text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2021 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 tape = require( 'tape' );
  var tryRequire = require( '@stdlib/utils/try-require' );
  var Float64Array = require( '@stdlib/array/float64' );
  
  
  // VARIABLES //
  
  var addon = tryRequire( resolve( __dirname, './../lib/native.js' ) );
  var opts = {
  	'skip': ( addon instanceof Error )
  };
  
  
  // TESTS //
  
  tape( 'main export is a function', opts, function test( t ) {
  	t.ok( true, __filename );
  	t.strictEqual( typeof addon, 'function', 'main export is a function' );
  	t.end();
  });
  
  tape( 'the function throws an error if provided a first argument which is not a number', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		true,
  		false,
  		null,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( value, x, 1, y, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a second argument which is not a Float64Array', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		3.14,
  		NaN,
  		true,
  		false,
  		null,
  		void 0,
  		{},
  		[],
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( x.length, value, 1, y, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a third argument which is not a number', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		true,
  		false,
  		null,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( x.length, x, value, y, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a fourth argument which is not a Float64Array', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		3.14,
  		NaN,
  		true,
  		false,
  		null,
  		void 0,
  		{},
  		[],
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( y.length, x, 1, value, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a fifth argument which is not a number', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		true,
  		false,
  		null,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( x.length, x, 1, y, value, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a sixth argument which is not a Float64Array', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		3.14,
  		NaN,
  		true,
  		false,
  		null,
  		void 0,
  		{},
  		[],
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( z.length, x, 1, y, 1, value, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a seventh argument which is not a number', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		true,
  		false,
  		null,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( x.length );
  			var z = new Float64Array( x.length );
  			addon( x.length, x, 1, y, 1, z, value );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a second argument which has insufficient elements', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		new Float64Array( [] ),
  		new Float64Array( [ 1.0 ] ),
  		new Float64Array( [ 1.0, 2.0 ] ),
  		new Float64Array( [ 1.0, 2.0, 3.0 ] )
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var y = new Float64Array( 10 );
  			var z = new Float64Array( 10 );
  			addon( y.length, value, 1, y, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a fourth argument which has insufficient elements', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		new Float64Array( [] ),
  		new Float64Array( [ 1.0 ] ),
  		new Float64Array( [ 1.0, 2.0 ] ),
  		new Float64Array( [ 1.0, 2.0, 3.0 ] )
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var z = new Float64Array( 10 );
  			addon( x.length, x, 1, value, 1, z, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided a sixth argument which has insufficient elements', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		new Float64Array( [] ),
  		new Float64Array( [ 1.0 ] ),
  		new Float64Array( [ 1.0, 2.0 ] ),
  		new Float64Array( [ 1.0, 2.0, 3.0 ] )
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		t.throws( badValue( values[ i ] ), RangeError, 'throws an error when provided '+values[ i ] );
  	}
  	t.end();
  
  	function badValue( value ) {
  		return function badValue() {
  			var x = new Float64Array( 10 );
  			var y = new Float64Array( 10 );
  			addon( x.length, x, 1, y, 1, value, 1 );
  		};
  	}
  });
  
  tape( 'the function throws an error if provided insufficient arguments', opts, function test( t ) {
  	t.throws( foo, Error, 'throws an error' );
  	t.end();
  
  	function foo() {
  		addon();
  	}
  });
  
  tape( 'the function throws an error if provided too many arguments', opts, function test( t ) {
  	t.throws( foo, Error, 'throws an error' );
  	t.end();
  
  	function foo() {
  		var x = new Float64Array( 10 );
  		var y = new Float64Array( x.length );
  		var z = new Float64Array( x.length );
  		addon( x.length, x, 1, 0, y, 1, 0, z, 1, 0 );
  	}
  });
  
  tape( 'the function does not throw an error when provided valid arguments', opts, function test( t ) {
  	var x;
  	var y;
  	var z;
  
  	x = new Float64Array( 10 );
  	y = new Float64Array( x.length );
  	z = new Float64Array( x.length );
  
  	try {
  		addon( x.length, x, 1, y, 1, z, 1 );
  		t.ok( true, 'does not throw' );
  	} catch ( err ) {
  		t.ok( false, err.message );
  	}
  	t.end();
  });
  