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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "<string.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" <string.h>
+.SH NAME
+string.h \- string operations
+.SH SYNOPSIS
+.LP
+\fB#include <string.h>\fP
+.SH DESCRIPTION
+.LP
+Some of the functionality described on this reference page extends
+the ISO\ C standard. Applications shall define
+the appropriate feature test macro (see the System Interfaces volume
+of IEEE\ Std\ 1003.1-2001, Section 2.2, The Compilation Environment)
+to enable the visibility of these symbols in this
+header.
+.LP
+The \fI<string.h>\fP header shall define the following:
+.TP 7
+NULL
+Null pointer constant.
+.TP 7
+\fBsize_t\fP
+As described in \fI<stddef.h>\fP .
+.sp
+.LP
+The following shall be declared as functions and may also be defined
+as macros. Function prototypes shall be provided.
+.sp
+.RS
+.nf
+
+\fB
+void *memccpy(void *restrict, const void *restrict, int, size_t);
+
+void *memchr(const void *, int, size_t);
+int memcmp(const void *, const void *, size_t);
+void *memcpy(void *restrict, const void *restrict, size_t);
+void *memmove(void *, const void *, size_t);
+void *memset(void *, int, size_t);
+char *strcat(char *restrict, const char *restrict);
+char *strchr(const char *, int);
+int strcmp(const char *, const char *);
+int strcoll(const char *, const char *);
+char *strcpy(char *restrict, const char *restrict);
+size_t strcspn(const char *, const char *);
+
+char *strdup(const char *);
+
+char *strerror(int);
+
+int *strerror_r(int, char *, size_t);
+
+size_t strlen(const char *);
+char *strncat(char *restrict, const char *restrict, size_t);
+int strncmp(const char *, const char *, size_t);
+char *strncpy(char *restrict, const char *restrict, size_t);
+char *strpbrk(const char *, const char *);
+char *strrchr(const char *, int);
+size_t strspn(const char *, const char *);
+char *strstr(const char *, const char *);
+char *strtok(char *restrict, const char *restrict);
+
+char *strtok_r(char *, const char *, char **);
+
+size_t strxfrm(char *restrict, const char *restrict, size_t);
+\fP
+.fi
+.RE
+.LP
+Inclusion of the \fI<string.h>\fP header may also make visible all
+symbols from \fI<stddef.h>\fP.
+.LP
+\fIThe following sections are informative.\fP
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fI<stddef.h>\fP , \fI<sys/types.h>\fP , the System
+Interfaces volume of IEEE\ Std\ 1003.1-2001, \fImemccpy\fP(), \fImemchr\fP(),
+\fImemcmp\fP(), \fImemcpy\fP(), \fImemmove\fP(), \fImemset\fP(), \fIstrcat\fP(),
+\fIstrchr\fP(), \fIstrcmp\fP(), \fIstrcoll\fP(), \fIstrcpy\fP(), \fIstrcspn\fP(),
+\fIstrdup\fP(), \fIstrerror\fP(), \fIstrlen\fP(), \fIstrncat\fP(),
+\fIstrncmp\fP(), \fIstrncpy\fP(), \fIstrpbrk\fP(), \fIstrrchr\fP(),
+\fIstrspn\fP(), \fIstrstr\fP(), \fIstrtok\fP(), \fIstrxfrm\fP()
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .