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* @license Apache-2.0
*
* Copyright (c) 2026 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.
*/
'use strict';
// MAIN //
/**
* Returns a boolean indicating if the sign bit is on (true) or off (false).
*
* @param {integer32} x - signed 32-bit integer
* @returns {boolean} boolean indicating if sign bit is on or off
*
* @example
* var bool = signbit32( 4 );
* // returns false
*
* @example
* var bool = signbit32( -4 );
* // returns true
*
* @example
* var bool = signbit32( 0 );
* // returns false
*
* @example
* var bool = signbit32( -0 );
* // returns false
*/
function signbit32( x ) {
// Shift off all bits which are not the sign bit and check if the sign bit is on:
return ( x >>> 31 ) ? true : false; // eslint-disable-line no-unneeded-ternary
}
// EXPORTS //
module.exports = signbit32;
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