time-to-botec

Benchmark sampling in different programming languages
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get.js (2078B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 /* eslint-disable no-invalid-this */
     20 
     21 'use strict';
     22 
     23 // MODULES //
     24 
     25 var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
     26 var getIndex = require( './../../base/ind' );
     27 
     28 
     29 // MAIN //
     30 
     31 /**
     32 * Returns an array element.
     33 *
     34 * ## Notes
     35 *
     36 * -   The number of indices should **equal** the number of dimensions. Accordingly, for zero-dimensional arrays, no indices should be provided.
     37 *
     38 * @private
     39 * @param {...integer} [idx] - indices
     40 * @throws {TypeError} provided indices must be integer valued
     41 * @throws {RangeError} index exceeds array dimensions
     42 * @throws {RangeError} number of indices must equal the number of dimensions
     43 * @returns {*} array element
     44 */
     45 function get() {
     46 	var idx;
     47 	var ind;
     48 	var M;
     49 	var i;
     50 
     51 	if ( arguments.length !== this._ndims ) {
     52 		throw new RangeError( 'invalid arguments. Number of indices must match the number of dimensions. ndims: '+this._ndims+'. nargs: '+arguments.length+'.' );
     53 	}
     54 	idx = this._offset;
     55 	M = this._submode.length;
     56 	for ( i = 0; i < arguments.length; i++ ) {
     57 		if ( !isInteger( arguments[ i ] ) ) {
     58 			throw new TypeError( 'invalid argument. Indices must be integer valued. Argument: '+i+'. Value: `'+arguments[ i ]+'`.' );
     59 		}
     60 		ind = getIndex( arguments[ i ], this._shape[ i ]-1, this._submode[ i%M ] ); // eslint-disable-line max-len
     61 		idx += this._strides[ i ] * ind;
     62 	}
     63 	if ( this._accessors ) {
     64 		return this._buffer.get( idx );
     65 	}
     66 	return this._buffer[ idx ];
     67 }
     68 
     69 
     70 // EXPORTS //
     71 
     72 module.exports = get;