Skip to content
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Original file line number Diff line number Diff line change
@@ -0,0 +1,114 @@
<!--

@license Apache-2.0

Copyright (c) 2025 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.

-->

# FLOAT16_MAX_SAFE_FIBONACCI

> Maximum safe [Fibonacci number][fibonacci-number] when stored in [half-precision floating-point][ieee754] format.

<section class="usage">

## Usage

<!-- eslint-disable id-length -->

```javascript
var FLOAT16_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float16/max-safe-fibonacci' );
```

#### FLOAT16_MAX_SAFE_FIBONACCI

The maximum [safe][safe-integers] [Fibonacci number][fibonacci-number] when stored in [half-precision floating-point][ieee754] format.

<!-- eslint-disable id-length -->

```javascript
var bool = ( FLOAT16_MAX_SAFE_FIBONACCI === 46368 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint-disable id-length -->

<!-- eslint no-undef: "error" -->

```javascript
var FLOAT16_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float16/max-safe-fibonacci' );

var v;
var i;

function fibonacci( n ) {
var a;
var b;
var c;
var i;

a = 1;
b = 1;
for ( i = 3; i <= n; i++ ) {
c = a + b;
a = b;
b = c;
}
return b;
}

for ( i = 0; i < 50; i++ ) {
v = fibonacci( i );
if ( v > FLOAT16_MAX_SAFE_FIBONACCI ) {
console.log( 'Unsafe: %d', v );
} else {
console.log( 'Safe: %d', v );
}
}
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[safe-integers]: http://www.2ality.com/2013/10/safe-integers.html

[fibonacci-number]: https://en.wikipedia.org/wiki/Fibonacci_number

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985

</section>

<!-- /.links -->
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@

{{alias}}
Maximum safe Fibonacci number when stored in half-precision floating-point
format.

Examples
--------
> {{alias}}
46368

See Also
--------

Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
/*
* @license Apache-2.0
*
* Copyright (c) 2025 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.
*/

// TypeScript Version: 4.1

/**
* Maximum safe Fibonacci number when stored in half-precision floating-point format.
*
* @example
* var max = FLOAT16_MAX_SAFE_FIBONACCI;
* // returns 46368
*/
declare const FLOAT16_MAX_SAFE_FIBONACCI: number;


// EXPORTS //

export = FLOAT16_MAX_SAFE_FIBONACCI;
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
/*
* @license Apache-2.0
*
* Copyright (c) 2025 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.
*/

import FLOAT16_MAX_SAFE_FIBONACCI = require( './index' );


// TESTS //

// The export is a number...
{
// eslint-disable-next-line @typescript-eslint/no-unused-expressions
FLOAT16_MAX_SAFE_FIBONACCI; // $ExpectType number
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,49 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2025 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';

var FLOAT16_MAX_SAFE_FIBONACCI = require( './../lib' ); // eslint-disable-line id-length

var v;
var i;

function fibonacci( n ) {
var a;
var b;
var c;
var i;

a = 1;
b = 1;
for ( i = 3; i <= n; i++ ) {
c = a + b;
a = b;
b = c;
}
return b;
}

for ( i = 0; i < 50; i++ ) {
v = fibonacci( i );
if ( v > FLOAT16_MAX_SAFE_FIBONACCI ) {
console.log( 'Unsafe: %d', v );
} else {
console.log( 'Safe: %d', v );
}
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,49 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2025 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';

/**
* Maximum safe Fibonacci number when stored in half-precision floating-point format.
*
* @module @stdlib/constants/float16/max-safe-fibonacci
* @type {integer}
*
* @example
* var FLOAT16_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float16/max-safe-fibonacci' );
* // returns 46368
*/


// MAIN //

/**
* The maximum safe Fibonacci number when stored in half-precision floating-point format.
*
* @constant
* @type {integer}
* @default 46368
* @see [Fibonacci number]{@link https://en.wikipedia.org/wiki/Fibonacci_number}
* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
*/
var FLOAT16_MAX_SAFE_FIBONACCI = 46368; // eslint-disable-line id-length


// EXPORTS //

module.exports = FLOAT16_MAX_SAFE_FIBONACCI;
Original file line number Diff line number Diff line change
@@ -0,0 +1,71 @@
{
"name": "@stdlib/constants/float16/max-safe-fibonacci",
"version": "0.0.0",
"description": "Maximum safe Fibonacci number when stored in half-precision floating-point format.",
"license": "Apache-2.0",
"author": {
"name": "The Stdlib Authors",
"url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
},
"contributors": [
{
"name": "The Stdlib Authors",
"url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
}
],
"main": "./lib",
"directories": {
"doc": "./docs",
"example": "./examples",
"lib": "./lib",
"test": "./test"
},
"types": "./docs/types",
"scripts": {},
"homepage": "https://github.com/stdlib-js/stdlib",
"repository": {
"type": "git",
"url": "git://github.com/stdlib-js/stdlib.git"
},
"bugs": {
"url": "https://github.com/stdlib-js/stdlib/issues"
},
"dependencies": {},
"devDependencies": {},
"engines": {
"node": ">=0.10.0",
"npm": ">2.7.0"
},
"os": [
"aix",
"darwin",
"freebsd",
"linux",
"macos",
"openbsd",
"sunos",
"win32",
"windows"
],
"keywords": [
"stdlib",
"stdmath",
"constant",
"const",
"max",
"maximum",
"fibonacci",
"number",
"fib",
"safe",
"integer",
"float",
"flt",
"floating",
"point",
"floating-point",
"float16",
"f16",
"ieee754"
]
}
Loading