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 * as tf from '../index';
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18 | import { ALL_ENVS, describeWithFlags } from '../jasmine_util';
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19 | import { expectArraysClose } from '../test_util';
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20 | describeWithFlags('asin', ALL_ENVS, () => {
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21 | it('basic', async () => {
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22 | const values = [.1, -3, 2, 7, -4];
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23 | const a = tf.tensor1d(values);
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24 | const result = tf.asin(a);
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25 | const expected = [];
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26 | for (let i = 0; i < a.size; i++) {
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27 | expected[i] = Math.asin(values[i]);
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28 | }
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29 | expectArraysClose(await result.data(), expected);
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30 | });
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31 | it('propagates NaNs', async () => {
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32 | const a = tf.tensor1d([4, NaN, 0]);
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33 | const res = tf.asin(a);
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34 | expectArraysClose(await res.data(), [Math.asin(4), NaN, Math.asin(0)]);
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35 | });
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36 | it('gradients: Scalar', async () => {
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37 | const a = tf.scalar(0.5);
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38 | const dy = tf.scalar(8);
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39 | const gradients = tf.grad(a => tf.asin(a))(a, dy);
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40 | expect(gradients.shape).toEqual(a.shape);
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41 | expect(gradients.dtype).toEqual('float32');
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42 | expectArraysClose(await gradients.data(), [8 / Math.sqrt(1 - (0.5 * 0.5))]);
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43 | });
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44 | it('gradient with clones', async () => {
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45 | const a = tf.scalar(0.5);
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46 | const dy = tf.scalar(8);
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47 | const gradients = tf.grad(a => tf.asin(a.clone()).clone())(a, dy);
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48 | expect(gradients.shape).toEqual(a.shape);
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49 | expect(gradients.dtype).toEqual('float32');
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50 | expectArraysClose(await gradients.data(), [8 / Math.sqrt(1 - (0.5 * 0.5))]);
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51 | });
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52 | it('gradients: Tensor1D', async () => {
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53 | const aValues = [-0.1, 0.2, 0.3, -0.5];
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54 | const dyValues = [1, 2, 3, 4];
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55 | const a = tf.tensor1d(aValues);
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56 | const dy = tf.tensor1d(dyValues);
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57 | const gradients = tf.grad(a => tf.asin(a))(a, dy);
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58 | const expected = [];
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59 | for (let i = 0; i < a.size; i++) {
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60 | expected[i] = dyValues[i] / Math.sqrt(1 - (aValues[i] * aValues[i]));
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61 | }
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62 | expect(gradients.shape).toEqual(a.shape);
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63 | expect(gradients.dtype).toEqual('float32');
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64 | expectArraysClose(await gradients.data(), expected);
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65 | });
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66 | it('gradients: Tensor2D', async () => {
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67 | const aValues = [-0.3, 0.1, 0.2, 0.3];
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68 | const dyValues = [1, 2, 3, 4];
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69 | const a = tf.tensor2d(aValues, [2, 2]);
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70 | const dy = tf.tensor2d(dyValues, [2, 2]);
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71 | const gradients = tf.grad(a => tf.asin(a))(a, dy);
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72 | const expected = [];
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73 | for (let i = 0; i < a.size; i++) {
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74 | expected[i] = dyValues[i] / Math.sqrt(1 - (aValues[i] * aValues[i]));
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75 | }
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76 | expect(gradients.shape).toEqual(a.shape);
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77 | expect(gradients.dtype).toEqual('float32');
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78 | expectArraysClose(await gradients.data(), expected);
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79 | });
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80 | it('throws when passed a non-tensor', () => {
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81 | expect(() => tf.asin({}))
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82 | .toThrowError(/Argument 'x' passed to 'asin' must be a Tensor/);
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83 | });
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84 | it('accepts a tensor-like object', async () => {
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85 | const values = [.1, -3, 2, 7, -4];
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86 | const result = tf.asin(values);
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87 | const expected = [];
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88 | for (let i = 0; i < values.length; i++) {
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89 | expected[i] = Math.asin(values[i]);
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90 | }
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91 | expectArraysClose(await result.data(), expected);
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92 | });
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93 | it('throws for string tensor', () => {
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94 | expect(() => tf.asin('q'))
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95 | .toThrowError(/Argument 'x' passed to 'asin' must be numeric/);
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96 | });
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97 | });
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98 | //# 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* @license\n * Copyright 2020 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport * as tf from '../index';\nimport {ALL_ENVS, describeWithFlags} from '../jasmine_util';\nimport {expectArraysClose} from '../test_util';\n\ndescribeWithFlags('asin', ALL_ENVS, () => {\n  it('basic', async () => {\n    const values = [.1, -3, 2, 7, -4];\n    const a = tf.tensor1d(values);\n    const result = tf.asin(a);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = Math.asin(values[i]);\n    }\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('propagates NaNs', async () => {\n    const a = tf.tensor1d([4, NaN, 0]);\n    const res = tf.asin(a);\n    expectArraysClose(await res.data(), [Math.asin(4), NaN, Math.asin(0)]);\n  });\n\n  it('gradients: Scalar', async () => {\n    const a = tf.scalar(0.5);\n    const dy = tf.scalar(8);\n\n    const gradients = tf.grad(a => tf.asin(a))(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), [8 / Math.sqrt(1 - (0.5 * 0.5))]);\n  });\n\n  it('gradient with clones', async () => {\n    const a = tf.scalar(0.5);\n    const dy = tf.scalar(8);\n\n    const gradients = tf.grad(a => tf.asin(a.clone()).clone())(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), [8 / Math.sqrt(1 - (0.5 * 0.5))]);\n  });\n\n  it('gradients: Tensor1D', async () => {\n    const aValues = [-0.1, 0.2, 0.3, -0.5];\n    const dyValues = [1, 2, 3, 4];\n    const a = tf.tensor1d(aValues);\n    const dy = tf.tensor1d(dyValues);\n\n    const gradients = tf.grad(a => tf.asin(a))(a, dy);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = dyValues[i] / Math.sqrt(1 - (aValues[i] * aValues[i]));\n    }\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), expected);\n  });\n\n  it('gradients: Tensor2D', async () => {\n    const aValues = [-0.3, 0.1, 0.2, 0.3];\n    const dyValues = [1, 2, 3, 4];\n    const a = tf.tensor2d(aValues, [2, 2]);\n    const dy = tf.tensor2d(dyValues, [2, 2]);\n\n    const gradients = tf.grad(a => tf.asin(a))(a, dy);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = dyValues[i] / Math.sqrt(1 - (aValues[i] * aValues[i]));\n    }\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), expected);\n  });\n\n  it('throws when passed a non-tensor', () => {\n    expect(() => tf.asin({} as tf.Tensor))\n        .toThrowError(/Argument 'x' passed to 'asin' must be a Tensor/);\n  });\n\n  it('accepts a tensor-like object', async () => {\n    const values = [.1, -3, 2, 7, -4];\n    const result = tf.asin(values);\n\n    const expected = [];\n    for (let i = 0; i < values.length; i++) {\n      expected[i] = Math.asin(values[i]);\n    }\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('throws for string tensor', () => {\n    expect(() => tf.asin('q'))\n        .toThrowError(/Argument 'x' passed to 'asin' must be numeric/);\n  });\n});\n"]} |
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