feat: add fill method to array/uint64

lib/node_modules/@stdlib/array/uint64/README.md

@@ -309,6 +309,42 @@ The returned [iterator][mdn-iterator-protocol] protocol-compliant object has the
 -   **next**: function which returns an [iterator][mdn-iterator-protocol] protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the [iterator][mdn-iterator-protocol] is finished.
 -   **return**: function which closes an [iterator][mdn-iterator-protocol] and returns a single (optional) argument in an [iterator][mdn-iterator-protocol] protocol-compliant object.
 
+<a name="method-fill"></a>
+
+#### Uint64Array.prototype.fill( value\[, start\[, end]] )
+
+Returns a modified typed array filled with a fill value.
+
+```javascript
+var Uint64 = require( '@stdlib/number/uint64/ctor' );
+
+var arr = new Uint64Array( 3 );
+
+// Set all elements to the same value:
+arr.fill( new Uint64( 1 ) );
+// arr => <Uint64Array>[ 1n, 1n, 1n ]
+
+// Fill all elements starting from the second element:
+arr.fill( new Uint64( 2 ), 1 );
+// arr => <Uint64Array>[ 1n, 2n, 2n ]
+
+// Fill all elements from first element until the second-to-last element:
+arr.fill( new Uint64( 3 ), 0, 2 );
+// arr => <Uint64Array>[ 3n, 3n, 2n ]
+```
+
+When a `start` and/or `end` index is negative, the respective index is determined relative to the last array element.
+
+```javascript
+var Uint64 = require( '@stdlib/number/uint64/ctor' );
+
+var arr = new Uint64Array( 3 );
+
+// Set all array elements, except the last element, to the same value:
+arr.fill( new Uint64( 1 ), 0, -1 );
+// arr => <Uint64Array>[ 1n, 1n, 0n ]
+```
+
 <a name="method-get"></a>
 
 #### Uint64Array.prototype.get( i )

lib/node_modules/@stdlib/array/uint64/benchmark/benchmark.fill.js

@@ -0,0 +1,59 @@
+/**
+* @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 format = require( '@stdlib/string/format' );
+var isUint64Array = require( '@stdlib/assert/is-uint64array' );
+var Uint64 = require( '@stdlib/number/uint64/ctor' );
+var pkg = require( './../package.json' ).name;
+var Uint64Array = require( './../lib' );
+
+
+// MAIN //
+
+bench( format( '%s:fill', pkg ), function benchmark( b ) {
+	var values;
+	var arr;
+	var out;
+	var i;
+
+	values = [
+		new Uint64( 1 ),
+		new Uint64( 2 ),
+		new Uint64( 3 )
+	];
+	arr = new Uint64Array( 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 ( !isUint64Array( out ) ) {
+		b.fail( 'should return a Uint64Array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/array/uint64/benchmark/benchmark.fill.length.js

@@ -0,0 +1,103 @@
+/**
+* @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 format = require( '@stdlib/string/format' );
+var isUint64Array = require( '@stdlib/assert/is-uint64array' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Uint64 = require( '@stdlib/number/uint64/ctor' );
+var pkg = require( './../package.json' ).name;
+var Uint64Array = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var arr = new Uint64Array( len );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var values;
+		var out;
+		var i;
+
+		values = [
+			new Uint64( 1 ),
+			new Uint64( 2 ),
+			new Uint64( 3 )
+		];
+
+		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 ( !isUint64Array( out ) ) {
+			b.fail( 'should return a Uint64Array' );
+		}
+		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( format( '%s:fill:len=%d', pkg, len ), f );
+	}
+}
+
+main();

lib/node_modules/@stdlib/array/uint64/docs/repl.txt

@@ -275,6 +275,34 @@
     true
 
 
+{{alias}}.prototype.fill( value[, start[, end]] )
+    Returns a modified typed array filled with a fill value.
+
+    Parameters
+    ----------
+    value: Uint64
+        Fill value.
+
+    start: integer (optional)
+        Start index. If less than zero, the start index is resolved relative to
+        the last array element. Default: 0.
+
+    end: integer (optional)
+        End index (non-inclusive). If less than zero, the end index is resolved
+        relative to the last array element. Default: out.length.
+
+    Returns
+    -------
+    out: Uint64Array
+        Modified array.
+
+    Examples
+    --------
+    > var arr = new {{alias}}( 3 );
+    > arr.fill( 1 )
+    <Uint64Array>[ 1n, 1n, 1n ]
+
+
 {{alias}}.prototype.get( i )
     Returns an array element located at integer position (index) `i`.
 

lib/node_modules/@stdlib/array/uint64/docs/types/index.d.ts

@@ -28,7 +28,7 @@
 import ArrayBuffer = require( '@stdlib/array/buffer' );
 
 // Define a union type representing both iterable and non-iterable iterators:
 type Iterator = Iter | IterableIterator;
 
 // Define a type representing a value from which a 64-bit unsigned integer can be derived:
 type Uint = Uint64 | bigint | number;
@@ -36,7 +36,7 @@
 /**
 * Locale-specific configuration options.
 */
 interface LocaleOptions<T = unknown> {
 	/**
 	* Configuration property.
 	*/
@@ -118,7 +118,7 @@
 * @param arr - array on which the method was called
 * @returns boolean indicating whether an element in an array passes a test
 */
 type Predicate<U> = NullaryPredicate<U> | UnaryPredicate<U> | BinaryPredicate<U> | TernaryPredicate<U>;
 
