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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';
// MODULES //
var sqrt = require( '@stdlib/math/base/special/sqrt' );
var log10 = require( '@stdlib/math/base/special/log10' );
// MAIN //
/**
* Adjust the underflow and overflow thresholds if the exponent range is very large.
*
* @private
* @param {Float64Array} SMALL - array containing an element equal to the underflow threshold
* @param {NonNegativeInteger} offsetSMALL - index of the element in `SMALL`
* @param {Float64Array} LARGE - array containing an element equal to the overflow threshold
* @param {NonNegativeInteger} offsetLARGE - index of the element in `LARGE`
* @returns {void}
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
*
* var SMALL = new Float64Array( [ 2.2250738585072014e-308 ] );
* var LARGE = new Float64Array( [ 1.7976931348623157e+308 ] );
*
* dlabad( SMALL, 0, LARGE, 0 );
* // SMALL => <Float64Array>[ 2.2250738585072014e-308 ]
* // LARGE => <Float64Array>[ 1.7976931348623157e+308 ]
*/
function dlabad( SMALL, offsetSMALL, LARGE, offsetLARGE ) {
if ( log10( LARGE[ offsetLARGE ] ) > 2000.0 ) {
SMALL[ offsetSMALL ] = sqrt( SMALL[ offsetSMALL ] );
LARGE[ offsetLARGE ] = sqrt( LARGE[ offsetLARGE ] );
}
}
// EXPORTS //
module.exports = dlabad;
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