/** * @license * Copyright 2020 Google Inc. 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 * as tf from '../index'; import { ALL_ENVS, describeWithFlags } from '../jasmine_util'; import { expectArraysClose } from '../test_util'; describeWithFlags('expm1', ALL_ENVS, () => { it('expm1', async () => { const a = tf.tensor1d([1, 2, 0]); const r = tf.expm1(a); expectArraysClose(await r.data(), [Math.expm1(1), Math.expm1(2), Math.expm1(0)]); }); it('expm1 propagates NaNs', async () => { const a = tf.tensor1d([1, NaN, 0]); const r = tf.expm1(a); expectArraysClose(await r.data(), [Math.expm1(1), NaN, Math.expm1(0)]); }); it('gradients: Scalar', async () => { const a = tf.scalar(0.5); const dy = tf.scalar(3); const gradients = tf.grad(a => tf.expm1(a))(a, dy); expect(gradients.shape).toEqual(a.shape); expect(gradients.dtype).toEqual('float32'); expectArraysClose(await gradients.data(), [3 * Math.exp(0.5)]); }); it('gradient with clones', async () => { const a = tf.scalar(0.5); const dy = tf.scalar(3); const gradients = tf.grad(a => tf.expm1(a.clone()).clone())(a, dy); expect(gradients.shape).toEqual(a.shape); expect(gradients.dtype).toEqual('float32'); expectArraysClose(await gradients.data(), [3 * Math.exp(0.5)]); }); it('gradients: Tensor1D', async () => { const a = tf.tensor1d([-1, 2, 3, -5]); const dy = tf.tensor1d([1, 2, 3, 4]); const gradients = tf.grad(a => tf.expm1(a))(a, dy); expect(gradients.shape).toEqual(a.shape); expect(gradients.dtype).toEqual('float32'); expectArraysClose(await gradients.data(), [1 * Math.exp(-1), 2 * Math.exp(2), 3 * Math.exp(3), 4 * Math.exp(-5)], 1e-1); }); it('gradients: Tensor2D', async () => { const a = tf.tensor2d([-3, 1, 2, 3], [2, 2]); const dy = tf.tensor2d([1, 2, 3, 4], [2, 2]); const gradients = tf.grad(a => tf.expm1(a))(a, dy); expect(gradients.shape).toEqual(a.shape); expect(gradients.dtype).toEqual('float32'); expectArraysClose(await gradients.data(), [1 * Math.exp(-3), 2 * Math.exp(1), 3 * Math.exp(2), 4 * Math.exp(3)], 1e-1); }); it('throws when passed a non-tensor', () => { expect(() => tf.expm1({})) .toThrowError(/Argument 'x' passed to 'expm1' must be a Tensor/); }); it('accepts a tensor-like object', async () => { const r = tf.expm1([1, 2, 0]); expectArraysClose(await r.data(), [Math.expm1(1), Math.expm1(2), Math.expm1(0)]); }); it('throws for string tensor', () => { expect(() => tf.expm1('q')) .toThrowError(/Argument 'x' passed to 'expm1' must be numeric/); }); }); //# 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* @license\n * Copyright 2020 Google Inc. 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('expm1', ALL_ENVS, () => {\n  it('expm1', async () => {\n    const a = tf.tensor1d([1, 2, 0]);\n    const r = tf.expm1(a);\n\n    expectArraysClose(\n        await r.data(), [Math.expm1(1), Math.expm1(2), Math.expm1(0)]);\n  });\n\n  it('expm1 propagates NaNs', async () => {\n    const a = tf.tensor1d([1, NaN, 0]);\n    const r = tf.expm1(a);\n    expectArraysClose(await r.data(), [Math.expm1(1), NaN, Math.expm1(0)]);\n  });\n\n  it('gradients: Scalar', async () => {\n    const a = tf.scalar(0.5);\n    const dy = tf.scalar(3);\n\n    const gradients = tf.grad(a => tf.expm1(a))(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), [3 * Math.exp(0.5)]);\n  });\n\n  it('gradient with clones', async () => {\n    const a = tf.scalar(0.5);\n    const dy = tf.scalar(3);\n\n    const gradients = tf.grad(a => tf.expm1(a.clone()).clone())(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(await gradients.data(), [3 * Math.exp(0.5)]);\n  });\n\n  it('gradients: Tensor1D', async () => {\n    const a = tf.tensor1d([-1, 2, 3, -5]);\n    const dy = tf.tensor1d([1, 2, 3, 4]);\n\n    const gradients = tf.grad(a => tf.expm1(a))(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(\n        await gradients.data(),\n        [1 * Math.exp(-1), 2 * Math.exp(2), 3 * Math.exp(3), 4 * Math.exp(-5)],\n        1e-1);\n  });\n\n  it('gradients: Tensor2D', async () => {\n    const a = tf.tensor2d([-3, 1, 2, 3], [2, 2]);\n    const dy = tf.tensor2d([1, 2, 3, 4], [2, 2]);\n\n    const gradients = tf.grad(a => tf.expm1(a))(a, dy);\n\n    expect(gradients.shape).toEqual(a.shape);\n    expect(gradients.dtype).toEqual('float32');\n    expectArraysClose(\n        await gradients.data(),\n        [1 * Math.exp(-3), 2 * Math.exp(1), 3 * Math.exp(2), 4 * Math.exp(3)],\n        1e-1);\n  });\n\n  it('throws when passed a non-tensor', () => {\n    expect(() => tf.expm1({} as tf.Tensor))\n        .toThrowError(/Argument 'x' passed to 'expm1' must be a Tensor/);\n  });\n\n  it('accepts a tensor-like object', async () => {\n    const r = tf.expm1([1, 2, 0]);\n\n    expectArraysClose(\n        await r.data(), [Math.expm1(1), Math.expm1(2), Math.expm1(0)]);\n  });\n\n  it('throws for string tensor', () => {\n    expect(() => tf.expm1('q'))\n        .toThrowError(/Argument 'x' passed to 'expm1' must be numeric/);\n  });\n});\n"]}