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@tensorflow/tfjs-core

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Hardware-accelerated JavaScript library for machine intelligence

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/** * @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 * as tf from '../index'; import { ALL_ENVS, describeWithFlags } from '../jasmine_util'; import { expectArraysEqual } from '../test_util'; describeWithFlags('range', ALL_ENVS, () => { it('start stop', async () => { const a = tf.range(0, 3); expectArraysEqual(await a.data(), [0, 1, 2]); expect(a.shape).toEqual([3]); const b = tf.range(3, 8); expectArraysEqual(await b.data(), [3, 4, 5, 6, 7]); expect(b.shape).toEqual([5]); }); it('start stop negative', async () => { const a = tf.range(-2, 3); expectArraysEqual(await a.data(), [-2, -1, 0, 1, 2]); expect(a.shape).toEqual([5]); const b = tf.range(4, -2); expectArraysEqual(await b.data(), [4, 3, 2, 1, 0, -1]); expect(b.shape).toEqual([6]); }); it('start stop step', async () => { const a = tf.range(4, 15, 4); expectArraysEqual(await a.data(), [4, 8, 12]); expect(a.shape).toEqual([3]); const b = tf.range(4, 11, 4); expectArraysEqual(await b.data(), [4, 8]); expect(b.shape).toEqual([2]); const c = tf.range(4, 17, 4); expectArraysEqual(await c.data(), [4, 8, 12, 16]); expect(c.shape).toEqual([4]); const d = tf.range(0, 30, 5); expectArraysEqual(await d.data(), [0, 5, 10, 15, 20, 25]); expect(d.shape).toEqual([6]); const e = tf.range(-3, 9, 2); expectArraysEqual(await e.data(), [-3, -1, 1, 3, 5, 7]); expect(e.shape).toEqual([6]); const f = tf.range(3, 3); expectArraysEqual(await f.data(), new Float32Array(0)); expect(f.shape).toEqual([0]); const g = tf.range(3, 3, 1); expectArraysEqual(await g.data(), new Float32Array(0)); expect(g.shape).toEqual([0]); const h = tf.range(3, 3, 4); expectArraysEqual(await h.data(), new Float32Array(0)); expect(h.shape).toEqual([0]); const i = tf.range(-18, -2, 5); expectArraysEqual(await i.data(), [-18, -13, -8, -3]); expect(i.shape).toEqual([4]); }); it('start stop large step', async () => { const a = tf.range(3, 10, 150); expectArraysEqual(await a.data(), [3]); expect(a.shape).toEqual([1]); const b = tf.range(10, 500, 205); expectArraysEqual(await b.data(), [10, 215, 420]); expect(b.shape).toEqual([3]); const c = tf.range(3, -10, -150); expectArraysEqual(await c.data(), [3]); expect(c.shape).toEqual([1]); const d = tf.range(-10, -500, -205); expectArraysEqual(await d.data(), [-10, -215, -420]); expect(d.shape).toEqual([3]); }); it('start stop negative step', async () => { const a = tf.range(0, -10, -1); expectArraysEqual(await a.data(), [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]); expect(a.shape).toEqual([10]); const b = tf.range(0, -10); expectArraysEqual(await b.data(), [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]); expect(b.shape).toEqual([10]); const c = tf.range(3, -4, -2); expectArraysEqual(await c.data(), [3, 1, -1, -3]); expect(c.shape).toEqual([4]); const d = tf.range(-3, -18, -5); expectArraysEqual(await d.data(), [-3, -8, -13]); expect(d.shape).toEqual([3]); }); it('start stop incompatible step', async () => { const a = tf.range(3, 10, -2); expectArraysEqual(await a.data(), new Float32Array(0)); expect(a.shape).toEqual([0]); const b = tf.range(40, 3, 2); expectArraysEqual(await b.data(), new Float32Array(0)); expect(b.shape).toEqual([0]); }); it('zero step', () => { expect(() => tf.range(2, 10, 0)).toThrow(); }); it('should have default dtype', async () => { const a = tf.range(1, 4); expectArraysEqual(await a.data(), [1, 2, 3]); expect(a.dtype).toEqual('float32'); expect(a.shape).toEqual([3]); }); it('should have float32 dtype', async () => { const a = tf.range(1, 4, undefined, 'float32'); expectArraysEqual(await a.data(), [1, 2, 3]); expect(a.dtype).toEqual('float32'); expect(a.shape).toEqual([3]); }); it('should have int32 dtype', async () => { const a = tf.range(1, 4, undefined, 'int32'); expectArraysEqual(await a.data(), [1, 2, 3]); expect(a.dtype).toEqual('int32'); expect(a.shape).toEqual([3]); }); it('should support large number for int32 dtype', async () => { const length = Math.pow(2, 24) + 10; const a = tf.range(1, length, 1, 'int32'); const data = await a.data(); expect(data[length - 2]).toEqual(length - 1); expect(a.dtype).toEqual('int32'); expect(a.shape).toEqual([length - 1]); }); }); //# 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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 {expectArraysEqual} from '../test_util';\n\ndescribeWithFlags('range', ALL_ENVS, () => {\n  it('start stop', async () => {\n    const a = tf.range(0, 3);\n    expectArraysEqual(await a.data(), [0, 1, 2]);\n    expect(a.shape).toEqual([3]);\n\n    const b = tf.range(3, 8);\n    expectArraysEqual(await b.data(), [3, 4, 5, 6, 7]);\n    expect(b.shape).toEqual([5]);\n  });\n\n  it('start stop negative', async () => {\n    const a = tf.range(-2, 3);\n    expectArraysEqual(await a.data(), [-2, -1, 0, 1, 2]);\n    expect(a.shape).toEqual([5]);\n\n    const b = tf.range(4, -2);\n    expectArraysEqual(await b.data(), [4, 3, 2, 1, 0, -1]);\n    expect(b.shape).toEqual([6]);\n  });\n\n  it('start stop step', async () => {\n    const a = tf.range(4, 15, 4);\n    expectArraysEqual(await a.data(), [4, 8, 12]);\n    expect(a.shape).toEqual([3]);\n\n    const b = tf.range(4, 11, 4);\n    expectArraysEqual(await b.data(), [4, 8]);\n    expect(b.shape).toEqual([2]);\n\n    const c = tf.range(4, 17, 4);\n    expectArraysEqual(await c.data(), [4, 8, 12, 16]);\n    expect(c.shape).toEqual([4]);\n\n    const d = tf.range(0, 30, 5);\n    expectArraysEqual(await d.data(), [0, 5, 10, 15, 20, 25]);\n    expect(d.shape).toEqual([6]);\n\n    const e = tf.range(-3, 9, 2);\n    expectArraysEqual(await e.data(), [-3, -1, 1, 3, 5, 7]);\n    expect(e.shape).toEqual([6]);\n\n    const f = tf.range(3, 3);\n    expectArraysEqual(await f.data(), new Float32Array(0));\n    expect(f.shape).toEqual([0]);\n\n    const g = tf.range(3, 3, 1);\n    expectArraysEqual(await g.data(), new Float32Array(0));\n    expect(g.shape).toEqual([0]);\n\n    const h = tf.range(3, 3, 4);\n    expectArraysEqual(await h.data(), new Float32Array(0));\n    expect(h.shape).toEqual([0]);\n\n    const i = tf.range(-18, -2, 5);\n    expectArraysEqual(await i.data(), [-18, -13, -8, -3]);\n    expect(i.shape).toEqual([4]);\n  });\n\n  it('start stop large step', async () => {\n    const a = tf.range(3, 10, 150);\n    expectArraysEqual(await a.data(), [3]);\n    expect(a.shape).toEqual([1]);\n\n    const b = tf.range(10, 500, 205);\n    expectArraysEqual(await b.data(), [10, 215, 420]);\n    expect(b.shape).toEqual([3]);\n\n    const c = tf.range(3, -10, -150);\n    expectArraysEqual(await c.data(), [3]);\n    expect(c.shape).toEqual([1]);\n\n    const d = tf.range(-10, -500, -205);\n    expectArraysEqual(await d.data(), [-10, -215, -420]);\n    expect(d.shape).toEqual([3]);\n  });\n\n  it('start stop negative step', async () => {\n    const a = tf.range(0, -10, -1);\n    expectArraysEqual(await a.data(), [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]);\n    expect(a.shape).toEqual([10]);\n\n    const b = tf.range(0, -10);\n    expectArraysEqual(await b.data(), [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]);\n    expect(b.shape).toEqual([10]);\n\n    const c = tf.range(3, -4, -2);\n    expectArraysEqual(await c.data(), [3, 1, -1, -3]);\n    expect(c.shape).toEqual([4]);\n\n    const d = tf.range(-3, -18, -5);\n    expectArraysEqual(await d.data(), [-3, -8, -13]);\n    expect(d.shape).toEqual([3]);\n  });\n\n  it('start stop incompatible step', async () => {\n    const a = tf.range(3, 10, -2);\n    expectArraysEqual(await a.data(), new Float32Array(0));\n    expect(a.shape).toEqual([0]);\n\n    const b = tf.range(40, 3, 2);\n    expectArraysEqual(await b.data(), new Float32Array(0));\n    expect(b.shape).toEqual([0]);\n  });\n\n  it('zero step', () => {\n    expect(() => tf.range(2, 10, 0)).toThrow();\n  });\n\n  it('should have default dtype', async () => {\n    const a = tf.range(1, 4);\n    expectArraysEqual(await a.data(), [1, 2, 3]);\n    expect(a.dtype).toEqual('float32');\n    expect(a.shape).toEqual([3]);\n  });\n\n  it('should have float32 dtype', async () => {\n    const a = tf.range(1, 4, undefined, 'float32');\n    expectArraysEqual(await a.data(), [1, 2, 3]);\n    expect(a.dtype).toEqual('float32');\n    expect(a.shape).toEqual([3]);\n  });\n\n  it('should have int32 dtype', async () => {\n    const a = tf.range(1, 4, undefined, 'int32');\n    expectArraysEqual(await a.data(), [1, 2, 3]);\n    expect(a.dtype).toEqual('int32');\n    expect(a.shape).toEqual([3]);\n  });\n\n  it('should support large number for int32 dtype', async () => {\n    const length = Math.pow(2, 24) + 10;\n    const a = tf.range(1, length, 1, 'int32');\n    const data = await a.data();\n    expect(data[length - 2]).toEqual(length - 1);\n    expect(a.dtype).toEqual('int32');\n    expect(a.shape).toEqual([length - 1]);\n  });\n});\n"]}