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concat_util.ts
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concat_util.ts
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/**
* @license
* Copyright 2017 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 util from '../util';
export function assertParams(aShape: number[], bShape: number[], axis: number) {
const rank = aShape.length;
const bRank = bShape.length;
util.assert(
aShape.length === bShape.length,
`Error in concat${rank}D: rank of x1 (${rank}) and x2 (${bRank}) ` +
`must be the same.`);
util.assert(
axis >= 0 && axis < rank,
`Error in concat${rank}D: axis must be ` +
`between 0 and ${rank - 1}.`);
for (let i = 0; i < rank; i++) {
util.assert(
(i === axis) || (aShape[i] === bShape[i]),
`Error in concat${rank}D: Shape (${aShape}) does not match ` +
`(${bShape}) along the non-concatenated axis ${i}.`);
}
}
export function computeOutShape(
x1Shape: number[], x2Shape: number[], axis: number): number[] {
util.assert(
x1Shape.length === x2Shape.length,
'x1 and x2 should have the same rank.');
const outputShape = x1Shape.slice();
outputShape[axis] += x2Shape[axis];
return outputShape;
}