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+/* Copyright (C) 1991,92,93,95,96,97,98,99,2001 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/*
+ * ISO C99 Standard 7.4: Character handling <ctype.h>
+ */
+
+#ifndef _CTYPE_H
+#define _CTYPE_H 1
+
+#include <features.h>
+#include <bits/types.h>
+
+__BEGIN_DECLS
+
+#ifndef _ISbit
+/* These are all the characteristics of characters.
+ If there get to be more than 16 distinct characteristics,
+ many things must be changed that use `unsigned short int's.
+
+ The characteristics are stored always in network byte order (big
+ endian). We define the bit value interpretations here dependent on the
+ machine's byte order. */
+
+# include <endian.h>
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define _ISbit(bit) (1 << (bit))
+# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
+# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
+# endif
+
+enum
+{
+ _ISupper = _ISbit (0), /* UPPERCASE. */
+ _ISlower = _ISbit (1), /* lowercase. */
+ _ISalpha = _ISbit (2), /* Alphabetic. */
+ _ISdigit = _ISbit (3), /* Numeric. */
+ _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
+ _ISspace = _ISbit (5), /* Whitespace. */
+ _ISprint = _ISbit (6), /* Printing. */
+ _ISgraph = _ISbit (7), /* Graphical. */
+ _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
+ _IScntrl = _ISbit (9), /* Control character. */
+ _ISpunct = _ISbit (10), /* Punctuation. */
+ _ISalnum = _ISbit (11) /* Alphanumeric. */
+};
+#endif /* ! _ISbit */
+
+/* These are defined in ctype-info.c.
+ The declarations here must match those in localeinfo.h.
+
+ These point into arrays of 384, so they can be indexed by any `unsigned
+ char' value [0,255]; by EOF (-1); or by any `signed char' value
+ [-128,-1). ISO C requires that the ctype functions work for `unsigned
+ char' values and for EOF; we also support negative `signed char' values
+ for broken old programs. The case conversion arrays are of `int's
+ rather than `unsigned char's because tolower (EOF) must be EOF, which
+ doesn't fit into an `unsigned char'. But today more important is that
+ the arrays are also used for multi-byte character sets. */
+extern __const unsigned short int *__ctype_b; /* Characteristics. */
+extern __const __int32_t *__ctype_tolower; /* Case conversions. */
+extern __const __int32_t *__ctype_toupper; /* Case conversions. */
+
+__asm__(".symver __ctype_b,__ctype_b@GLIBC_2.0");
+__asm__(".symver __ctype_tolower,__ctype_tolower@GLIBC_2.0");
+__asm__(".symver __ctype_toupper,__ctype_toupper@GLIBC_2.0");
+
+#define __isctype(c, type) \
+ (__ctype_b[(int) (c)] & (unsigned short int) type)
+
+#define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */
+#define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */
+
+#define __exctype(name) extern int name (int) __THROW
+
+/* 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_ISOC99
+__exctype (isblank);
+#endif
+
+
+/* Return the lowercase version of C. */
+extern int tolower (int __c) __THROW;
+
+/* Return the uppercase version of C. */
+extern int toupper (int __c) __THROW;
+
+
+#if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
+
+/* Return nonzero iff C is in the ASCII set
+ (i.e., is no more than 7 bits wide). */
+extern int isascii (int __c) __THROW;
+
+/* Return the part of C that is in the ASCII set
+ (i.e., the low-order 7 bits of C). */
+extern int toascii (int __c) __THROW;
+
+/* These are the same as `toupper' and `tolower' except that they do not
+ check the argument for being in the range of a `char'. */
+__exctype (_toupper);
+__exctype (_tolower);
+#endif /* Use SVID or use misc. */
+
+/* This code is needed for the optimized mapping functions. */
+#define __tobody(c, f, a, args) \
+ (__extension__ \
+ ({ int __res; \
+ if (sizeof (c) > 1) \
+ { \
+ if (__builtin_constant_p (c)) \
+ { \
+ int __c = (c); \
+ __res = __c < -128 || __c > 255 ? __c : a[__c]; \
+ } \
+ else \
+ __res = f args; \
+ } \
+ else \
+ __res = a[(int) (c)]; \
+ __res; }))
+
+#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_ISOC99
+# define isblank(c) __isctype((c), _ISblank)
+# endif
+
+# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
+# define tolower(c) __tobody (c, tolower, __ctype_tolower, (c))
+# define toupper(c) __tobody (c, toupper, __ctype_toupper, (c))
+# endif /* Optimizing gcc */
+
+# if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
+# define isascii(c) __isascii (c)
+# define toascii(c) __toascii (c)
+
+# define _tolower(c) ((int) __ctype_tolower[(int) (c)])
+# define _toupper(c) ((int) __ctype_toupper[(int) (c)])
+# endif
+
+#endif /* Not __NO_CTYPE. */
+
+
+#ifdef __USE_GNU
+/* The concept of one static locale per category is not very well
+ thought out. Many applications will need to process its data using
+ information from several different locales. Another application is
+ the implementation of the internationalization handling in the
+ upcoming ISO C++ standard library. To support this another set of
+ the functions using locale data exist which have an additional
+ argument.
