text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2020 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 isnan = require( '@stdlib/math/base/assert/is-nan' );
  
  
  // MAIN //
  
  /**
  * Computes the sum of single-precision floating-point strided array elements, ignoring `NaN` values, using ordinary recursive summation with extended accumulation, and returning an extended precision result.
  *
  * @param {PositiveInteger} N - number of indexed elements
  * @param {Float32Array} x - input array
  * @param {integer} strideX - `x` stride length
  * @param {Float64Array} out - output array
  * @param {integer} strideOut - `out` stride length
  * @returns {Float64Array} output array
  *
  * @example
  * var Float32Array = require( '@stdlib/array/float32' );
  * var Float64Array = require( '@stdlib/array/float64' );
  *
  * var x = new Float32Array( [ 1.0, -2.0, NaN, 2.0 ] );
  * var out = new Float64Array( 2 );
  *
  * var v = dsnannsumors( x.length, x, 1, out, 1 );
  * // returns <Float64Array>[ 1.0, 3 ]
  */
  function dsnannsumors( N, x, strideX, out, strideOut ) {
  	var sum;
  	var ix;
  	var io;
  	var n;
  	var i;
  
  	if ( strideX < 0 ) {
  		ix = (1-N) * strideX;
  	} else {
  		ix = 0;
  	}
  	if ( strideOut < 0 ) {
  		io = -strideOut;
  	} else {
  		io = 0;
  	}
  	sum = 0.0;
  	if ( N <= 0 ) {
  		out[ io ] = sum;
  		out[ io+strideOut ] = 0;
  		return out;
  	}
  	if ( N === 1 || strideX === 0 ) {
  		if ( isnan( x[ ix ] ) ) {
  			out[ io ] = sum;
  			out[ io+strideOut ] = 0;
  			return out;
  		}
  		out[ io ] = x[ ix ];
  		out[ io+strideOut ] = 1;
  		return out;
  	}
  	n = 0;
  	for ( i = 0; i < N; i++ ) {
  		if ( isnan( x[ ix ] ) === false ) {
  			sum += x[ ix ];
  			n += 1;
  		}
  		ix += strideX;
  	}
  	out[ io ] = sum;
  	out[ io+strideOut ] = n;
  	return out;
  }
  
  
  // EXPORTS //
  
  module.exports = dsnannsumors;
  