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* @license Apache-2.0
*
* Copyright (c) 2018 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 isFloat32Array = require( '@stdlib/assert/is-float32array' );
var PINF = require( '@stdlib/constants/float64/pinf' );
var GlobalFloat32Array = require( './float32array.js' );
// MAIN //
/**
* Tests for native `Float32Array` support.
*
* @returns {boolean} boolean indicating if an environment has `Float32Array` support
*
* @example
* var bool = hasFloat32ArraySupport();
* // returns <boolean>
*/
function hasFloat32ArraySupport() {
var bool;
var arr;
if ( typeof GlobalFloat32Array !== 'function' ) {
return false;
}
// Test basic support...
try {
arr = new GlobalFloat32Array( [ 1.0, 3.14, -3.14, 5.0e40 ] );
bool = (
isFloat32Array( arr ) &&
arr[ 0 ] === 1.0 &&
arr[ 1 ] === 3.140000104904175 &&
arr[ 2 ] === -3.140000104904175 &&
arr[ 3 ] === PINF
);
} catch ( err ) { // eslint-disable-line no-unused-vars
bool = false;
}
return bool;
}
// EXPORTS //
module.exports = hasFloat32ArraySupport;
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