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ndarray.native.js
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ndarray.native.js
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/**
* @license Apache-2.0
*
* Copyright (c) 2020 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:https://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 minViewBufferIndex = require( '@stdlib/strided-base-min-view-buffer-index' );
var offsetView = require( '@stdlib/strided-base-offset-view' );
var addon = require( './sapxsumkbn2.native.js' );
// MAIN //
/**
* Adds a constant to each single-precision floating-point strided array element and computes the sum using a second-order iterative Kahan–Babuška algorithm.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {number} alpha - constant
* @param {Float32Array} x - input array
* @param {integer} stride - stride length
* @param {NonNegativeInteger} offset - starting index
* @returns {number} sum
*
* @example
* var Float32Array = require( '@stdlib/array-float32' );
*
* var x = new Float32Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ] );
*
* var v = sapxsumkbn2( 4, 5.0, x, 2, 1 );
* // returns 25.0
*/
function sapxsumkbn2( N, alpha, x, stride, offset ) {
var view;
offset = minViewBufferIndex( N, stride, offset );
view = offsetView( x, offset );
return addon( N, alpha, view, stride );
}
// EXPORTS //
module.exports = sapxsumkbn2;