feat: add constants/float16/fourth-root-eps

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/README.md

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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 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_FOURTH_ROOT_EPS
+
+> [Fourth root][nth-root] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var FLOAT16_FOURTH_ROOT_EPS = require( '@stdlib/constants/float16/fourth-root-eps' );
+```
+
+#### FLOAT16_FOURTH_ROOT_EPS
+
+[Fourth root][nth-root] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].
+
+```javascript
+var bool = ( FLOAT16_FOURTH_ROOT_EPS === 0.1767578125 );
+// returns true
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var FLOAT16_FOURTH_ROOT_EPS = require( '@stdlib/constants/float16/fourth-root-eps' );
+
+var out = FLOAT16_FOURTH_ROOT_EPS;
+// returns 0.1767578125
+```
+
+</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/float16/fourth_root_eps.h"
+```
+
+#### STDLIB_CONSTANT_FLOAT16_FOURTH_ROOT_EPS
+
+Macro for the [fourth root][nth-root] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].
+
+</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">
+
+[nth-root]: https://en.wikipedia.org/wiki/Nth_root
+
+[@stdlib/constants/float16/eps]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float16/eps
+
+</section>
+
+<!-- /.links -->

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/docs/repl.txt

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+{{alias}}
+    Fourth root of half-precision floating-point epsilon.
+
+    Examples
+    --------
+    > {{alias}}
+    0.1767578125
+
+    See Also
+    --------

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/docs/types/index.d.ts

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+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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
+
+/**
+* Fourth root of half-precision floating-point epsilon.
+*
+* @example
+* var eps = FLOAT16_FOURTH_ROOT_EPS;
+* // returns 0.1767578125
+*/
+declare const FLOAT16_FOURTH_ROOT_EPS: number;
+
+
+// EXPORTS //
+
+export = FLOAT16_FOURTH_ROOT_EPS;

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/docs/types/test.ts

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+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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_FOURTH_ROOT_EPS = require( './index' );
+
+
+// TESTS //
+
+// The export is a number...
+{
+	// eslint-disable-next-line @typescript-eslint/no-unused-expressions
+	FLOAT16_FOURTH_ROOT_EPS; // $ExpectType number
+}

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/examples/index.js

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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_FOURTH_ROOT_EPS = require( './../lib' );
+
+console.log( FLOAT16_FOURTH_ROOT_EPS );
+// => 0.1767578125

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/include/stdlib/constants/float16/fourth_root_eps.h

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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_FLOAT16_FOURTH_ROOT_EPS_H
+#define STDLIB_CONSTANTS_FLOAT16_FOURTH_ROOT_EPS_H
+
+/**
+* Macro for the fourth root of half-precision floating-point epsilon.
+*/
+#define STDLIB_CONSTANT_FLOAT16_FOURTH_ROOT_EPS 0.1767578125f
+
+#endif /* !STDLIB_CONSTANTS_FLOAT16_FOURTH_ROOT_EPS_H */

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/lib/index.js

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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';
+
+/**
+* Fourth root of half-precision floating-point epsilon.
+*
+* @module @stdlib/constants/float16/fourth-root-eps
+* @type {number}
+*
+* @example
+* var FLOAT16_FOURTH_ROOT_EPS = require( '@stdlib/constants/float16/fourth-root-eps' );
+* // returns 0.1767578125
+*/
+
+
+// MAIN //
+
+/**
+* Fourth root of half-precision floating-point epsilon.
+*
+* ```tex
+* \sqrt{\sqrt{\frac{1}{2^{10}}}}
+* ```
+*
+* @constant
+* @type {number}
+* @default 0.1767578125
+* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
+* @see [Machine Epsilon]{@link https://en.wikipedia.org/wiki/Machine_epsilon}
+*/
+var FLOAT16_FOURTH_ROOT_EPS = 0.1767578125;
+
+
+// EXPORTS //
+
+module.exports = FLOAT16_FOURTH_ROOT_EPS;

lib/node_modules/@stdlib/constants/float16/fourth-root-eps/manifest.json

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+{
+  "options": {},
+  "fields": [
+    {
+      "field": "src",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "include",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "libraries",
+      "resolve": false,
+      "relative": false
+    },
+    {
+      "field": "libpath",
+      "resolve": true,
+      "relative": false
+    }
+  ],
+  "confs": [
+    {
+      "src": [],
+      "include": [
+        "./include"
+      ],
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+      "libpath": [],
+      "dependencies": []
+    }
+  ]
+}