time-to-botec

Benchmark sampling in different programming languages
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main.js (1177B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var PINF = require( '@stdlib/constants/float32/pinf' );
     24 
     25 
     26 // MAIN //
     27 
     28 /**
     29 * Tests if a single-precision floating-point numeric value is positive zero.
     30 *
     31 * @param {number} x - value to test
     32 * @returns {boolean} boolean indicating whether the value is positive zero
     33 *
     34 * @example
     35 * var bool = isPositiveZerof( 0.0 );
     36 * // returns true
     37 *
     38 * @example
     39 * var bool = isPositiveZerof( -0.0 );
     40 * // returns false
     41 */
     42 function isPositiveZerof( x ) {
     43 	return (x === 0.0 && 1.0/x === PINF);
     44 }
     45 
     46 
     47 // EXPORTS //
     48 
     49 module.exports = isPositiveZerof;