@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
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JavaScript
/**
* @license
* Copyright 2020 Google LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
import { ENGINE } from '../engine';
import { Diag } from '../kernel_names';
import { convertToTensor } from '../tensor_util_env';
import { op } from './operation';
/**
* Returns a diagonal tensor with a given diagonal values.
*
* Given a diagonal, this operation returns a tensor with the diagonal and
* everything else padded with zeros.
*
* Assume the input has dimensions `[D1,..., Dk]`, then the output is a tensor
* of rank 2k with dimensions `[D1,..., Dk, D1,..., Dk]`
*
* ```js
* const x = tf.tensor1d([1, 2, 3, 4]);
*
* tf.diag(x).print()
* ```
* ```js
* const x = tf.tensor1d([1, 2, 3, 4, 5, 6, 6, 8], [4, 2])
*
* tf.diag(x).print()
* ```
* @param x The input tensor.
*/
function diag_(x) {
const $x = convertToTensor(x, 'x', 'diag');
const inputs = { x: $x };
return ENGINE.runKernel(Diag, inputs);
}
export const diag = op({ diag_ });
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