feat: add assign and strided methods to csignumf

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

@@ -2,7 +2,7 @@
 
 @license Apache-2.0
 
-Copyright (c) 2025 The Stdlib Authors.
+Copyright (c) 2018 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.
@@ -22,16 +22,12 @@ limitations under the License.
 
 > Evaluate the [signum][signum] function of a single-precision complex floating-point number.
 
-<!-- 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 -->
 
-<!-- Package usage documentation. -->
-
 <section class="usage">
 
 ## Usage
@@ -77,26 +73,44 @@ im = imag( v );
 // returns NaN
 ```
 
-</section>
+#### csignumf.assign( re, im, out, strideOut, offsetOut )
 
-<!-- /.usage -->
+Evaluates the signum function and assigns the result to a provided output array.
 
-<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
 
-<section class="notes">
+var out = new Float32Array( 2 );
+var v = csignumf.assign( -4.2, 5.5, out, 1, 0 );
+// returns <Float32Array>[ ~-0.607, ~0.795 ]
 
-</section>
+var bool = ( out === v );
+// returns true
+```
 
-<!-- /.notes -->
+#### csignumf.strided( z, sz, oz, out, so, oo )
 
-<!-- Package usage examples. -->
+Evaluates the signum function for single-precision complex numbers stored in a real-valued strided array and assigns results to a strided output array.
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+var z = new Float32Array( [ -4.2, 5.5 ] );
+var out = new Float32Array( 2 );
+
+var v = csignumf.strided( z, 1, 0, out, 1, 0 );
+// returns <Float32Array>[ ~-0.607, ~0.795 ]
+
+var bool = ( out === v );
+// returns true
+```
+
+</section>
 
 <section class="examples">
 
 ## Examples
 
-<!-- eslint no-undef: "error" -->
-
 ```javascript
 var uniform = require( '@stdlib/random/base/uniform' ).factory;
 var Complex64 = require( '@stdlib/complex/float32/ctor' );

lib/node_modules/@stdlib/math/base/special/csignumf/benchmark/benchmark.assign.js

@@ -0,0 +1,69 @@
+/**
+* @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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var Float32Array = require( '@stdlib/array/float32' );
+var pkg = require( './../package.json' ).name;
+var csignumf = require( './../lib' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float32'
+};
+
+
+// MAIN //
+
+bench( pkg+':assign', function benchmark( b ) {
+	var out;
+	var re;
+	var im;
+	var N;
+	var i;
+	var j;
+
+	N = 100;
+	re = uniform( N, -500.0, 500.0, options );
+	im = uniform( N, -500.0, 500.0, options );
+
+	out = new Float32Array( 2 );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		j = i % N;
+		out = csignumf.assign( re[ j ], im[ j ], out, 1, 0 );
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an object' );
+		}
+	}
+	b.toc();
+
+	if ( isnanf( out[ 0 ] ) || isnanf( out[ 1 ] ) ) {
+		b.fail( 'should not return NaN' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/math/base/special/csignumf/benchmark/benchmark.strided.js

@@ -0,0 +1,65 @@
+/**
+* @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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var Float32Array = require( '@stdlib/array/float32' );
+var pkg = require( './../package.json' ).name;
+var csignumf = require( './../lib' );
+
+
+// VARIABLES //
+
+var options = {
+	'dtype': 'float32'
+};
+
+
+// MAIN //
+
+bench( pkg+':strided', function benchmark( b ) {
+	var out;
+	var z;
+	var N;
+	var i;
+	var j;
+
+	N = 50;
+	z = uniform( N*2, -500.0, 500.0, options );
+	out = new Float32Array( 2 );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		j = ( i % N ) * 2;
+		out = csignumf.strided( z, 1, j, out, 1, 0 );
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an object' );
+		}
+	}
+	b.toc();
+	if ( isnan( out[ 0 ] ) || isnan( out[ 1 ] ) ) {
+		b.fail( 'should not return NaN' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/math/base/special/csignumf/docs/repl.txt

@@ -1,7 +1,6 @@
-
 {{alias}}( z )
-    Evaluates the signum function of a single-precision complex floating-point
-    number.
+    Evaluates the signum function of a single-precision
+    complex floating-point number.
 
     Parameters
     ----------
@@ -15,13 +14,91 @@
 
     Examples
     --------
-    > var v = {{alias}}( new {{alias:@stdlib/complex/float32/ctor}}( -4.2, 5.5 ) )
+    > var Complex64 = {{alias:@stdlib/complex/float32/ctor}}
+    <Function>
+    > var realf = {{alias:@stdlib/complex/float32/real}}
+    <Function>
+    > var imagf = {{alias:@stdlib/complex/float32/imag}}
+    <Function>
+    > var v = {{alias}}( new Complex64( -4.2, 5.5 ) )
     <Complex64>
-    > var re = {{alias:@stdlib/complex/float32/real}}( v )
+    > var re = realf( v )
     ~-0.607
-    > var im = {{alias:@stdlib/complex/float32/imag}}( v )
+    > var im = imagf( v )
     ~0.795
 
+
+{{alias}}.assign( re, im, out, stride, offset )
+    Evaluates the signum function and assigns the result to a
+    provided output array.
+
+    Parameters
+    ----------
+    re: number
+        Real component.
+
+    im: number
+        Imaginary component.
+
+    out: Float32Array
+        Output array.
+
+    stride: integer
+        Output stride length.
+
+    offset: integer
+        Starting index for output.
+
+    Returns
+    -------
+    out: Float32Array
+        Output array.
+
+    Examples
+    --------
+    > var out = new Float32Array( 2 );
+    > {{alias}}.assign( -4.2, 5.5, out, 1, 0 )
+    <Float32Array>[ ~-0.607, ~0.795 ]
+
+
+{{alias}}.strided( z, sz, oz, out, so, oo )
+    Evaluates the signum function for single-precision complex numbers
+    stored in a real-valued strided input array and assigns
+    the results to a strided output array.
+
+    Parameters
+    ----------
+    z: Float32Array
+        Input array containing interleaved real and imaginary components.
+
+    sz: integer
+        Input stride length.
+
+    oz: integer
+        Starting index for input.
+
+    out: Float32Array
+        Output array.
+
+    so: integer
+        Output stride length.
+
+    oo: integer
+        Starting index for output.
+
+    Returns
+    -------
+    out: Float32Array
+        Output array.
+
+    Examples
+    --------
+    > var z = new Float32Array( [ -4.2, 5.5 ] );
+    > var out = new Float32Array( 2 );
+    > {{alias}}.strided( z, 1, 0, out, 1, 0 )
+    <Float32Array>[ ~-0.607, ~0.795 ]
+
+
     See Also
     --------