Function reallocate

src/fl/stl/allocator.h:362–384

OPTIMIZED: reallocate() - in-place resize using fl::realloc() Returns the new pointer if successful, nullptr if not supported/failed The caller (fl::vector) handles fallback to allocate-copy-deallocate

    // Returns the new pointer if successful, nullptr if not supported/failed
    // The caller (fl::vector) handles fallback to allocate-copy-deallocate
    pointer reallocate(pointer ptr, fl::size old_count, fl::size new_count) FL_NOEXCEPT {
        if (new_count == 0) {
            if (ptr) {
                deallocate(ptr, old_count);
            }
            return nullptr;
        }

        // Use fl::realloc() for in-place resize
        void* result = fl::realloc(ptr, new_count * sizeof(T));
        if (!result) {
            return nullptr;  // Realloc failed
        }

        T* new_ptr = static_cast<T*>(result);

        // Zero-initialize any newly allocated memory
        if (new_count > old_count) {
            fl::memset(new_ptr + old_count, 0, (new_count - old_count) * sizeof(T));
        }

        return new_ptr;
    }
};

template <typename T> class allocator_psram {