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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';
// MODULES //
var zeros = require( '@stdlib/ndarray/zeros' );
var fill = require( '@stdlib/ndarray/base/fill' );
// MAIN //
/**
* Creates a ones-filled ndarray having a specified shape and data type.
*
* @param {(NonNegativeIntegerArray|NonNegativeInteger)} shape - array shape
* @param {Options} [options] - options
* @param {*} [options.dtype='float64'] - data type
* @param {string} [options.order='row-major'] - array order
* @param {string} [options.mode="throw"] - specifies how to handle indices which exceed array dimensions
* @param {ArrayLikeObject<string>} [options.submode=["throw"]] - specifies how to handle subscripts which exceed array dimensions on a per dimension basis
* @param {boolean} [options.readonly=false] - boolean indicating whether an array should be read-only
* @throws {TypeError} first argument must be either a nonnegative integer or an array of nonnegative integers
* @throws {TypeError} options argument must be an object
* @throws {TypeError} `dtype` option must be a recognized/supported data type
* @throws {TypeError} `order` option must be a recognized array order
* @throws {TypeError} must provide valid options
* @returns {ndarray} ndarray
*
* @example
* var getShape = require( '@stdlib/ndarray/shape' );
* var getDType = require( '@stdlib/ndarray/dtype' );
*
* var arr = ones( [ 2, 2 ], {
* 'dtype': 'float32'
* });
* // returns <ndarray>[ [ 1.0, 1.0 ], [ 1.0, 1.0 ] ]
*
* var sh = getShape( arr );
* // returns [ 2, 2 ]
*
* var dt = String( getDType( arr ) );
* // returns 'float32'
*/
function ones( shape ) {
// Note: we punt input validation to `zeros`, where we assume that the supported arguments and options are the same...
if ( arguments.length > 1 ) {
return fill( zeros( shape, arguments[ 1 ] ), 1.0 );
}
return fill( zeros( shape ), 1.0 );
}
// EXPORTS //
module.exports = ones;
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