@tensorflow/tfjs-core
Version:
Hardware-accelerated JavaScript library for machine intelligence
50 lines • 5.05 kB
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 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.tensor2d([1, 2, 3, 4, 5, 6, 7, 8], [4, 2])
*
* tf.diag(x).print()
* ```
* @param x The input tensor.
*
* @doc {heading: 'Tensors', subheading: 'Creation'}
*/
function diag_(x) {
const $x = convertToTensor(x, 'x', 'diag');
const inputs = { x: $x };
return ENGINE.runKernel(Diag, inputs);
}
export const diag = /* @__PURE__ */ op({ diag_ });
//# sourceMappingURL=data:application/json;base64,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