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('acosh', ALL_ENVS, () => {
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21 | it('basic', async () => {
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22 | const values = [2, 3, 4, 5, 6];
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23 | const a = tf.tensor1d(values);
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24 | const result = tf.acosh(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.acosh(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('scalar', async () => {
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32 | const value = 2;
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33 | const a = tf.scalar(value);
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34 | const result = tf.acosh(a);
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35 | const expected = [Math.acosh(value)];
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36 | expectArraysClose(await result.data(), expected);
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37 | });
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38 | it('tensor2d', async () => {
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39 | const values = [2, 3, 4, 5];
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40 | const a = tf.tensor2d(values, [2, 2]);
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41 | const result = tf.acosh(a);
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42 | const expected = [];
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43 | for (let i = 0; i < a.size; i++) {
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44 | expected[i] = Math.acosh(values[i]);
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45 | }
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46 | expectArraysClose(await result.data(), expected);
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47 | });
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48 | it('propagates NaNs', async () => {
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49 | const a = tf.tensor1d([4, NaN, 2]);
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50 | const res = tf.acosh(a);
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51 | expectArraysClose(await res.data(), [Math.acosh(4), NaN, Math.acosh(2)]);
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52 | });
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53 | it('NaN outside function domain', async () => {
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54 | const a = tf.tensor1d([4, -1, 2]);
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55 | const res = tf.acosh(a);
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56 | expectArraysClose(await res.data(), [Math.acosh(4), NaN, Math.acosh(2)]);
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57 | });
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58 | it('gradients: Scalar', async () => {
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59 | const a = tf.scalar(1.5);
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60 | const dy = tf.scalar(8);
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61 | const gradients = tf.grad(a => tf.acosh(a))(a, dy);
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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(), [8.0 / Math.sqrt(1.5 * 1.5 - 1.0)]);
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65 | });
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66 | it('gradient with clones', async () => {
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67 | const a = tf.scalar(1.5);
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68 | const dy = tf.scalar(8);
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69 | const gradients = tf.grad(a => tf.acosh(a.clone()).clone())(a, dy);
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70 | expect(gradients.shape).toEqual(a.shape);
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71 | expect(gradients.dtype).toEqual('float32');
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72 | expectArraysClose(await gradients.data(), [8.0 / Math.sqrt(1.5 * 1.5 - 1.0)]);
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73 | });
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74 | it('gradients: Tensor1D', async () => {
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75 | const aValues = [2, 3, 5, 10];
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76 | const dyValues = [1, 2, 3, 4];
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77 | const a = tf.tensor1d(aValues);
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78 | const dy = tf.tensor1d(dyValues);
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79 | const gradients = tf.grad(a => tf.acosh(a))(a, dy);
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80 | const expected = [];
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81 | for (let i = 0; i < a.size; i++) {
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82 | expected[i] = dyValues[i] / Math.sqrt(Math.pow(aValues[i], 2) - 1.0);
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83 | }
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84 | expect(gradients.shape).toEqual(a.shape);
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85 | expect(gradients.dtype).toEqual('float32');
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86 | expectArraysClose(await gradients.data(), expected);
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87 | });
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88 | it('gradients: Tensor2D', async () => {
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89 | const aValues = [2, 3, 5, 7];
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90 | const dyValues = [1, 2, 3, 4];
