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CHANGELOG.md

@@ -86,6 +86,28 @@
 
 <!-- /.package -->
 
+<section class="package" id="constants-float64-max-safe-nth-double-factorial-unreleased">
+
+#### [@stdlib/constants/float64/max-safe-nth-double-factorial](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float64/max-safe-nth-double-factorial)
+
+<details>
+
+<section class="features">
+
+##### Features
+
+-   [`d0ebce3`](https://github.com/stdlib-js/stdlib/commit/d0ebce3a1ed53532f2bee61096fa08400f534437) - add `constants/float64/max-safe-nth-double-factorial` [(#2966)](https://github.com/stdlib-js/stdlib/pull/2966)
+
+</section>
+
+<!-- /.features -->
+
+</details>
+
+</section>
+
+<!-- /.package -->
+
 <section class="package" id="constants-float64-num-high-word-significand-bits-unreleased">
 
 #### [@stdlib/constants/float64/num-high-word-significand-bits](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float64/num-high-word-significand-bits)
@@ -131,6 +153,7 @@ A total of 2 people contributed to this release. Thank you to the following cont
 
 <details>
 
+-   [`d0ebce3`](https://github.com/stdlib-js/stdlib/commit/d0ebce3a1ed53532f2bee61096fa08400f534437) - **feat:** add `constants/float64/max-safe-nth-double-factorial` [(#2966)](https://github.com/stdlib-js/stdlib/pull/2966) _(by Gunj Joshi, Athan Reines)_
 -   [`e6b6ffb`](https://github.com/stdlib-js/stdlib/commit/e6b6ffbbc11a52fe64529527ceb6e0afc2df31d1) - **feat:** add `constants/float32/max-safe-fibonacci` [(#2904)](https://github.com/stdlib-js/stdlib/pull/2904) _(by Gunj Joshi)_
 -   [`51787c8`](https://github.com/stdlib-js/stdlib/commit/51787c84fc5805a0144c2596ad8ac631470458b5) - **feat:** add `constants/float64/num-high-word-significand-bits` [(#2889)](https://github.com/stdlib-js/stdlib/pull/2889) _(by Gunj Joshi, Athan Reines)_
 -   [`511ae22`](https://github.com/stdlib-js/stdlib/commit/511ae22019022653f58464a98034b1821d979714) - **fix:** update folder name [(#2871)](https://github.com/stdlib-js/stdlib/pull/2871) _(by Gunj Joshi)_

float64/max-safe-nth-double-factorial/README.md

@@ -0,0 +1,166 @@
+<!--
+
+@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.
+
+-->
+
+# FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL
+
+> Maximum safe nth [double factorial][double-factorial] when stored in [double-precision floating-point][ieee754] format.
+
+<section class="usage">
+
+## Usage
+
+<!-- eslint-disable id-length -->
+
+```javascript
+var FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL = require( '@stdlib/constants/float64/max-safe-nth-double-factorial' );
+```
+
+#### FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL
+
+The maximum [safe][safe-integers] nth [double factorial][double-factorial] when stored in [double-precision floating-point][ieee754] format.
+
+<!-- eslint-disable id-length -->
+
+```javascript
+var bool = ( FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL === 301 );
+// returns true
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint-disable id-length -->
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL = require( '@stdlib/constants/float64/max-safe-nth-double-factorial' );
+
+function factorial( n ) {
+    var a;
+    var i;
+
+    a = 1;
+    for ( i = n; i >= 2; i -= 2 ) {
+        a *= i;
+    }
+    return a;
+}
+
+var v;
+var i;
+for ( i = 0; i < 400; i++ ) {
+    v = factorial( i );
+    if ( i > FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL ) {
+        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/float64/max_safe_nth_double_factorial.h"
+```
+
+#### STDLIB_CONSTANT_FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL
+
+Macro for the maximum [safe][safe-integers] nth [double factorial][double-factorial] when stored in [double-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
+
+[double-factorial]: https://en.wikipedia.org/wiki/Double_factorial
+
+[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985
+
+<!-- <related-links> -->
+
+<!-- </related-links> -->
+
+</section>
+
+<!-- /.links -->

float64/max-safe-nth-double-factorial/docs/repl.txt

@@ -0,0 +1,13 @@
+
+{{alias}}
+    Maximum safe nth double factorial when stored in double-precision floating-
+    point format.
+
+    Examples
+    --------
+    > {{alias}}
+    301
+
+    See Also
+    --------
+

float64/max-safe-nth-double-factorial/docs/types/index.d.ts

@@ -0,0 +1,33 @@
+/*
+* @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 nth double factorial when stored in double-precision floating-point format.
+*
+* @example
+* var max = FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL;
+* // returns 301
+*/
+declare const FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL: number;
+
+
+// EXPORTS //
+
+export = FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL;

float64/max-safe-nth-double-factorial/docs/types/test.ts

@@ -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 FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL = require( './index' );
+
+
+// TESTS //
+
+// The export is a number...
+{
+	// eslint-disable-next-line @typescript-eslint/no-unused-expressions
+	FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL; // $ExpectType number
+}

float64/max-safe-nth-double-factorial/examples/index.js

@@ -0,0 +1,43 @@
+/**
+* @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 FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL = require( './../lib' ); // eslint-disable-line id-length
+
+function factorial( n ) {
+	var a;
+	var i;
+
+	a = 1;
+	for ( i = n; i >= 2; i -= 2 ) {
+		a *= i;
+	}
+	return a;
+}
+
+var v;
+var i;
+for ( i = 0; i < 400; i++ ) {
+	v = factorial( i );
+	if ( i > FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL ) {
+		console.log( 'Unsafe: %d', v );
+	} else {
+		console.log( 'Safe:   %d', v );
+	}
+}

float64/max-safe-nth-double-factorial/include/stdlib/constants/float64/max_safe_nth_double_factorial.h

@@ -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_FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL
+#define STDLIB_CONSTANTS_FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL
+
+/**
+* Macro for the maximum safe nth double factorial when stored in double-precision floating-point format.
+*/
+#define STDLIB_CONSTANT_FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL 301
+
+#endif // !STDLIB_CONSTANTS_FLOAT64_MAX_SAFE_NTH_DOUBLE_FACTORIAL_H