Function ggml_upscale_impl

ggml.c:5550–5573

// ggml_upscale

static struct ggml_tensor * ggml_upscale_impl(
    struct ggml_context * ctx,
    struct ggml_tensor * a,
    int scale_factor) {
    bool is_node = false;

    if (a->grad) {
        GGML_ASSERT(false); // TODO: implement backward
        is_node = true;
    }

    struct ggml_tensor * result = ggml_new_tensor_4d(ctx, a->type,
            a->ne[0] * scale_factor,
            a->ne[1] * scale_factor,
            a->ne[2], a->ne[3]);

    result->op = GGML_OP_UPSCALE;
    result->op_params[0] = scale_factor;
    result->grad = is_node ? ggml_dup_tensor(ctx, result) : NULL;
    result->src[0] = a;
    result->src[1] = NULL;

    return result;
}

struct ggml_tensor * ggml_upscale(
    struct ggml_context * ctx,