feat: add math/base/special/acschf

lib/node_modules/@stdlib/_tools/README.md

@@ -32,6 +32,42 @@ This directory contains Node.js packages which are used for project development.
 
 <!-- /.intro -->
 
+<section class="usage">
+
+## Usage
+
+```javascript
+var tools = require( '@stdlib/_tools' );
+```
+
+#### tools
+
+Namespace containing project development utilities.
+
+```javascript
+var ns = tools;
+// returns null
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+```javascript
+var tools = require( '@stdlib/_tools' );
+
+console.log( tools );
+// => null
+```
+
+</section>
+
+<!-- /.examples -->
+
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">

lib/node_modules/@stdlib/_tools/eslint/rules/README.md

@@ -72,6 +72,7 @@ var eslint = rules;
 -   <span class="signature">[`no-dynamic-exports`][@stdlib/_tools/eslint/rules/no-dynamic-exports]</span><span class="delimiter">: </span><span class="description">ESLint rule enforcing that only statically analyzable values are exported.</span>
 -   <span class="signature">[`no-dynamic-require`][@stdlib/_tools/eslint/rules/no-dynamic-require]</span><span class="delimiter">: </span><span class="description">ESLint rule enforcing that `require()` calls have only string literals as arguments.</span>
 -   <span class="signature">[`no-empty-comments`][@stdlib/_tools/eslint/rules/no-empty-comments]</span><span class="delimiter">: </span><span class="description">ESLint rule to disallow empty comments.</span>
+-   <span class="signature">[`no-empty-lines-between-requires`][@stdlib/_tools/eslint/rules/no-empty-lines-between-requires]</span><span class="delimiter">: </span><span class="description">ESLint rule to enforce no empty lines between module-level require statements.</span>
 -   <span class="signature">[`no-error-string-concat`][@stdlib/_tools/eslint/rules/no-error-string-concat]</span><span class="delimiter">: </span><span class="description">ESLint rule disallowing string concatenation in error messages.</span>
 -   <span class="signature">[`no-immediate-require`][@stdlib/_tools/eslint/rules/no-immediate-require]</span><span class="delimiter">: </span><span class="description">ESLint rule enforcing that `require()` expressions are not immediately invoked.</span>
 -   <span class="signature">[`no-internal-require`][@stdlib/_tools/eslint/rules/no-internal-require]</span><span class="delimiter">: </span><span class="description">ESLint rule disallowing `require()` calls into internals of another stdlib package.</span>
@@ -417,6 +418,8 @@ console.log( getKeys( rules ) );
 
 [@stdlib/_tools/eslint/rules/no-empty-comments]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/_tools/eslint/rules/no-empty-comments
 
+[@stdlib/_tools/eslint/rules/no-empty-lines-between-requires]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/_tools/eslint/rules/no-empty-lines-between-requires
+
 [@stdlib/_tools/eslint/rules/no-error-string-concat]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/_tools/eslint/rules/no-error-string-concat
 
 [@stdlib/_tools/eslint/rules/no-immediate-require]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/_tools/eslint/rules/no-immediate-require

lib/node_modules/@stdlib/complex/float64/base/README.md

@@ -58,6 +58,7 @@ The namespace contains the following functions:
 <div class="namespace-toc">
 
 -   <span class="signature">[`add( z1, z2 )`][@stdlib/complex/float64/base/add]</span><span class="delimiter">: </span><span class="description">add two double-precision complex floating-point numbers.</span>
+-   <span class="signature">[`add3( z1, z2, z3 )`][@stdlib/complex/float64/base/add3]</span><span class="delimiter">: </span><span class="description">compute the sum of three double-precision complex floating-point numbers.</span>
 -   <span class="signature">[`div( z1, z2 )`][@stdlib/complex/float64/base/div]</span><span class="delimiter">: </span><span class="description">divide two double-precision complex floating-point numbers.</span>
 -   <span class="signature">[`identity( z )`][@stdlib/complex/float64/base/identity]</span><span class="delimiter">: </span><span class="description">evaluate the identity function of a double-precision complex floating-point number.</span>
 -   <span class="signature">[`muladd( alpha, x, y )`][@stdlib/complex/float64/base/mul-add]</span><span class="delimiter">: </span><span class="description">perform a multiply-add operation involving three double-precision complex floating-point numbers.</span>
@@ -117,6 +118,8 @@ console.log( objectKeys( ns ) );
 
