76 lines
1.7 KiB
JavaScript
76 lines
1.7 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';
|
|
|
|
/**
|
|
* Single-precision floating-point negative infinity.
|
|
*
|
|
* @module @stdlib/constants/float32/ninf
|
|
* @type {number}
|
|
*
|
|
* @example
|
|
* var FLOAT32_NINF = require( '@stdlib/constants/float32/ninf' );
|
|
* // returns -infinity
|
|
*/
|
|
|
|
// MODULES //
|
|
|
|
var Float32Array = require( '@stdlib/array/float32' );
|
|
var Uint32Array = require( '@stdlib/array/uint32' );
|
|
|
|
|
|
// VARIABLES //
|
|
|
|
var FLOAT32_VIEW = new Float32Array( 1 );
|
|
var UINT32_VIEW = new Uint32Array( FLOAT32_VIEW.buffer );
|
|
var v;
|
|
|
|
|
|
// MAIN //
|
|
|
|
/**
|
|
* Single-precision floating-point negative infinity.
|
|
*
|
|
* ## Notes
|
|
*
|
|
* Single-precision floating-point negative infinity has the bit sequence
|
|
*
|
|
* ```binarystring
|
|
* 1 11111111 00000000000000000000000
|
|
* ```
|
|
*
|
|
* This bit sequence corresponds to the unsigned 32-bit integer `4286578688` and to the HEX value `0xff800000`.
|
|
*
|
|
* @constant
|
|
* @type {number}
|
|
* @default 0xff800000
|
|
* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
|
|
*/
|
|
var FLOAT32_NINF = 0xff800000;
|
|
|
|
// Set the ArrayBuffer bit sequence:
|
|
UINT32_VIEW[ 0 ] = FLOAT32_NINF;
|
|
|
|
v = FLOAT32_VIEW[ 0 ];
|
|
|
|
|
|
// EXPORTS //
|
|
|
|
module.exports = v;
|