 /**
 * Callback invoked for each element in an array.
@@ -162,7 +162,7 @@
 * @param arr - array on which the method was called
 * @returns undefined
 */
 type Callback<U> = NullaryCallback<U> | UnaryCallback<U> | BinaryCallback<U> | TernaryCallback<U>;
 
 /**
 * Callback invoked for each element in an array.
@@ -206,7 +206,7 @@
 * @param arr - array on which the method was called
 * @returns transformed value
 */
 type MapFcn<U> = NullaryMapFcn<U> | UnaryMapFcn<U> | BinaryMapFcn<U> | TernaryMapFcn<U>;
 
 /**
 * Reducer function invoked for each element in an array.
@@ -260,7 +260,7 @@
 * @param arr - array on which the method was called
 * @returns accumulated result
 */
 type Reducer<U> = NullaryReducer<U> | UnaryReducer<U> | BinaryReducer<U> | TernaryReducer<U> | QuaternaryReducer<U>;
 
 /**
 * Comparator function.
@@ -269,7 +269,7 @@
 * @param b - second value for comparison
 * @returns number indicating comparison result
 */
 type CompareFcn = ( a: Uint64, b: Uint64 ) => number;
 
 /**
 * Class for creating a 64-bit unsigned integer array.
@@ -454,6 +454,23 @@
 	*/
 	entries(): TypedIterator<[number, Uint64]>;
 
+	/**
+	* 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 arr = new Uint64Array( 3 );
+	* // returns <Uint64Array>[ 0n , 0n, 0n ]
+	*
+	* arr = arr.fill( 1, 1 );
+	* // returns <Uint64Array>[ 0n, 1n, 1n ]
+	*/
+	fill( value: Uint, start?: number, end?: number ): Uint64Array;
+
 	/**
 	* Returns an array element.
 	*

lib/node_modules/@stdlib/array/uint64/lib/main.js

@@ -702,6 +702,86 @@
 	}
 });
 
+/**
+* Returns a modified typed array filled with a fill value.
+*
+* @name fill
+* @memberof Uint64Array.prototype
+* @type {Function}
+* @param {(Uint64|bigint|number)} value - fill value
+* @param {integer} [start=0] - starting index (inclusive)
+* @param {integer} [end] - ending index (exclusive)
+* @throws {TypeError} `this` must be a 64-bit unsigned integer array
+* @throws {TypeError} first argument must be either a 64-bit unsigned integer or a value which can be converted to a 64-bit unsigned integer
+* @throws {TypeError} second argument must be an integer
+* @throws {TypeError} third argument must be an integer
+* @returns {Uint64Array} modified array
+*
+* @example
+* var arr = new Uint64Array( 3 );
+* // returns <Uint64Array>[ 0n , 0n, 0n ]
+*
+* arr = arr.fill( 1, 1 );
+* // returns <Uint64Array>[ 0n, 1n, 1n ]
+*/
+setReadOnly( Uint64Array.prototype, 'fill', function fill( value, start, end ) {
+	var words;
+	var buf;
+	var len;
+	var idx;
+	var i;
+	if ( !isUint64Array( this ) ) {
+		throw new TypeError( 'invalid invocation. `this` is not a 64-bit unsigned integer array.' );
+	}
+	if ( !isUint64( value ) ) {
+		try {
+			value = new Uint64( value );
+		} catch ( err ) { // eslint-disable-line no-unused-vars
+			throw new TypeError( format( 'invalid argument. First argument must be either a 64-bit unsigned integer or a value which can be converted to a 64-bit unsigned integer. Value: `%s`.', value ) );
+		}
+	}
+	buf = this._buffer;
+	len = this._length;
+	if ( arguments.length > 1 ) {
+		if ( !isInteger( start ) ) {
+			throw new TypeError( format( 'invalid argument. Second argument must be an integer. Value: `%s`.', start ) );
+		}
+		if ( start < 0 ) {
+			start += len;
+			if ( start < 0 ) {
+				start = 0;
+			}
+		}
+		if ( arguments.length > 2 ) {
+			if ( !isInteger( end ) ) {
+				throw new TypeError( format( 'invalid argument. Third argument must be an integer. Value: `%s`.', end ) );
+			}
+			if ( end < 0 ) {
+				end += len;
+				if ( end < 0 ) {
+					end = 0;
+				}
+			}
+			if ( end > len ) {
+				end = len;
+			}
+		} else {
+			end = len;
+		}
+	} else {
+		start = 0;
+		end = len;
+	}
+	words = [ 0, 0 ];
+	toWords( value, words, 1, 0 );
+	for ( i = start; i < end; i++ ) {
+		idx = 2*i;
+		buf[ idx+indices.HIGH ] = words[ 0 ];
+		buf[ idx+indices.LOW ] = words[ 1 ];
+	}
+	return this;
+});
+
 /**
 * Returns an array element.
 *
@@ -839,7 +919,7 @@
 		buf[ idx+indices.LOW ] = words[ 1 ];
 		return;
 	}
 	if ( isNonNegativeInteger( value ) || ( isBigInt( value ) && isNonNegativeInteger( Number( value ) ) ) ) {
 		if ( idx >= this._length ) {
 			throw new RangeError( format( 'invalid argument. Index argument is out-of-bounds. Value: `%u`.', idx ) );
 		}