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authorMattias Andrée <maandree@kth.se>2018-11-07 22:18:04 +0100
committerMattias Andrée <maandree@kth.se>2018-11-07 22:18:04 +0100
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parentAdd arrayalloc man page (diff)
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Move section 3 man pages to man3/ and add libsimple.h.0
Signed-off-by: Mattias Andrée <maandree@kth.se>
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-.TH LIBSIMPLE_ENSTRNDUP 3 2018-10-27 libsimple
-.SH NAME
-libsimple_enstrndup, libsimple_strndupa \- duplicate the beginning of a string
-.SH SYNOPSIS
-.nf
-#include <libsimple.h>
-
-char *libsimple_strndupa(const char *\fIs\fP, size_t \fIn\fP);
-char *libsimple_enstrndup(int \fIstatus\fP, const char *\fIs\fP, size_t \fIn\fP);
-static inline char *libsimple_estrndup(const char *\fIs\fP, size_t \fIn\fP);
-
-#ifndef strndupa
-# define strndupa libsimple_strndupa
-#endif
-#ifndef enstrndup
-# define enstrndup libsimple_enstrndup
-#endif
-#ifndef estrndup
-# define estrndup libsimple_estrndup
-#endif
-.fi
-.PP
-Link with
-.IR \-lsimple .
-.SH DESCRIPTION
-The
-.BR libsimple_enstrndup ()
-and
-.BR libsimple_estrndup ()
-functions are versions of the
-.BR strndup (3)
-function that call the
-.BR libsimple_enprintf (3)
-function on failure, causing the process to print
-an error message and exit. See
-.BR libsimple_enprintf (3)
-for more information.
-.PP
-The
-.BR libsimple_strndupa ()
-function is implemented as a macro and is a version
-of the
-.BR strndup (3)
-function that uses allocates the memory on the stack
-rather than on the heap, causing the return pointer
-to become invalid when the calling function returns.
-It is only available when compling with GCC or Clang.
-.SH RETURN VALUE
-Upon successful completion, the
-.BR libsimple_strndupa (),
-.BR libsimple_enstrndup (),
-and
-.BR libsimple_estrndup ()
-functions return a non-null pointer, on failure the
-.BR libsimple_enstrndup (),
-and
-.BR libsimple_estrndup ()
-functions exit the process. The
-.BR libsimple_strndupa ()
-function cannot fail, however the kernel
-can kill the thread, and possibly the process, with a
-.B SIGSEGV
-signal if the memory cannot be allocated.
-.PP
-The returned pointer should be deallocated when it
-is no longer needed, except for the pointer returned
-by the
-.BR libsimple_strndupa ()
-function, it is automatically deallocated when the
-calling function returns.
-.SH ERRORS
-None.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lb lb lb
-l l l.
-Interface Attribute Value
-T{
-.BR libsimple_strndupa (),
-.br
-.BR libsimple_enstrndup (),
-.br
-.BR libsimple_estrndup (),
-T} Thread safety MT-Safe
-T{
-.BR libsimple_strndupa (),
-.br
-.BR libsimple_enstrndup (),
-.br
-.BR libsimple_estrndup (),
-T} Async-signal safety AS-Safe
-T{
-.BR libsimple_strndupa (),
-.br
-.BR libsimple_enstrndup (),
-.br
-.BR libsimple_estrndup (),
-T} Async-cancel safety AC-Safe
-.TE
-.SH EXAMPLES
-None.
-.SH APPLICATION USAGE
-None.
-.SH RATIONALE
-None.
-.SH FUTURE DIRECTIONS
-None.
-.SH NOTES
-None.
-.SH BUGS
-None.
-.SH SEE ALSO
-.BR libsimple_enstrdup (3),
-.BR libsimple_memdup (3),
-.BR libsimple_aligned_memdup (3),
-.BR strndup (3),
-.BR strdup (3)