/**
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* @license
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* Copyright 2018 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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import * as broadcast_util from '../../ops/broadcast_util';
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import {GPGPUProgram} from './gpgpu_math';
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// (Ar + Ai)(Br + Bi) =
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// ArBr + ArBi + AiBr + AiBi = ArBr - AB + ArBi + AiBr
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// Yr = ArBr - AB
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// Yi = ArBi + AiBr
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export const COMPLEX_MULTIPLY = {
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REAL: 'return areal * breal - aimag * bimag;',
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IMAG: 'return areal * bimag + aimag * breal;'
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};
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export class BinaryOpComplexProgram implements GPGPUProgram {
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variableNames = ['AReal', 'AImag', 'BReal', 'BImag'];
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userCode: string;
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outputShape: number[];
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constructor(op: string, aShape: number[], bShape: number[]) {
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this.outputShape =
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broadcast_util.assertAndGetBroadcastShape(aShape, bShape);
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this.userCode = `
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float binaryOpComplex(
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float areal, float aimag, float breal, float bimag) {
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${op}
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}
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void main() {
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float areal = getARealAtOutCoords();
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float aimag = getAImagAtOutCoords();
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float breal = getBRealAtOutCoords();
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float bimag = getBImagAtOutCoords();
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setOutput(binaryOpComplex(areal, aimag, breal, bimag));
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}
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`;
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}
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}
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