All files / blas/base/zher2/lib index.js

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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';
 
/**
* Perform the hermitian rank 1 operation `A = alpha*x*x**H + A`, where `alpha` is a real scalar, `X` is an `N` element vector and `A` is an `N` by `N` hermitian matrix.
*
* @module @stdlib/blas/base/zher2
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
* var zher2 = require( '@stdlib/blas/base/zher2' );
*
* var x = new Complex128Array( [ 1.0, 1.0, 1.0, 1.0 ] );
* var y = new Complex128Array( [ 1.0, 1.0, 1.0, 1.0 ] );
* var A = new Complex128Array( [ 1.0, 0.0, 0.0, 0.0, 2.0, 3.0, 4.0, 0.0 ] );
* var alpha = new Complex128( 1.0, 0.0 );
*
* zher2( 'row-major', 'lower', x.length, alpha, x, 1, y, 1, A, 2 );
* // A => <Complex128Array>[ 5.0, 0.0, 0.0, 0.0, 6.0, 3.0, 8.0, 0.0 ]
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
* var zher2 = require( '@stdlib/blas/base/zher2' );
*
* var x = new Complex128Array( [ 1.0, 1.0, 1.0, 1.0 ] );
* var y = new Complex128Array( [ 1.0, 1.0, 1.0, 1.0 ] );
* var A = new Complex128Array( [ 1.0, 0.0, 0.0, 0.0, 2.0, 3.0, 4.0, 0.0 ] );
* var alpha = new Complex128( 1.0, 0.0 );
*
* zher2.ndarray( 'lower', x.length, alpha, x, 1, 0, y, 1, 0, A, 2, 1, 0 );
* // A => <Complex128Array>[ 5.0, 0.0, 0.0, 0.0, 6.0, 3.0, 8.0, 0.0 ]
*/
 
// MODULES //
 
var join = require( 'path' ).join;
var tryRequire = require( '@stdlib/utils/try-require' );
var isError = require( '@stdlib/assert/is-error' );
var main = require( './main.js' );
 
 
// MAIN //
 
var zher2;
var tmp = tryRequire( join( __dirname, './native.js' ) );
if ( isError( tmp ) ) {
	zher2 = main;
} else {
	zher2 = tmp;
}
 
 
// EXPORTS //
 
module.exports = zher2;
 
// exports: { "ndarray": "zher2.ndarray" }