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234+ < span class ="cline-any cline-neutral "> </ span > </ td > < td class ="text "> < pre class ="prettyprint lang-js "> /**
235+ * @license Apache-2.0
236+ *
237+ * Copyright (c) 2025 The Stdlib Authors.
238+ *
239+ * Licensed under the Apache License, Version 2.0 (the "License");
240+ * you may not use this file except in compliance with the License.
241+ * You may obtain a copy of the License at
242+ *
243+ * http://www.apache.org/licenses/LICENSE-2.0
244+ *
245+ * Unless required by applicable law or agreed to in writing, software
246+ * distributed under the License is distributed on an "AS IS" BASIS,
247+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
248+ * See the License for the specific language governing permissions and
249+ * limitations under the License.
250+ */
251+
252+ 'use strict';
253+
254+ // MAIN //
255+
256+ /**
257+ * Flattens a shape starting from a specified dimension and assigns results to a provided output array.
258+ *
259+ * @param {NonNegativeIntegerArray} shape - array shape
260+ * @param {integer} dim - dimension to start flattening from
261+ * @param {Collection} out - output object
262+ * @returns {Collection} array shape
263+ *
264+ * @example
265+ * var sh = [ 0, 0 ];
266+ *
267+ * var out = flattenShapeFrom( [ 3, 3, 2 ], 1, sh );
268+ * // returns [ 3, 6 ]
269+ *
270+ * var bool = ( out === sh );
271+ * // returns true
272+ *
273+ * @example
274+ * var sh = [ 0, 0 ];
275+ *
276+ * var out = flattenShapeFrom( [ 3, 3, 2 ], -2, sh );
277+ * // returns [ 3, 6 ]
278+ *
279+ * var bool = ( out === sh );
280+ * // returns true
281+ */
282+ function flattenShapeFrom( shape, dim, out ) {
283+ var ndims;
284+ var s;
285+ var i;
286+ var j;
287+
288+ ndims = shape.length;
289+
290+ // Normalize the dimension index...
291+ if ( dim < 0 ) {
292+ dim += ndims;
293+ if ( dim < 0 ) {
294+ dim = 0;
295+ }
296+ }
297+ s = 1;
298+ j = 0;
299+ for ( i = 0; i < ndims; i++ ) { // e.g., shape=[2,3,4,5], dim=2 => shape=[2,3,20]
300+ if ( i >= dim ) {
301+ s *= shape[ i ];
302+ if ( i === ndims-1 ) {
303+ out[ j ] = s;
304+ j += 1;
305+ }
306+ } else {
307+ out[ j ] = shape[ i ];
308+ j += 1;
309+ }
310+ }
311+ return out;
312+ }
313+
314+
315+ // EXPORTS //
316+
317+ module.exports = flattenShapeFrom;
318+ </ pre > </ td > </ tr > </ table > </ pre >
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