1 | /**
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2 | * @license
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3 | * Copyright 2020 Google LLC. All Rights Reserved.
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | * =============================================================================
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16 | */
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17 | import { ENGINE } from '../engine';
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18 | import { sizeFromShape } from '../util';
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19 | import { op } from './operation';
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20 | /**
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21 | * Creates a `tf.Tensor` with values sampled from a random number generator
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22 | * function defined by the user.
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23 | *
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24 | * @param shape An array of integers defining the output tensor shape.
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25 | * @param randFunction A random number generator function which is called
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26 | * for each element in the output tensor.
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27 | * @param dtype The data type of the output tensor. Defaults to 'float32'.
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28 | *
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29 | * @doc {heading: 'Tensors', subheading: 'Random'}
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30 | */
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31 | function rand_(shape, randFunction, dtype) {
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32 | const size = sizeFromShape(shape);
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33 | let values = null;
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34 | if (dtype == null || dtype === 'float32') {
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35 | values = new Float32Array(size);
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36 | }
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37 | else if (dtype === 'int32') {
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38 | values = new Int32Array(size);
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39 | }
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40 | else if (dtype === 'bool') {
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41 | values = new Uint8Array(size);
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42 | }
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43 | else {
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44 | throw new Error(`Unknown data type ${dtype}`);
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45 | }
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46 | for (let i = 0; i < size; i++) {
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47 | values[i] = randFunction();
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48 | }
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49 | return ENGINE.makeTensor(values, shape, dtype);
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50 | }
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51 | export const rand = op({ rand_ });
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52 | //# sourceMappingURL=rand.js.map |
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