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91 | const a = tf.tensor2d(aValues, [2, 2]);
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92 | const dy = tf.tensor2d(dyValues, [2, 2]);
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93 | const gradients = tf.grad(a => tf.acosh(a))(a, dy);
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94 | const expected = [];
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95 | for (let i = 0; i < a.size; i++) {
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96 | expected[i] = dyValues[i] / Math.sqrt(Math.pow(aValues[i], 2) - 1.0);
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97 | }
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98 | expect(gradients.shape).toEqual(a.shape);
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99 | expect(gradients.dtype).toEqual('float32');
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100 | expectArraysClose(await gradients.data(), expected);
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101 | });
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102 | it('throws when passed a non-tensor', () => {
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103 | expect(() => tf.acosh({}))
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104 | .toThrowError(/Argument 'x' passed to 'acosh' must be a Tensor/);
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105 | });
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106 | it('accepts a tensor-like object', async () => {
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107 | const values = [2, 3, 4, 5, 6];
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108 | const result = tf.acosh(values);
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109 | const expected = [];
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110 | for (let i = 0; i < values.length; i++) {
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111 | expected[i] = Math.acosh(values[i]);
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112 | }
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113 | expectArraysClose(await result.data(), expected);
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114 | });
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115 | it('throws for string tensor', () => {
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116 | expect(() => tf.acosh('q'))
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117 | .toThrowError(/Argument 'x' passed to 'acosh' must be numeric/);
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118 | });
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119 | });
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120 | //# 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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('acosh', ALL_ENVS, () => {\n  it('basic', async () => {\n    const values = [2, 3, 4, 5, 6];\n    const a = tf.tensor1d(values);\n    const result = tf.acosh(a);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = Math.acosh(values[i]);\n    }\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('scalar', async () => {\n    const value = 2;\n    const a = tf.scalar(value);\n    const result = tf.acosh(a);\n\n    const expected = [Math.acosh(value)];\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('tensor2d', async () => {\n    const values = [2, 3, 4, 5];\n    const a = tf.tensor2d(values, [2, 2]);\n    const result = tf.acosh(a);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = Math.acosh(values[i]);\n    }\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('propagates NaNs', async () => {\n    const a = tf.tensor1d([4, NaN, 2]);\n    const res = tf.acosh(a);\n    expectArraysClose(await res.data(), [Math.acosh(4), NaN, Math.acosh(2)]);\n  });\n\n  it('NaN outside function domain', async () => {\n    const a = tf.tensor1d([4, -1, 2]);\n    const res = tf.acosh(a);\n    expectArraysClose(await res.data(), [Math.acosh(4), NaN, Math.acosh(2)]);\n  });\n\n  it('gradients: Scalar', async () => {\n    const a = tf.scalar(1.5);\n    const dy = tf.scalar(8);\n\n    const gradients = tf.grad(a => tf.acosh(a))(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(\n        await gradients.data(), [8.0 / Math.sqrt(1.5 * 1.5 - 1.0)]);\n  });\n\n  it('gradient with clones', async () => {\n    const a = tf.scalar(1.5);\n    const dy = tf.scalar(8);\n\n    const gradients = tf.grad(a => tf.acosh(a.clone()).clone())(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(\n        await gradients.data(), [8.0 / Math.sqrt(1.5 * 1.5 - 1.0)]);\n  });\n\n  it('gradients: Tensor1D', async () => {\n    const aValues = [2, 3, 5, 10];\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.acosh(a))(a, dy);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = dyValues[i] / Math.sqrt(Math.pow(aValues[i], 2) - 1.0);\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 = [2, 3, 5, 7];\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.acosh(a))(a, dy);\n\n    const expected = [];\n    for (let i = 0; i < a.size; i++) {\n      expected[i] = dyValues[i] / Math.sqrt(Math.pow(aValues[i], 2) - 1.0);\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.acosh({} as tf.Tensor))\n        .toThrowError(/Argument 'x' passed to 'acosh' must be a Tensor/);\n  });\n\n  it('accepts a tensor-like object', async () => {\n    const values = [2, 3, 4, 5, 6];\n    const result = tf.acosh(values);\n\n    const expected = [];\n    for (let i = 0; i < values.length; i++) {\n      expected[i] = Math.acosh(values[i]);\n    }\n    expectArraysClose(await result.data(), expected);\n  });\n\n  it('throws for string tensor', () => {\n    expect(() => tf.acosh('q'))\n        .toThrowError(/Argument 'x' passed to 'acosh' must be numeric/);\n  });\n});\n"]} |
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