Function ggml_add_or_set

ggml.c:15370–15376

// functions to change gradients considering the case that input a might be initial gradient with zero value

static struct ggml_tensor * ggml_add_or_set(struct ggml_context * ctx, struct ggml_tensor * a, struct ggml_tensor * b, struct ggml_hash_set zero_table) {
    if (ggml_hash_contains(zero_table, a)) {
        return b;
    } else {
        return ggml_add_impl(ctx, a, b, false);
    }
}

static struct ggml_tensor * ggml_acc_or_set(struct ggml_context * ctx, struct ggml_tensor * a, struct ggml_tensor * b, size_t nb1, size_t nb2, size_t nb3, size_t offset, struct ggml_hash_set zero_table) {
    if (ggml_hash_contains(zero_table, a)) {