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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 toWords = require( '@stdlib/number/uint64/base/to-words' ).assign;
var format = require( '@stdlib/string/format' );
var scalarToUint64 = require( './scalar_to_uint64.js' );
// MAIN //
/**
* Returns an array of iterated values.
*
* @private
* @param {Object} it - iterator
* @param {Function} clbk - callback to invoke for each iterated value
* @param {*} thisArg - invocation context
* @returns {(Array|TypeError)} array or an error
*/
function fromIteratorMap( it, clbk, thisArg ) {
var words;
var out;
var v;
var u;
var i;
// Workspace for storing high and low words:
words = [ 0, 0 ];
out = [];
i = -1;
while ( true ) {
v = it.next();
if ( v.done ) {
break;
}
i += 1;
u = scalarToUint64( clbk.call( thisArg, v.value, i ) );
if ( u instanceof Error ) {
return new TypeError( format( 'invalid argument. An iterator must return either a 64-bit unsigned integer or a value which can be converted to a 64-bit unsigned integer. Value: `%s`.', u ) );
}
toWords( u, words, 1, 0 );
out.push( words[ 0 ], words[ 1 ] );
}
return out;
}
// EXPORTS //
module.exports = fromIteratorMap;
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