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 tape = require( 'tape' );
  var floor = require( '@stdlib/math/base/special/floor' );
  var isnan = require( '@stdlib/math/base/assert/is-nan' );
  var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
  var Float32Array = require( '@stdlib/array/float32' );
  var tryRequire = require( '@stdlib/utils/try-require' );
  
  
  // VARIABLES //
  
  var smaxabs = tryRequire( resolve( __dirname, './../lib/smaxabs.native.js' ) );
  var opts = {
  	'skip': ( smaxabs instanceof Error )
  };
  
  
  // TESTS //
  
  tape( 'main export is a function', opts, function test( t ) {
  	t.ok( true, __filename );
  	t.strictEqual( typeof smaxabs, 'function', 'main export is a function' );
  	t.end();
  });
  
  tape( 'the function has an arity of 3', opts, function test( t ) {
  	t.strictEqual( smaxabs.length, 3, 'has expected arity' );
  	t.end();
  });
  
  tape( 'the functions 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() {
  			smaxabs( value, new Float32Array( 10 ), 1 );
  		};
  	}
  });
  
  tape( 'the functions throws an error if provided a second argument which is not a Float32Array', opts, function test( t ) {
  	var values;
  	var i;
  
  	values = [
  		'5',
  		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() {
  			smaxabs( 10, value, 1 );
  		};
  	}
  });
  
  tape( 'the functions 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() {
  			smaxabs( 10, new Float32Array( 10 ), value );
  		};
  	}
  });
  
  tape( 'the function calculates the maximum absolute value of a strided array', opts, function test( t ) {
  	var x;
  	var v;
  
  	x = new Float32Array( [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ] );
  	v = smaxabs( x.length, x, 1 );
  	t.strictEqual( v, 5.0, 'returns expected value' );
  
  	x = new Float32Array( [ -4.0, -5.0 ] );
  	v = smaxabs( x.length, x, 1 );
  	t.strictEqual( v, 5.0, 'returns expected value' );
  
  	x = new Float32Array( [ -0.0, 0.0, -0.0 ] );
  	v = smaxabs( x.length, x, 1 );
  	t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
  
  	x = new Float32Array( [ NaN ] );
  	v = smaxabs( x.length, x, 1 );
  	t.strictEqual( isnan( v ), true, 'returns expected value' );
  
  	x = new Float32Array( [ NaN, NaN ] );
  	v = smaxabs( x.length, x, 1 );
  	t.strictEqual( isnan( v ), true, 'returns expected value' );
  
  	t.end();
  });
  
  tape( 'if provided an `N` parameter less than or equal to `0`, the function returns `NaN`', opts, function test( t ) {
  	var x;
  	var v;
  
  	x = new Float32Array( [ 1.0, -2.0, -4.0, 5.0, 3.0 ] );
  
  	v = smaxabs( 0, x, 1 );
  	t.strictEqual( isnan( v ), true, 'returns expected value' );
  
  	v = smaxabs( -1, x, 1 );
  	t.strictEqual( isnan( v ), true, 'returns expected value' );
  
  	t.end();
  });
  
  tape( 'if provided an `N` parameter equal to `1`, the function returns the first element', function test( t ) {
  	var x;
  	var v;
  
  	x = new Float32Array( [ -1.0, -2.0, -4.0, 5.0, 3.0 ] );
  
  	v = smaxabs( 1, x, 1 );
  	t.strictEqual( v, 1.0, 'returns expected value' );
  
  	t.end();
  });
  
  tape( 'the function supports a `stride` parameter', opts, function test( t ) {
  	var N;
  	var x;
  	var v;
  
  	x = new Float32Array([
  		1.0,  // 0
  		2.0,
  		2.0,  // 1
  		-7.0,
  		-2.0, // 2
  		3.0,
  		4.0,  // 3
  		2.0
  	]);
  
  	N = floor( x.length / 2 );
  	v = smaxabs( N, x, 2 );
  
  	t.strictEqual( v, 4.0, 'returns expected value' );
  	t.end();
  });
  
  tape( 'the function supports a negative `stride` parameter', opts, function test( t ) {
  	var N;
  	var x;
  	var v;
  
  	x = new Float32Array([
  		1.0,  // 3
  		2.0,
  		2.0,  // 2
  		-7.0,
  		-2.0, // 1
  		3.0,
  		4.0,  // 0
  		2.0
  	]);
  
  	N = floor( x.length / 2 );
  	v = smaxabs( N, x, -2 );
  
  	t.strictEqual( v, 4.0, 'returns expected value' );
  	t.end();
  });
  
  tape( 'if provided a `stride` parameter equal to `0`, the function returns the first element', opts, function test( t ) {
  	var x;
  	var v;
  
  	x = new Float32Array( [ -1.0, -2.0, -4.0, 5.0, 3.0 ] );
  
  	v = smaxabs( x.length, x, 0 );
  	t.strictEqual( v, 1.0, 'returns expected value' );
  
  	t.end();
  });
  
  tape( 'the function supports view offsets', opts, function test( t ) {
  	var x0;
  	var x1;
  	var N;
  	var v;
  
  	x0 = new Float32Array([
  		2.0,
  		1.0,  // 0
  		2.0,
  		-2.0, // 1
  		-2.0,
  		2.0,  // 2
  		3.0,
  		4.0,  // 3
  		6.0
  	]);
  
  	x1 = new Float32Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
  	N = floor(x1.length / 2);
  
  	v = smaxabs( N, x1, 2 );
  	t.strictEqual( v, 4.0, 'returns expected value' );
  
  	t.end();
  });
  