62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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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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'use strict';
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// MAIN //
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/**
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* Recursively converts an ndarray to a generic array.
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*
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* @private
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* @param {(ArrayLikeObject|TypedArray|Buffer)} buffer - data buffer
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* @param {NonNegativeIntegerArray} shape - array shape
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* @param {IntegerArray} strides - array strides
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* @param {NonNegativeInteger} offset - index offset
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* @param {string} order - specifies whether an array is row-major (C-style) or column-major (Fortran-style)
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* @param {NonNegativeInteger} dim - dimension
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* @returns {(Array|Array<Array>)} output array
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*/
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function recurse( buffer, shape, strides, offset, order, dim ) {
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var stride;
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var item;
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var out;
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var n;
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var i;
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if ( dim >= shape.length ) {
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return buffer[ offset ];
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}
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out = [];
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n = shape[ dim ];
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stride = strides[ dim ];
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for ( i = 0; i < n; i++ ) {
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item = recurse( buffer, shape, strides, offset, order, dim+1 );
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out.push( item );
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offset += stride;
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}
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return out;
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}
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// EXPORTS //
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module.exports = recurse;
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