Function uivector_resize

depends/lodepng/lodepng.cpp:231–244

returns 1 if success, 0 if failure ==> nothing done*/

/*returns 1 if success, 0 if failure ==> nothing done*/
static unsigned uivector_resize(uivector* p, size_t size) {
  size_t allocsize = size * sizeof(unsigned);
  if(allocsize > p->allocsize) {
    size_t newsize = allocsize + (p->allocsize >> 1u);
    void* data = lodepng_realloc(p->data, newsize);
    if(data) {
      p->allocsize = newsize;
      p->data = (unsigned*)data;
    }
    else return 0; /*error: not enough memory*/
  }
  p->size = size;
  return 1; /*success*/
}

static void uivector_init(uivector* p) {
  p->data = NULL;