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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 isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
var resolve = require( '@stdlib/ndarray/base/dtype-resolve-str' );
var table = require( './table.js' );
// VARIABLES //
var TABLE;
// MAIN //
/**
* Returns the alignment (in bytes) for an underlying array data type.
*
* ## Notes
*
* - If provided an unrecognized/unsupported data type, the function returns `null`.
*
* @param {*} [dtype] - data type value
* @returns {(Object|number|null)} alignment (in bytes)
*
* @example
* var obj = dtypeAlignment();
* // returns {...}
*
* @example
* var out = dtypeAlignment( 'float64' );
* // returns 8
*
* out = dtypeAlignment( 'generic' );
* // returns null
*/
function dtypeAlignment( dtype ) {
var v;
if ( arguments.length === 0 ) {
return table();
}
if ( TABLE === void 0 ) {
TABLE = table();
}
if ( dtype ) {
v = dtype.alignment;
if ( isPositiveInteger( v ) ) {
return v;
}
return TABLE[ resolve( dtype ) ] || null;
}
return null;
}
// EXPORTS //
module.exports = dtypeAlignment;
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