.TH LIBSIMPLE_VALIGNED_REALLOCN 3 libsimple .SH NAME libsimple_valigned_reallocn \- reallocate memory and customise alignment .SH SYNOPSIS .nf #include void *libsimple_valigned_reallocn(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP); void *libsimple_envaligned_reallocn(int \fIstatus\fP, void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP); inline void *libsimple_evaligned_reallocn(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP); inline void *libsimple_aligned_reallocn(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */); inline void *libsimple_enaligned_reallocn(int \fIstatus\fP, void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */); inline void *libsimple_ealigned_reallocn(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */); #ifndef valigned_reallocn # define valigned_reallocn libsimple_valigned_reallocn #endif #ifndef envaligned_reallocn # define envaligned_reallocn libsimple_envaligned_reallocn #endif #ifndef evaligned_reallocn # define evaligned_reallocn libsimple_evaligned_reallocn #endif #ifndef aligned_reallocn # define aligned_reallocn libsimple_aligned_reallocn #endif #ifndef enaligned_reallocn # define enaligned_reallocn libsimple_enaligned_reallocn #endif #ifndef ealigned_reallocn # define ealigned_reallocn libsimple_ealigned_reallocn #endif .fi .PP Link with .IR \-lsimple . .SH DESCRIPTION The .BR libsimple_aligned_reallocn (), .BR libsimple_enaligned_reallocn (), and .BR libsimple_ealigned_reallocn () functions are wrappers for the .BR realloc (3) function, they reallocate memory allocated on the heap and return the older pointer or a new pointer with the alignment of .I alignment to the allocated memory of .I N bytes, where .I N is the product of .I n and all following arguments (which should have the type .BR size_t ) up to the first 0; .I n must not be 0. The returned pointer will contain the same content as .IR ptr , but truncated to .I N bytes if it is smaller or with the new bytes uninitialised if it is larger. If a new pointer is returned, rather than .IR ptr , .I ptr is deallocated; .I ptr is not deallocated on failure. The function .BR free (3) shall be called with the returned pointer as input when the allocated memory is no longer needed. .PP The .BR libsimple_enaligned_reallocn () and .BR libsimple_ealigned_reallocn () functions will terminate the process if the memory cannot be allocated, by calling the .BR libsimple_enprintf () and .BR libsimple_eprintf () functions, respectively. On failure, the process's exit value will be .I status if the .BR libsimple_enaligned_reallocn () function is used or .IR libsimple_default_failure_exit (3) if the .BR libsimple_ealigned_reallocn () function is used. .PP The .BR libsimple_valigned_reallocn (), .BR libsimple_envaligned_reallocn (), and .BR libsimple_evaligned_reallocn () functions are versions of the .BR libsimple_aligned_reallocn (), .BR libsimple_enaligned_reallocn (), and .BR libsimple_ealigned_reallocn (), respectively, that use .B va_list instead of variadic arguments. .SH RETURN VALUE The .BR libsimple_valigned_reallocn (), .BR libsimple_envaligned_reallocn (), .BR libsimple_evaligned_reallocn (), .BR libsimple_aligned_reallocn (), .BR libsimple_enaligned_reallocn (), and .BR libsimple_ealigned_reallocn () functions return a pointer to the allocated memory upon success completion; otherwise the .BR libsimple_valigned_reallocn () and .BR libsimple_aligned_reallocn () functions return .B NULL and set .I errno it indicate the error, and the .BR libsimple_envaligned_reallocn (), .BR libsimple_evaligned_reallocn (), .BR libsimple_enaligned_reallocn (), and .BR libsimple_ealigned_reallocn () functions terminated the process. .SH ERRORS The .BR libsimple_valigned_reallocn () and .BR libsimple_aligned_reallocn () functions will fail for the reasons specified for the .BR realloc (3) function, and if: .TP .B EINVAL .I n is 0. .TP .B EINVAL .I alignment is an invalid alignment (usually it needs to be an power of 2). .TP .B ENOSYS The function is not implemented. The function requires non-standard libc functions, and is therefore not supported for all libc implementations. The function is implemented if and only if the macro .B LIBSIMPLE_HAVE_ALIGNED_REALLOC is defined by the library. .PP The .BR libsimple_envaligned_reallocn (), .BR libsimple_evaligned_reallocn (), .BR libsimple_enaligned_reallocn (), and .BR libsimple_ealigned_reallocn () functions will terminate the process on failure. .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_valigned_reallocn (), .br .BR libsimple_envaligned_reallocn (), .br .BR libsimple_evaligned_reallocn (), .br .BR libsimple_aligned_reallocn (), .br .BR libsimple_enaligned_reallocn (), .br .BR libsimple_ealigned_reallocn () T} Thread safety MT-Safe T{ .BR libsimple_valigned_reallocn (), .br .BR libsimple_envaligned_reallocn (), .br .BR libsimple_evaligned_reallocn (), .br .BR libsimple_aligned_reallocn (), .br .BR libsimple_enaligned_reallocn (), .br .BR libsimple_ealigned_reallocn () T} Async-signal safety AS-Safe T{ .BR libsimple_valigned_reallocn (), .br .BR libsimple_envaligned_reallocn (), .br .BR libsimple_evaligned_reallocn (), .br .BR libsimple_aligned_reallocn (), .br .BR libsimple_enaligned_reallocn (), .br .BR libsimple_ealigned_reallocn () 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 HISTORY libsimple 1.2 .SH BUGS None. .SH SEE ALSO .BR libsimple_enmalloc (3), .BR libsimple_mallocz (3), .BR libsimple_vmallocn (3), .BR libsimple_vmalloczn (3), .BR libsimple_encalloc (3), .BR libsimple_vcallocn (3), .BR libsimple_enrealloc (3), .BR libsimple_reallocarray (3), .BR libsimple_vreallocn (3), .BR libsimple_reallocf (3), .BR libsimple_reallocarrayf (3), .BR libsimple_vreallocfn (3), .BR libsimple_aligned_realloc (3), .BR libsimple_aligned_reallocarray (3), .BR libsimple_aligned_reallocf (3), .BR libsimple_aligned_reallocarrayf (3), .BR libsimple_aligned_vreallocfn (3), .BR libsimple_memalign (3), .BR libsimple_memalignz (3), .BR libsimple_vmemalignn (3), .BR libsimple_vmemalignzn (3), .BR libsimple_enposix_memalign (3), .BR libsimple_posix_memalignz (3), .BR libsimple_vposix_memalignn (3), .BR libsimple_vposix_memalignzn (3), .BR libsimple_enaligned_alloc (3), .BR libsimple_aligned_allocz (3), .BR libsimple_valigned_allocn (3), .BR libsimple_valigned_alloczn (3), .BR libsimple_pvalloc (3), .BR libsimple_pvallocz (3), .BR libsimple_vpvallocn (3), .BR libsimple_vpvalloczn (3), .BR libsimple_valloc (3), .BR libsimple_vallocz (3), .BR libsimple_vvallocn (3), .BR libsimple_vvalloczn (3), .BR libsimple_vmemalloc (3), .BR libsimple_varrayalloc (3), .BR malloc (3)