
- return((c) - 'a' + 'A');
- else
- return c;
- }
-