time-to-botec

Benchmark sampling in different programming languages
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is_set.js (1062B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2021 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 'use strict';
     20 
     21 // MAIN //
     22 
     23 /**
     24 * Checks whether a bit is set.
     25 *
     26 * @private
     27 * @param {integer32} value - integer value
     28 * @param {NonNegativeInteger} i - bit to check
     29 * @returns {boolean} boolean indicating whether a bit is set
     30 *
     31 * @example
     32 * var bool = isSet( 4, 2 );
     33 * // returns true
     34 *
     35 * bool = isSet( 4, 0 );
     36 * // returns false
     37 */
     38 function isSet( value, i ) {
     39 	return Boolean( ( value >> i ) & 1 );
     40 }
     41 
     42 
     43 // EXPORTS //
     44 
     45 module.exports = isSet;