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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 numelDimension = require( '@stdlib/ndarray/base/numel-dimension' );
var getStride = require( '@stdlib/ndarray/base/stride' );
var getData = require( '@stdlib/ndarray/base/data-buffer' );
var getOffset = require( '@stdlib/ndarray/base/offset' );
var strided = require( '@stdlib/stats/strided/nanmin-by' ).ndarray;
// MAIN //
/**
* Computes the minimum value of a one-dimensional ndarray via a callback function, ignoring NaN values.
*
* ## Notes
*
* - The function expects the following ndarrays:
*
* - a one-dimensional input ndarray.
*
* @param {ArrayLikeObject<Object>} arrays - array-like object containing ndarrays
* @param {Function} clbk - callback function
* @param {*} [thisArg] - callback execution context
* @returns {number} minimum value
*
* @example
* var vector = require( '@stdlib/ndarray/vector/ctor' );
* var nanminBy = require( '@stdlib/stats/base/ndarray/nanmin-by' );
*
* var x = vector( [ 1.0, -2.0, NaN, 2.0 ], 'generic' );
*
* function clbk( value ) {
* return value * 2.0;
* }
*
* var v = nanminBy( [ x ], clbk );
* // returns -4.0
*/
function nanminBy( arrays, clbk, thisArg ) {
var x = arrays[ 0 ];
return strided( numelDimension( x, 0 ), getData( x ), getStride( x, 0 ), getOffset( x ), wrapper, null ); // eslint-disable-line max-len
/**
* Invokes the provided callback.
*
* @private
* @param {*} value - current array element
* @param {NonNegativeInteger} aidx - current array element index
* @param {NonNegativeInteger} sidx - current strided array element index
* @param {Collection} arr - input array
* @returns {*} result
*/
function wrapper( value, aidx ) {
return clbk.call( thisArg, value, aidx, x );
}
}
// EXPORTS //
module.exports = nanminBy;
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