Function same_tensor_data

subprojects/llama.cpp/tests/test-gguf.cpp:1046–1082

}

static bool same_tensor_data(const struct ggml_context * orig, const struct ggml_context * read) {
    bool ok = true;

    struct ggml_tensor * t_orig = ggml_get_first_tensor(orig);
    struct ggml_tensor * t_read = ggml_get_first_tensor(read);

    if (std::string(t_read->name) != "GGUF tensor data binary blob") {
        return false;
    }
    t_read = ggml_get_next_tensor(read, t_read);

    while (t_orig) {
        if (!t_read) {
            ok = false;
            break;
        }

        const size_t nbytes = ggml_nbytes(t_orig);
        if (ggml_nbytes(t_read) != nbytes) {
            ok = false;
            break;
        }
        std::vector<char> data_orig(nbytes);
        ggml_backend_tensor_get(t_orig, data_orig.data(), 0, nbytes);
        if (!std::equal(data_orig.data(), data_orig.data() + nbytes, reinterpret_cast<const char *>(t_read->data))) {
            ok = false;
        }

        t_orig = ggml_get_next_tensor(orig, t_orig);
        t_read = ggml_get_next_tensor(read, t_read);
    }
    if (t_read) {
        ok = false;
    }

    return ok;
}

static std::pair<int, int> test_roundtrip(ggml_backend_dev_t dev, const unsigned int seed, const bool only_meta) {
    ggml_backend_t backend = ggml_backend_dev_init(dev, nullptr);