 [@stdlib/complex/float64/base/add]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/complex/float64/base/add
 
+[@stdlib/complex/float64/base/add3]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/complex/float64/base/add3
+
 [@stdlib/complex/float64/base/div]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/complex/float64/base/div
 
 [@stdlib/complex/float64/base/identity]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/complex/float64/base/identity

lib/node_modules/@stdlib/math/base/special/acothf/README.md

@@ -0,0 +1,190 @@
+<!--
+
+@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.
+
+-->
+
+# acothf
+
+> Compute the [inverse hyperbolic cotangent][hyperbolic-arctangent] of a single-precision floating-point number.
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var acothf = require( '@stdlib/math/base/special/acothf' );
+```
+
+#### acothf( x )
+
+Computes the [inverse hyperbolic cotangent][hyperbolic-arctangent] of a single-precision floating-point number.
+
+```javascript
+var v = acothf( 2.0 );
+// returns ~0.5493
+
+v = acothf( 1.0 );
+// returns Infinity
+```
+
+The domain of the inverse hyperbolic cotangent is the union of the intervals `(-inf,-1]` and `[1,inf)`. If provided a value on the open interval `(-1,1)`, the function returns `NaN`.
+
+```javascript
+var v = acothf( 0.0 );
+// returns NaN
+
+v = acothf( 0.5 );
+// returns NaN
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var uniform = require( '@stdlib/random/array/uniform' );
+var logEachMap = require( '@stdlib/console/log-each-map' );
+var acothf = require( '@stdlib/math/base/special/acothf' );
+
+var x = uniform( 100, 1.0, 5.0, {
+    'dtype': 'float32'
+});
+
+logEachMap( 'acothf(%0.4f) = %0.4f', x, acothf );
+```
+
+</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/math/base/special/acothf.h"
+```
+
+#### stdlib_base_acothf( x )
+
+Computes the [inverse hyperbolic cotangent][hyperbolic-arctangent] of a single-precision floating-point number.
+
+```c
+float out = stdlib_base_acothf( 2.0f );
+// returns ~0.5493f
+```
+
+The function accepts the following arguments:
+
+-   **x**: `[in] float` input value.
+
+```c
+float stdlib_base_acothf( const float x );
+```
+
+</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">
+
+### Examples
+
+```c
+#include "stdlib/math/base/special/acothf.h"
+#include <stdio.h>
+
+int main( void ) {
+    const float x[] = { 1.0f, 1.44f, 1.89f, 2.33f, 2.78f, 3.22f, 3.67f, 4.11f, 4.56f, 5.0f };
+
+    float v;
+    int i;
+    for ( i = 0; i < 10; i++ ) {
+        v = stdlib_base_acothf( x[ i ] );
+        printf( "acothf(%f) = %f\n", x[ i ], v );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+* * *
+
+## See Also
+
+</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">
+
+[hyperbolic-arctangent]: https://en.wikipedia.org/wiki/Inverse_hyperbolic_function
+
+<!-- <related-links> -->
+
+<!-- </related-links> -->
+
+</section>
+
+<!-- /.links -->

lib/node_modules/@stdlib/math/base/special/acothf/benchmark/benchmark.js

@@ -0,0 +1,54 @@
+/**
+* @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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pkg = require( './../package.json' ).name;
+var acothf = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+	var x;
+	var y;
+	var i;
+
+	x = uniform( 100, 1.1, 100.0, {
+		'dtype': 'float32'
+	});
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		y = acothf( x[ i % x.length ] );
+		if ( isnanf( y ) ) {
+			b.fail( 'should not return NaN' );
+		}
+	}
+	b.toc();
+	if ( isnanf( y ) ) {
+		b.fail( 'should not return NaN' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/math/base/special/acothf/benchmark/benchmark.native.js

@@ -0,0 +1,64 @@
+/**
+* @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';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var acothf = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( acothf instanceof Error )
+};
+
+
+// MAIN //
+
+bench( format( '%s::native', pkg ), opts, function benchmark( b ) {
+	var x;
+	var y;
+	var i;
+
+	x = uniform( 100, 1.1, 100.0, {
+		'dtype': 'float32'
+	});
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		y = acothf( x[ i % x.length ] );
+		if ( isnanf( y ) ) {
+			b.fail( 'should not return NaN' );
+		}
+	}
+	b.toc();
+	if ( isnanf( y ) ) {
+		b.fail( 'should not return NaN' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});