/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _STRINGS_H

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#define _STRINGS_H 1

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#include <features.h>

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#define __need_size_t

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#include <stddef.h>

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/* Tell the caller that we provide correct C++ prototypes. */

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#if defined __cplusplus && __GNUC_PREREQ (4, 4)

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# define __CORRECT_ISO_CPP_STRINGS_H_PROTO

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#endif

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__BEGIN_DECLS

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#if defined __USE_MISC || !defined __USE_XOPEN2K8

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/* Compare N bytes of S1 and S2 (same as memcmp). */

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extern int bcmp (const void *__s1, const void *__s2, size_t __n)

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__THROW __attribute_pure__ __nonnull ((1, 2));

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/* Copy N bytes of SRC to DEST (like memmove, but args reversed). */

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extern void bcopy (const void *__src, void *__dest, size_t __n)

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__THROW __nonnull ((1, 2));

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/* Set N bytes of S to 0. */

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extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1));

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/* Find the first occurrence of C in S (same as strchr). */

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# ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO

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extern "C++"

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{

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extern char *index (char *__s, int __c)

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__THROW __asm ("index") __attribute_pure__ __nonnull ((1));

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extern const char *index (const char *__s, int __c)

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__THROW __asm ("index") __attribute_pure__ __nonnull ((1));

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# if defined __OPTIMIZE__

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__extern_always_inline char *

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index (char *__s, int __c) __THROW

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{

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return __builtin_index (__s, __c);

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}

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__extern_always_inline const char *

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index (const char *__s, int __c) __THROW

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{

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return __builtin_index (__s, __c);

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}

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# endif

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}

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# else

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extern char *index (const char *__s, int __c)

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__THROW __attribute_pure__ __nonnull ((1));

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# endif

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/* Find the last occurrence of C in S (same as strrchr). */

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# ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO

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extern "C++"

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{

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extern char *rindex (char *__s, int __c)

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__THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));

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extern const char *rindex (const char *__s, int __c)

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__THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));

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# if defined __OPTIMIZE__

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__extern_always_inline char *

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rindex (char *__s, int __c) __THROW

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{

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return __builtin_rindex (__s, __c);

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}

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__extern_always_inline const char *

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rindex (const char *__s, int __c) __THROW

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{

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return __builtin_rindex (__s, __c);

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}

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# endif

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}

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# else

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extern char *rindex (const char *__s, int __c)

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__THROW __attribute_pure__ __nonnull ((1));

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# endif

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#endif

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#if defined __USE_MISC || !defined __USE_XOPEN2K8 || defined __USE_XOPEN2K8XSI

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/* Return the position of the first bit set in I, or 0 if none are set.

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The least-significant bit is position 1, the most-significant 32. */

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extern int ffs (int __i) __THROW __attribute_const__;

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#endif

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/* The following two functions are non-standard but necessary for non-32 bit

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platforms. */

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# ifdef __USE_MISC

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extern int ffsl (long int __l) __THROW __attribute_const__;

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__extension__ extern int ffsll (long long int __ll)

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__THROW __attribute_const__;

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# endif

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/* Compare S1 and S2, ignoring case. */

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extern int strcasecmp (const char *__s1, const char *__s2)

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__THROW __attribute_pure__ __nonnull ((1, 2));

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/* Compare no more than N chars of S1 and S2, ignoring case. */

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extern int strncasecmp (const char *__s1, const char *__s2, size_t __n)

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__THROW __attribute_pure__ __nonnull ((1, 2));

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#ifdef __USE_XOPEN2K8

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/* POSIX.1-2008 extended locale interface (see locale.h). */

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# include <bits/types/locale_t.h>

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/* Compare S1 and S2, ignoring case, using collation rules from LOC. */

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extern int strcasecmp_l (const char *__s1, const char *__s2, locale_t __loc)

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__THROW __attribute_pure__ __nonnull ((1, 2, 3));

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/* Compare no more than N chars of S1 and S2, ignoring case, using

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collation rules from LOC. */

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extern int strncasecmp_l (const char *__s1, const char *__s2,

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size_t __n, locale_t __loc)

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__THROW __attribute_pure__ __nonnull ((1, 2, 4));

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#endif

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__END_DECLS

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#if __GNUC_PREREQ (3,4) && __USE_FORTIFY_LEVEL > 0 \

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&& defined __fortify_function

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/* Functions with security checks. */

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# if defined __USE_MISC || !defined __USE_XOPEN2K8

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# include <bits/strings_fortified.h>

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# endif

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#endif

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#endif /* strings.h */

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