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* @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 isCollection = require( '@stdlib/assert/is-collection' );
var dtypes = require( '@stdlib/array/dtypes' );
var dtype = require( '@stdlib/array/dtype' );
var contains = require( '@stdlib/array/base/assert/contains' );
var join = require( '@stdlib/array/base/join' );
var strided = require( '@stdlib/stats/base/range' ).ndarray;
var format = require( '@stdlib/string/format' );
// VARIABLES //
var IDTYPES = dtypes( 'real_and_generic' );
var GENERIC_DTYPE = 'generic';
// MAIN //
/**
* Computes the range of an array.
*
* @param {NumericArray} x - input array
* @throws {TypeError} first argument must be an array-like object
* @throws {TypeError} first argument must have a supported data type
* @returns {number} range
*
* @example
* var x = [ 1.0, -2.0, 2.0 ];
*
* var v = range( x );
* // returns 4.0
*/
function range( x ) {
var dt;
if ( !isCollection( x ) ) {
throw new TypeError( format( 'invalid argument. First argument must be an array-like object. Value: `%s`.', x ) );
}
dt = dtype( x ) || GENERIC_DTYPE;
if ( !contains( IDTYPES, dt ) ) {
throw new TypeError( format( 'invalid argument. First argument must have one of the following data types: "%s". Data type: `%s`.', join( IDTYPES, '", "' ), dt ) );
}
return strided( x.length, x, 1, 0 );
}
// EXPORTS //
module.exports = range;
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