@stdlib/utils
Version:
Standard utilities.
51 lines (41 loc) • 1.13 kB
JavaScript
/**
* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* 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.
*/
;
// MODULES //
var Boolean = require( '@stdlib/boolean/ctor' );
// MAIN //
/**
* Checks whether a bit is set.
*
* @private
* @param {integer32} value - integer value
* @param {NonNegativeInteger} i - bit to check
* @returns {boolean} boolean indicating whether a bit is set
*
* @example
* var bool = isSet( 4, 2 );
* // returns true
*
* bool = isSet( 4, 0 );
* // returns false
*/
function isSet( value, i ) {
return Boolean( ( value >> i ) & 1 );
}
// EXPORTS //
module.exports = isSet;