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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 incrminmaxabs = require("@stdlib/stats/incr/minmaxabs");
var isnan = require("@stdlib/math/base/assert/is-nan");
/**
* Returns an accumulator function which incrementally computes minimum and maximum absolute values, ignoring NaNs.
*
* @param {Collection} [out] - output array
* @returns {Function} accumulator function
*
* @example
* var accumulator = incrnanminmaxabs();
*
* var mm = accumulator();
* // returns null
*
* mm = accumulator( NaN );
* // returns null
*
* mm = accumulator( 2.0 );
* // returns [ 2.0, 2.0 ]
*
* mm = accumulator( NaN );
* // returns [ 2.0, 2.0 ]
*
* mm = accumulator( -5.0 );
* // returns [ 2.0, 5.0 ]
*/
function incrnanminmaxabs(out) {
if (arguments.length === 0) {
out = [0.0, 0.0]; // Default output array
}
var accumulator = incrminmaxabs(out); // Use the original function
return function (x) {
if (arguments.length === 0) {
return accumulator(); // Return current min/max if no input
}
if (isnan(x)) {
return accumulator(); // Ignore NaN
}
return accumulator(x); // Pass valid numbers
};
}
// EXPORTS //
module.exports = incrnanminmaxabs;
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