Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat: add constants/float32/max-safe-lucas #6374

Merged
merged 4 commits into from
Apr 2, 2025
Merged
Show file tree
Hide file tree
Changes from 2 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
165 changes: 165 additions & 0 deletions lib/node_modules/@stdlib/constants/float32/max-safe-lucas/README.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,165 @@
<!--

@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.

-->

# FLOAT32_MAX_SAFE_LUCAS

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

<section class="usage">

## Usage

```javascript
var FLOAT32_MAX_SAFE_LUCAS = require( '@stdlib/constants/float32/max-safe-lucas' );
```

#### FLOAT32_MAX_SAFE_LUCAS

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

```javascript
var bool = ( FLOAT32_MAX_SAFE_LUCAS === 12752043 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var FLOAT32_MAX_SAFE_LUCAS = require( '@stdlib/constants/float32/max-safe-lucas' );

var v;
var i;

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

a = 2;
if ( n === 0 ) {
return a;
}
b = 1;
for ( i = 2; i <= n; i++ ) {
c = a + b;
a = b;
b = c;
}
return b;
}

for ( i = 0; i < 100; i++ ) {
v = lucas( i );
if ( v > FLOAT32_MAX_SAFE_LUCAS ) {
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_lucas.h"
```

#### STDLIB_CONSTANT_FLOAT32_MAX_SAFE_LUCAS

Macro for the maximum [safe][safe-integers] [Lucas number][lucas-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

[lucas-number]: https://en.wikipedia.org/wiki/Lucas_number

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

</section>

<!-- /.links -->
Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@

{{alias}}
Maximum safe Lucas number when stored in single-precision floating-point
format.

Examples
--------
> {{alias}}
12752043

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 Lucas number when stored in single-precision floating-point format.
*
* @example
* var max = FLOAT32_MAX_SAFE_LUCAS;
* // returns 12752043
*/
declare const FLOAT32_MAX_SAFE_LUCAS: number;


// EXPORTS //

export = FLOAT32_MAX_SAFE_LUCAS;
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 FLOAT32_MAX_SAFE_LUCAS = require( './index' );


// TESTS //

// The export is a number...
{
// eslint-disable-next-line @typescript-eslint/no-unused-expressions
FLOAT32_MAX_SAFE_LUCAS; // $ExpectType number
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
/**
* @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 FLOAT32_MAX_SAFE_LUCAS = require( './../lib' );

var v;
var i;

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

a = 2;
if ( n === 0 ) {
return a;
}
b = 1;
for ( i = 2; i <= n; i++ ) {
c = a + b;
a = b;
b = c;
}
return b;
}

for ( i = 0; i < 100; i++ ) {
v = lucas( i );
if ( v > FLOAT32_MAX_SAFE_LUCAS ) {
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) 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.
*/

#ifndef STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_LUCAS_H
#define STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_LUCAS_H

/**
* Macro for the maximum safe Lucas number when stored in single-precision floating-point format.
*/
#define STDLIB_CONSTANT_FLOAT32_MAX_SAFE_LUCAS 12752043f

#endif // !STDLIB_CONSTANTS_FLOAT32_MAX_SAFE_LUCAS_H
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 Lucas number when stored in single-precision floating-point format.
*
* @module @stdlib/constants/float32/max-safe-lucas
* @type {integer}
*
* @example
* var FLOAT32_MAX_SAFE_LUCAS = require( '@stdlib/constants/float32/max-safe-lucas' );
* // returns 12752043
*/


// MAIN //

/**
* The maximum safe Lucas number when stored in single-precision floating-point format.
*
* @constant
* @type {integer}
* @default 12752043
* @see [Lucas number]{@link https://en.wikipedia.org/wiki/Lucas_number}
* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
*/
var FLOAT32_MAX_SAFE_LUCAS = 12752043;


// EXPORTS //

module.exports = FLOAT32_MAX_SAFE_LUCAS;
Loading