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+// -*- C++ -*-
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+//===--------------------------- string.h ---------------------------------===//
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+//
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+// The LLVM Compiler Infrastructure
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+//
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+// This file is distributed under the University of Illinois Open Source
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+// License. See LICENSE.TXT for details.
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+//
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+//===----------------------------------------------------------------------===//
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+
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+#ifndef _LIBCPP_STRING_H
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+#define _LIBCPP_STRING_H
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+
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+/*
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+ string.h synopsis
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+
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+Macros:
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+
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+ NULL
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+
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+Types:
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+
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+ size_t
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+
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+void* memcpy(void* restrict s1, const void* restrict s2, size_t n);
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+void* memmove(void* s1, const void* s2, size_t n);
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+char* strcpy (char* restrict s1, const char* restrict s2);
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+char* strncpy(char* restrict s1, const char* restrict s2, size_t n);
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+char* strcat (char* restrict s1, const char* restrict s2);
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+char* strncat(char* restrict s1, const char* restrict s2, size_t n);
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+int memcmp(const void* s1, const void* s2, size_t n);
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+int strcmp (const char* s1, const char* s2);
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+int strncmp(const char* s1, const char* s2, size_t n);
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+int strcoll(const char* s1, const char* s2);
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+size_t strxfrm(char* restrict s1, const char* restrict s2, size_t n);
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+const void* memchr(const void* s, int c, size_t n);
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+ void* memchr( void* s, int c, size_t n);
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+const char* strchr(const char* s, int c);
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+ char* strchr( char* s, int c);
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+size_t strcspn(const char* s1, const char* s2);
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+const char* strpbrk(const char* s1, const char* s2);
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+ char* strpbrk( char* s1, const char* s2);
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+const char* strrchr(const char* s, int c);
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+ char* strrchr( char* s, int c);
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+size_t strspn(const char* s1, const char* s2);
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+const char* strstr(const char* s1, const char* s2);
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+ char* strstr( char* s1, const char* s2);
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+char* strtok(char* restrict s1, const char* restrict s2);
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+void* memset(void* s, int c, size_t n);
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+char* strerror(int errnum);
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+size_t strlen(const char* s);
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+
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+*/
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+
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+#include <__config>
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+
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+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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+#pragma GCC system_header
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+#endif
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+
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+#include_next <string.h>
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+
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+// MSVCRT, GNU libc and its derivates already have the correct prototype in
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+// <string.h> if __cplusplus is defined. This macro can be defined by users if
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+// their C library provides the right signature.
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+#if defined(__GLIBC__) || defined(_LIBCPP_MSVCRT) || defined(__sun__) || \
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+ defined(_STRING_H_CPLUSPLUS_98_CONFORMANCE_)
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+#define _LIBCPP_STRING_H_HAS_CONST_OVERLOADS
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+#endif
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+
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+#if defined(__cplusplus) && !defined(_LIBCPP_STRING_H_HAS_CONST_OVERLOADS) && defined(_LIBCPP_PREFERRED_OVERLOAD)
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+extern "C++" {
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+inline _LIBCPP_INLINE_VISIBILITY
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+char* __libcpp_strchr(const char* __s, int __c) {return (char*)strchr(__s, __c);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+const char* strchr(const char* __s, int __c) {return __libcpp_strchr(__s, __c);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+ char* strchr( char* __s, int __c) {return __libcpp_strchr(__s, __c);}
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+
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+inline _LIBCPP_INLINE_VISIBILITY
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+char* __libcpp_strpbrk(const char* __s1, const char* __s2) {return (char*)strpbrk(__s1, __s2);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+const char* strpbrk(const char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+ char* strpbrk( char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);}
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+
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+inline _LIBCPP_INLINE_VISIBILITY
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+char* __libcpp_strrchr(const char* __s, int __c) {return (char*)strrchr(__s, __c);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+const char* strrchr(const char* __s, int __c) {return __libcpp_strrchr(__s, __c);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+ char* strrchr( char* __s, int __c) {return __libcpp_strrchr(__s, __c);}
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+
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+inline _LIBCPP_INLINE_VISIBILITY
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+void* __libcpp_memchr(const void* __s, int __c, size_t __n) {return (void*)memchr(__s, __c, __n);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+const void* memchr(const void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+ void* memchr( void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);}
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+
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+inline _LIBCPP_INLINE_VISIBILITY
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+char* __libcpp_strstr(const char* __s1, const char* __s2) {return (char*)strstr(__s1, __s2);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+const char* strstr(const char* __s1, const char* __s2) {return __libcpp_strstr(__s1, __s2);}
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+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD
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+ char* strstr( char* __s1, const char* __s2) {return __libcpp_strstr(__s1, __s2);}
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+}
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+#endif
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+
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+#endif // _LIBCPP_STRING_H
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Richard Smith