FENIX_libc/include/ctype.h

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#ifndef _CTYPE_H
#define _CTYPE_H
#include <types/locale_t.h>
/* C standard functions */
int isalnum(int);
int isalpha(int);
int isblank(int);
int iscntrl(int);
int isdigit(int);
int isgraph(int);
int islower(int);
int isprint(int);
int ispunct(int);
int isspace(int);
int isupper(int);
int isxdigit(int);
/* POSIX extensions */
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#ifdef _POSIX_C_SOURCE
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int isalnum_l(int, locale_t);
int isalpha_l(int, locale_t);
int isblank_l(int, locale_t);
int iscntrl_l(int, locale_t);
int isdigit_l(int, locale_t);
int isgraph_l(int, locale_t);
int islower_l(int, locale_t);
int isprint_l(int, locale_t);
int ispunct_l(int, locale_t);
int isspace_l(int, locale_t);
int isupper_l(int, locale_t);
int isxdigit_l(int, locale_t);
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#endif
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/* C standard stuff */
int tolower(int);
int toupper(int);
/* POSIX extensions */
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#ifdef _POSIX_C_SOURCE
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int tolower_l(int, locale_t);
int toupper_l(int, locale_t);
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#endif
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#ifdef _XOPEN_SOURCE
/* Obsolete XSI stuff */
int isascii(int);
int toascii(int);
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/* Obsolete XSI macros */
#define _toupper(x) toupper(x)
#define _tolower(x) tolower(x)
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#endif
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#endif