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<!--

@license Apache-2.0

Copyright (c) 2024 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.

-->

# FLOAT32_MAX_SAFE_FIBONACCI

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

<section class="usage">

## Usage

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

```javascript
var FLOAT32_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float32/max-safe-fibonacci' );
```

#### FLOAT32_MAX_SAFE_FIBONACCI

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

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

```javascript
var bool = ( FLOAT32_MAX_SAFE_FIBONACCI === 14930352 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

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

```javascript
var FLOAT32_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float32/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 > FLOAT32_MAX_SAFE_FIBONACCI ) {
console.log( 'Unsafe: %d', v );
} else {
console.log( 'Safe: %d', v );
}
}
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

<!-- /.intro -->

<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/constants/float32/max_safe_fibonacci.h"
```

#### STDLIB_CONSTANT_FLOAT32_MAX_SAFE_FIBONACCI

Macro for the maximum [safe][safe-integers] [Fibonacci number][fibonacci-number] when stored in [single-precision floating-point][ieee754] format.

</section>

<!-- /.usage -->

<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

<!-- /.notes -->

<!-- C API usage examples. -->

<section class="examples">

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

<!-- 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

<!-- <related-links> -->

<!-- </related-links> -->

</section>

<!-- /.links -->
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{{alias}}
Maximum safe Fibonacci number when stored in single-precision floating-point
format.

Examples
--------
> {{alias}}
14930352

See Also
--------

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/*
* @license Apache-2.0
*
* Copyright (c) 2024 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 single-precision floating-point format.
*
* @example
* var max = FLOAT32_MAX_SAFE_FIBONACCI;
* // returns 14930352
*/
declare const FLOAT32_MAX_SAFE_FIBONACCI: number;


// EXPORTS //

export = FLOAT32_MAX_SAFE_FIBONACCI;
Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
/*
* @license Apache-2.0
*
* Copyright (c) 2024 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 FLOAT32_MAX_SAFE_FIBONACCI = require( './index' );


// TESTS //

// The export is a number...
{
// eslint-disable-next-line @typescript-eslint/no-unused-expressions
FLOAT32_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) 2024 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 FLOAT32_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 > FLOAT32_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 +1,27 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2024 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.
*/

#ifndef STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_FIBONACCI_H
#define STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_FIBONACCI_H

/**
* Macro for the maximum safe Fibonacci number when stored in single-precision floating-point format.
*/
#define STDLIB_CONSTANT_FLOAT32_MAX_SAFE_FIBONACCI 14930352

#endif // !STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_FIBONACCI_H
Original file line number Diff line number Diff line change
@@ -0,0 +1,49 @@
/**
* @license Apache-2.0
*
* Copyright (c) 2024 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 single-precision floating-point format.
*
* @module @stdlib/constants/float32/max-safe-fibonacci
* @type {integer}
*
* @example
* var FLOAT32_MAX_SAFE_FIBONACCI = require( '@stdlib/constants/float32/max-safe-fibonacci' );
* // returns 14930352
*/


// MAIN //

/**
* The maximum safe Fibonacci number when stored in single-precision floating-point format.
*
* @constant
* @type {integer}
* @default 14930352
* @see [Fibonacci number]{@link https://en.wikipedia.org/wiki/Fibonacci_number}
* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
*/
var FLOAT32_MAX_SAFE_FIBONACCI = 14930352; // eslint-disable-line id-length


// EXPORTS //

module.exports = FLOAT32_MAX_SAFE_FIBONACCI;
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