Function ucvector_reserve

dependency/densecrf/examples/lodepng.cpp:213–227

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

/*returns 1 if success, 0 if failure ==> nothing done*/
static unsigned ucvector_reserve(ucvector* p, size_t allocsize)
{
    if(allocsize > p->allocsize)
    {
        size_t newsize = (allocsize > p->allocsize * 2) ? allocsize : (allocsize * 3 / 2);
        void* data = lodepng_realloc(p->data, newsize);
        if(data)
        {
            p->allocsize = newsize;
            p->data = (unsigned char*)data;
        }
        else return 0; /*error: not enough memory*/
    }
    return 1;
}

/*returns 1 if success, 0 if failure ==> nothing done*/
static unsigned ucvector_resize(ucvector* p, size_t size)