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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /ctype/ctype.h | |
download | glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.bz2 |
initial import
Diffstat (limited to 'ctype/ctype.h')
-rw-r--r-- | ctype/ctype.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/ctype/ctype.h b/ctype/ctype.h new file mode 100644 index 0000000..0f35d2a --- /dev/null +++ b/ctype/ctype.h @@ -0,0 +1,152 @@ +/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * ANSI Standard 4.3: CHARACTER HANDLING <ctype.h> + */ + +#ifndef _CTYPE_H + +#define _CTYPE_H 1 +#include <features.h> + +__BEGIN_DECLS + +/* These are all the characteristics of characters. All the + interdependencies (such as that an alphabetic is an uppercase or a + lowercase) are here. If there get to be more than + (sizeof (unsigned short int) * CHAR_BIT) distinct characteristics, + many things must be changed that use `unsigned short int's. */ +enum +{ + _ISupper = 1 << 0, /* UPPERCASE. */ + _ISlower = 1 << 1, /* lowercase. */ + _IScntrl = 1 << 2, /* Control character. */ + _ISdigit = 1 << 3, /* Numeric. */ + _ISspace = 1 << 4, /* Whitespace. */ + _IShex = 1 << 5, /* A - F, a - f. */ + _ISpunct = 1 << 6, /* Punctuation. */ + _NOgraph = 1 << 7, /* Printing but nongraphical. */ + _ISblank = 1 << 8, /* Blank (usually SPC and TAB). */ + _ISalpha = 1 << 9, /* Alphabetic. */ + _ISalnum = _ISalpha | _ISdigit, /* Alphanumeric. */ + _ISxdigit = _ISdigit | _IShex, /* Hexadecimal numeric. */ + _ISgraph = _ISalnum | _ISpunct, /* Graphical. */ + _ISprint = _ISgraph | _NOgraph /* Printing. */ +}; + +/* These are defined in localeinfo.c. + The declarations here must match those in localeinfo.h. + + These point to the second element ([1]) of arrays of size (UCHAR_MAX + 1). + EOF is -1, so [EOF] is the first element of the original array. + ANSI requires that the ctype functions work for `unsigned char' values + and for EOF. The case conversion arrays are of `short int's rather than + `unsigned char's because tolower (EOF) must be EOF, which doesn't fit + into an `unsigned char'. */ +extern __const unsigned short int *__ctype_b; /* Characteristics. */ +extern __const short int *__ctype_tolower; /* Case conversions. */ +extern __const short int *__ctype_toupper; /* Case conversions. */ + +#define __isctype(c, type) \ + (__ctype_b[(int) (c)] & (unsigned short int) type) + +#define __isascii(c) (((c) & (1 << 7)) == 0) /* If high bit is set. */ +#define __toascii(c) ((c) & 0x7f) /* Mask off high bit. */ + +#define __tolower(c) ((int) __ctype_tolower[(int) (c)]) +#define __toupper(c) ((int) __ctype_toupper[(int) (c)]) + +#define __exctype(name) extern int name __P ((int)) + +/* The following names are all functions: + int isCHARACTERISTIC(int c); + which return nonzero iff C has CHARACTERISTIC. + For the meaning of the characteristic names, see the `enum' above. */ +__exctype (isalnum); +__exctype (isalpha); +__exctype (iscntrl); +__exctype (isdigit); +__exctype (islower); +__exctype (isgraph); +__exctype (isprint); +__exctype (ispunct); +__exctype (isspace); +__exctype (isupper); +__exctype (isxdigit); + +#ifdef __USE_GNU +__exctype (isblank); +#endif + + +/* Return the lowercase version of C. */ +extern int tolower __P ((int __c)); + +/* Return the uppercase version of C. */ +extern int toupper __P ((int __c)); + + +#if defined(__USE_SVID) || defined(__USE_MISC) + +/* Return nonzero iff C is in the ASCII set + (i.e., is no more than 7 bits wide). */ +extern int isascii __P ((int __c)); + +/* Return the part of C that is in the ASCII set + (i.e., the low-order 7 bits of C). */ +extern int toascii __P ((int __c)); + +#endif /* Use SVID or use misc. */ + +#ifdef __USE_SVID +/* These are the same as `toupper' and and `tolower'. */ +__exctype (_toupper); +__exctype (_tolower); +#endif + +#ifndef __NO_CTYPE +#define isalnum(c) __isctype((c), _ISalnum) +#define isalpha(c) __isctype((c), _ISalpha) +#define iscntrl(c) __isctype((c), _IScntrl) +#define isdigit(c) __isctype((c), _ISdigit) +#define islower(c) __isctype((c), _ISlower) +#define isgraph(c) __isctype((c), _ISgraph) +#define isprint(c) __isctype((c), _ISprint) +#define ispunct(c) __isctype((c), _ISpunct) +#define isspace(c) __isctype((c), _ISspace) +#define isupper(c) __isctype((c), _ISupper) +#define isxdigit(c) __isctype((c), _ISxdigit) + +#ifdef __USE_GNU +#define isblank(c) __isctype((c), _ISblank) +#endif + +#define tolower(c) __tolower(c) +#define toupper(c) __toupper(c) + +#if defined(__USE_SVID) || defined(__USE_MISC) +#define isascii(c) __isascii(c) +#define toascii(c) __toascii(c) +#endif + +#endif /* Not __NO_CTYPE. */ + +__END_DECLS + +#endif /* ctype.h */ |