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+'\" et
+.TH string.h "0P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+
+.SH NAME
+string.h
+\(em string operations
+.SH SYNOPSIS
+.LP
+.nf
+#include <string.h>
+.fi
+.SH DESCRIPTION
+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 POSIX.1\(hy2008,
+.IR "Section 2.2" ", " "The Compilation Environment")
+to enable the visibility of these symbols in this header.
+.P
+The
+.IR <string.h>
+header shall define NULL and
+.BR size_t
+as described in
+.IR <stddef.h> .
+.P
+The
+.IR <string.h>
+header shall define the
+.BR locale_t
+type as described in
+.IR <locale.h> .
+.P
+The following shall be declared as functions and may also be defined as
+macros. Function prototypes shall be provided for use with ISO\ C standard
+compilers.
+.sp
+.RS 4
+.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 *stpcpy(char *restrict, const char *restrict);
+char *stpncpy(char *restrict, const char *restrict, 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 *);
+int strcoll_l(const char *, const char *, locale_t);
+char *strcpy(char *restrict, const char *restrict);
+size_t strcspn(const char *, const char *);
+char *strdup(const char *);
+char *strerror(int);
+char *strerror_l(int, locale_t);
+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 *strndup(const char *, size_t);
+size_t strnlen(const char *, size_t);
+char *strpbrk(const char *, const char *);
+char *strrchr(const char *, int);
+char *strsignal(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 *restrict, const char *restrict, char **restrict);
+size_t strxfrm(char *restrict, const char *restrict, size_t);
+size_t strxfrm_l(char *restrict, const char *restrict,
+ size_t, locale_t);
+.fi \fR
+.P
+.RE
+.P
+Inclusion of the
+.IR <string.h>
+header may also make visible all symbols from
+.IR <stddef.h> .
+.LP
+.IR "The following sections are informative."
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fB<locale.h>\fP",
+.IR "\fB<stddef.h>\fP",
+.IR "\fB<sys_types.h>\fP"
+.P
+.ad l
+The System Interfaces volume of POSIX.1\(hy2008,
+.IR "Section 2.2" ", " "The Compilation Environment",
+.IR "\fImemccpy\fR\^(\|)",
+.IR "\fImemchr\fR\^(\|)",
+.IR "\fImemcmp\fR\^(\|)",
+.IR "\fImemcpy\fR\^(\|)",
+.IR "\fImemmove\fR\^(\|)",
+.IR "\fImemset\fR\^(\|)",
+.IR "\fIstrcat\fR\^(\|)",
+.IR "\fIstrchr\fR\^(\|)",
+.IR "\fIstrcmp\fR\^(\|)",
+.IR "\fIstrcoll\fR\^(\|)",
+.IR "\fIstrcpy\fR\^(\|)",
+.IR "\fIstrcspn\fR\^(\|)",
+.IR "\fIstrdup\fR\^(\|)",
+.IR "\fIstrerror\fR\^(\|)",
+.IR "\fIstrlen\fR\^(\|)",
+.IR "\fIstrncat\fR\^(\|)",
+.IR "\fIstrncmp\fR\^(\|)",
+.IR "\fIstrncpy\fR\^(\|)",
+.IR "\fIstrpbrk\fR\^(\|)",
+.IR "\fIstrrchr\fR\^(\|)",
+.IR "\fIstrsignal\fR\^(\|)",
+.IR "\fIstrspn\fR\^(\|)",
+.IR "\fIstrstr\fR\^(\|)",
+.IR "\fIstrtok\fR\^(\|)",
+.IR "\fIstrxfrm\fR\^(\|)"
+.ad b
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, Copyright (C) 2013 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
+
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .