Get functions used for allocating and freeing memory.
@param pmalloc Pointer to malloc function output variable, or NULL
@param prealloc Pointer to realloc function output variable, or NULL
@param pfree Pointer to free function output variable, or NULL
Get functions used for allocating and freeing memory.
@param pmalloc Pointer to malloc function output variable, or NULL @param prealloc Pointer to realloc function output variable, or NULL @param pfree Pointer to free function output variable, or NULL