+
+ Attention: all these functions are *not* standardized in any form.
+ This is a proof-of-concept implementation. */
+
+/* Structure for reentrant locale using functions. This is an
+ (almost) opaque type for the user level programs. */
+# include <xlocale.h>
+
+/* These definitions are similar to the ones above but all functions
+ take as an argument a handle for the locale which shall be used. */
+# define __isctype_l(c, type, locale) \
+ ((locale)->__ctype_b[(int) (c)] & (unsigned short int) type)
+
+# define __exctype_l(name) extern int name (int, __locale_t) __THROW
+
+/* The following names are all functions:
+ int isCHARACTERISTIC(int c, locale_t *locale);
+ which return nonzero iff C has CHARACTERISTIC.
+ For the meaning of the characteristic names, see the `enum' above. */
+__exctype_l (__isalnum_l);
+__exctype_l (__isalpha_l);
+__exctype_l (__iscntrl_l);
+__exctype_l (__isdigit_l);
+__exctype_l (__islower_l);
+__exctype_l (__isgraph_l);
+__exctype_l (__isprint_l);
+__exctype_l (__ispunct_l);
+__exctype_l (__isspace_l);
+__exctype_l (__isupper_l);
+__exctype_l (__isxdigit_l);
+
+__exctype_l (__isblank_l);
+
+
+/* Return the lowercase version of C in locale L. */
+extern int __tolower_l (int __c, __locale_t __l) __THROW;
+
+/* Return the uppercase version of C. */
+extern int __toupper_l (int __c, __locale_t __l) __THROW;
+
+# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
+# define __tolower_l(c, locale) \
+ __tobody (c, __tolower_l, (locale)->__ctype_tolower, (c, locale))
+# define __toupper_l(c, locale) \
+ __tobody (c, __toupper_l, (locale)->__ctype_toupper, (c, locale))
+# endif /* Optimizing gcc */
+
+
+# ifndef __NO_CTYPE
+# define __isalnum_l(c,l) __isctype_l((c), _ISalnum, (l))
+# define __isalpha_l(c,l) __isctype_l((c), _ISalpha, (l))
+# define __iscntrl_l(c,l) __isctype_l((c), _IScntrl, (l))
+# define __isdigit_l(c,l) __isctype_l((c), _ISdigit, (l))
+# define __islower_l(c,l) __isctype_l((c), _ISlower, (l))
+# define __isgraph_l(c,l) __isctype_l((c), _ISgraph, (l))
+# define __isprint_l(c,l) __isctype_l((c), _ISprint, (l))
+# define __ispunct_l(c,l) __isctype_l((c), _ISpunct, (l))
+# define __isspace_l(c,l) __isctype_l((c), _ISspace, (l))
+# define __isupper_l(c,l) __isctype_l((c), _ISupper, (l))
+# define __isxdigit_l(c,l) __isctype_l((c), _ISxdigit, (l))
+
+# define __isblank_l(c,l) __isctype_l((c), _ISblank, (l))
+
+# if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
+# define __isascii_l(c,l) __isascii(c)
+# define __toascii_l(c,l) __toascii(c)
+# endif
+
+# endif /* Not __NO_CTYPE. */
+
+#endif /* Use GNU. */
+
+__END_DECLS
+
+#endif /* ctype.h */
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