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README.md

@@ -887,6 +887,114 @@ var count = context.count;
 // returns 3
 ```
 
+<a name="method-fill"></a>
+
+#### Complex64Array.prototype.fill( value\[, start\[, end]] )
+
+Returns a modified typed array filled with a fill value.
+
+```javascript
+var Complex64 = require( '@stdlib/complex-float32' );
+var realf = require( '@stdlib/complex-realf' );
+var imagf = require( '@stdlib/complex-imagf' );
+
+var arr = new Complex64Array( 3 );
+
+// Set all elements to the same value:
+arr.fill( new Complex64( 1.0, 1.0 ) );
+
+var z = arr.get( 0 );
+// returns <Complex64>
+
+var re = realf( z );
+// returns 1.0
+
+var im = imagf( z );
+// returns 1.0
+
+z = arr.get( 2 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 1.0
+
+im = imagf( z );
+// returns 1.0
+
+// Fill all elements starting from the second element:
+arr.fill( new Complex64( 2.0, 2.0 ), 1 );
+
+z = arr.get( 1 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 2.0
+
+im = imagf( z );
+// returns 2.0
+
+z = arr.get( 2 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 2.0
+
+im = imagf( z );
+// returns 2.0
+
+// Fill all elements from first element until the second-to-last element:
+arr.fill( new Complex64( 3.0, 3.0 ), 0, 2 );
+
+z = arr.get( 0 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 3.0
+
+im = imagf( z );
+// returns 3.0
+
+z = arr.get( 1 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 3.0
+
+im = imagf( z );
+// returns 3.0
+```
+
+When a `start` and/or `end` index is negative, the respective index is determined relative to the last array element.
+
+```javascript
+var Complex64 = require( '@stdlib/complex-float32' );
+var realf = require( '@stdlib/complex-realf' );
+var imagf = require( '@stdlib/complex-imagf' );
+
+var arr = new Complex64Array( 3 );
+
+// Set all array elements, except the last element, to the same value:
+arr.fill( new Complex64( 1.0, 1.0 ), 0, -1 );
+
+var z = arr.get( 0 );
+// returns <Complex64>
+
+var re = realf( z );
+// returns 1.0
+
+var im = imagf( z );
+// returns 1.0
+
+z = arr.get( arr.length - 1 );
+// returns <Complex64>
+
+re = realf( z );
+// returns 0.0
+
+im = imagf( z );
+// returns 0.0
+```
+
 <a name="method-filter"></a>
 
 #### Complex64Array.prototype.filter( predicate\[, thisArg] )

benchmark/benchmark.fill.js

@@ -0,0 +1,58 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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-harness' );
+var Complex64 = require( '@stdlib/complex-float32' );
+var isComplex64Array = require( '@stdlib/assert-is-complex64array' );
+var pkg = require( './../package.json' ).name;
+var Complex64Array = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg+':fill', function benchmark( b ) {
+	var values;
+	var arr;
+	var out;
+	var i;
+
+	values = [
+		new Complex64( 1.0, 1.0 ),
+		new Complex64( 2.0, 2.0 ),
+		new Complex64( 3.0, 3.0 )
+	];
+	arr = new Complex64Array( 5 );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		out = arr.fill( values[ i%values.length ] );
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an object' );
+		}
+	}
+	b.toc();
+	if ( !isComplex64Array( out ) ) {
+		b.fail( 'should return a Complex64Array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

benchmark/benchmark.fill.length.js

@@ -0,0 +1,102 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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-harness' );
+var pow = require( '@stdlib/math-base-special-pow' );
+var Complex64 = require( '@stdlib/complex-float32' );
+var isComplex64Array = require('@stdlib/assert-is-complex64array');
+var pkg = require( './../package.json' ).name;
+var Complex64Array = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var arr = new Complex64Array( len );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var values;
+		var out;
+		var i;
+
+		values = [
+			new Complex64( 1.0, 1.0 ),
+			new Complex64( 2.0, 2.0 ),
+			new Complex64( 3.0, 3.0 )
+		];
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			out = arr.fill( values[ i%values.length ] );
+			if ( typeof out !== 'object' ) {
+				b.fail( 'should return an object' );
+			}
+		}
+		b.toc();
+		if ( !isComplex64Array( out ) ) {
+			b.fail( 'should return a Complex64Array' );
+		}
+		b.pass( 'benchmark finished' );
+		b.end();
+	}
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+	var len;
+	var min;
+	var max;
+	var f;
+	var i;
+
+	min = 1; // 10^min
+	max = 6; // 10^max
+
+	for ( i = min; i <= max; i++ ) {
+		len = pow( 10, i );
+		f = createBenchmark( len );
+		bench( pkg+':fill:len='+len, f );
+	}
+}
+
+main();

docs/types/index.d.ts

@@ -433,6 +433,42 @@ declare class Complex64Array implements Complex64ArrayInterface {
 	*/
 	every<U = unknown>( predicate: Predicate<U>, thisArg?: ThisParameterType<Predicate<U>> ): boolean;
 
+	/**
+	* Returns a modified typed array filled with a fill value.
+	*
+	* @param value - fill value
+	* @param start - starting index (inclusive)
+	* @param end - ending index (exclusive)
+	* @returns modified typed array
+	*
+	* @example
+	* var realf = require( '@stdlib/complex-realf' );
+	* var imagf = require( '@stdlib/complex-imagf' );
+	*
+	* var arr = new Complex64Array( 3 );
+	*
+	* arr.fill( new Complex64( 1.0, 1.0 ), 1 );
+	*
+	* var z = arr.get( 1 );
+	* // returns <Complex64>
+	*
+	* var re = realf( z );
+	* // returns 1.0
+	*
+	* var im = imagf( z );
+	* // returns 1.0
+	*
+	* z = arr.get( 2 );
+	* // returns <Complex64>
+	*
+	* re = realf( z );
+	* // returns 1.0
+	*
+	* im = imagf( z );
+	* // returns 1.0
+	*/
+	fill( value: ComplexLike, start?: number, end?: number ): Complex64Array;
+
 	/**
 	* Returns a new array containing the elements of an array which pass a test implemented by a predicate function.
 	*