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* @license Apache-2.0
*
* Copyright (c) 2025 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';
// MODULES //
var floor = require( '@stdlib/math/base/special/floor' );
var isEven = require( '@stdlib/math/base/assert/is-even' );
// MAIN //
/**
* Rounds X to the nearest integer following Baker's rounding.
*
* @private
* @param {PositiveInteger} X - input number
* @returns {number} nearest integer
*
* @example
* var out = nint( 4.5 );
* // returns 4.0
*/
function nint( X ) {
var frac;
var flo;
flo = floor( X );
frac = X - flo;
if ( frac < 0.5 ) {
return flo;
}
if ( frac > 0.5 ) {
return flo + 1;
}
if ( isEven( flo ) ) {
return flo;
}
return flo + 1;
}
// EXPORTS //
module.exports = nint;
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