gmp_lib.reallocate Method

public static void_ptr reallocate(
	void_ptr ptr,
	size_t old_size,
	size_t new_size
)

Public Shared Function reallocate ( 
	ptr As void_ptr,
	old_size As size_t,
	new_size As size_t
) As void_ptr

public:
static void_ptr reallocate(
	void_ptr ptr, 
	size_t old_size, 
	size_t new_size
)

static member reallocate : 
        ptr : void_ptr * 
        old_size : size_t * 
        new_size : size_t -> void_ptr 

Parameters

ptr

Type: Math.Gmp.Nativevoid_ptr
Pointer to previously allocated block.

old_size

Type: Math.Gmp.Nativesize_t
Number of bytes of previously allocated block.

new_size

Type: Math.Gmp.Nativesize_t
New number of bytes of previously allocated block.

Return Value

The block may be moved if necessary or if desired, and in that case the smaller of old_size and new_size bytes must be copied to the new location. The return value is a pointer to the resized block, that being the new location if moved or just ptr if not.

ptr is never NULL, it’s always a previously allocated block. new_size may be bigger or smaller than old_size.

The reallocate function parameter old_size is passed for convenience, but of course it can be ignored if not needed by an implementation. The default functions using malloc and friends for instance don’t use it.

Reference