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PROLOG | NAME | SYNOPSIS | DESCRIPTION | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
string.h(0P) POSIX Programmer's Manual string.h(0P)
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.
string.h — string operations
#include <string.h>
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.1‐2008, Section
2.2, The Compilation Environment) to enable the visibility of these
symbols in this header.
The <string.h> header shall define NULL and size_t as described in
<stddef.h>.
The <string.h> header shall define the locale_t type as described in
<locale.h>.
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.
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);
Inclusion of the <string.h> header may also make visible all symbols
from <stddef.h>.
The following sections are informative.
None.
None.
None.
locale.h(0p), stddef.h(0p), sys_types.h(0p)
The System Interfaces volume of POSIX.1‐2008, Section 2.2, The
Compilation Environment, memccpy(3p), memchr(3p), memcmp(3p),
memcpy(3p), memmove(3p), memset(3p), strcat(3p), strchr(3p),
strcmp(3p), strcoll(3p), strcpy(3p), strcspn(3p), strdup(3p),
strerror(3p), strlen(3p), strncat(3p), strncmp(3p), strncpy(3p),
strpbrk(3p), strrchr(3p), strsignal(3p), strspn(3p), strstr(3p),
strtok(3p), strxfrm(3p)
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 .
IEEE/The Open Group 2013 string.h(0P)
Pages that refer to this page: wchar.h(0p), wctype.h(0p), memccpy(3p), memchr(3p), memcmp(3p), memcpy(3p), memmove(3p), memset(3p), strcat(3p), strchr(3p), strcmp(3p), strcoll(3p), strcpy(3p), strcspn(3p), strdup(3p), strerror(3p), strlen(3p), strncat(3p), strncmp(3p), strncpy(3p), strpbrk(3p), strrchr(3p), strsignal(3p), strspn(3p), strstr(3p), strtok(3p), strxfrm(3p)