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 resolve = require( 'path' ).resolve;
  var bench = require( '@stdlib/bench' );
  var randu = require( '@stdlib/random-base-randu' );
  var isnanf = require( '@stdlib/math-base-assert-is-nanf' );
  var pow = require( '@stdlib/math-base-special-pow' );
  var Float32Array = require( '@stdlib/array-float32' );
  var tryRequire = require( '@stdlib/utils-try-require' );
  var pkg = require( './../package.json' ).name;
  
  
  // VARIABLES //
  
  var snanvariancepn = tryRequire( resolve( __dirname, './../lib/ndarray.native.js' ) );
  var opts = {
  	'skip': ( snanvariancepn instanceof Error )
  };
  
  
  // FUNCTIONS //
  
  /**
  * Creates a benchmark function.
  *
  * @private
  * @param {PositiveInteger} len - array length
  * @returns {Function} benchmark function
  */
  function createBenchmark( len ) {
  	var x;
  	var i;
  
  	x = new Float32Array( len );
  	for ( i = 0; i < x.length; i++ ) {
  		if ( randu() < 0.2 ) {
  			x[ i ] = NaN;
  		} else {
  			x[ i ] = ( randu()*20.0 ) - 10.0;
  		}
  	}
  	return benchmark;
  
  	function benchmark( b ) {
  		var v;
  		var i;
  
  		b.tic();
  		for ( i = 0; i < b.iterations; i++ ) {
  			v = snanvariancepn( x.length, 1, x, 1, 0 );
  			if ( isnanf( v ) ) {
  				b.fail( 'should not return NaN' );
  			}
  		}
  		b.toc();
  		if ( isnanf( v ) ) {
  			b.fail( 'should not return NaN' );
  		}
  		b.pass( 'benchmark finished' );
  		b.end();
  	}
  }
  
  
  // MAIN //
  
  /**
  * Main execution sequence.
  *
  * @private
  */
  function main() {
  	var len;
  	var min;
  	var max;
  	var f;
  	var i;
  
  	min = 1; // 10^min
  	max = 6; // 10^max
  
  	for ( i = min; i <= max; i++ ) {
  		len = pow( 10, i );
  		f = createBenchmark( len );
  		bench( pkg+'::native:ndarray:len='+len, opts, f );
  	}
  }
  
  main();
  