time-to-botec/js/node_modules/@stdlib/assert/has-int16array-support/lib/main.js
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00

67 lines
1.6 KiB
JavaScript

/**
* @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 isInt16Array = require( './../../is-int16array' );
var INT16_MAX = require( '@stdlib/constants/int16/max' );
var INT16_MIN = require( '@stdlib/constants/int16/min' );
var GlobalInt16Array = require( './int16array.js' );
// MAIN //
/**
* Tests for native `Int16Array` support.
*
* @returns {boolean} boolean indicating if an environment has `Int16Array` support
*
* @example
* var bool = hasInt16ArraySupport();
* // returns <boolean>
*/
function hasInt16ArraySupport() {
var bool;
var arr;
if ( typeof GlobalInt16Array !== 'function' ) {
return false;
}
// Test basic support...
try {
arr = new GlobalInt16Array( [ 1, 3.14, -3.14, INT16_MAX+1 ] );
bool = (
isInt16Array( arr ) &&
arr[ 0 ] === 1 &&
arr[ 1 ] === 3 && // truncation
arr[ 2 ] === -3 && // truncation
arr[ 3 ] === INT16_MIN // wrap around
);
} catch ( err ) { // eslint-disable-line no-unused-vars
bool = false;
}
return bool;
}
// EXPORTS //
module.exports = hasInt16ArraySupport;