index.js

/**
* @license Apache-2.0
*
* Copyright (c) 2024 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';

var Float64Array = require( '@stdlib/array/float64' );
var linspace = require( '@stdlib/array/linspace' );
var ddot = require( '@stdlib/blas/base/ddot' );
var sin = require( '@stdlib/math/base/special/sin' );
var cos = require( '@stdlib/math/base/special/cos' );
var PI = require( '@stdlib/constants/float64/pi' );
var ns = require( './../lib' );

var resultData;
var yStrides;
var xStrides;
var xShape;
var yData;
var xData;
var y;
var x;
var i;

xData = linspace( 0, 2 * PI, 100 );
yData = linspace( 0, PI, 100 );
x = ns.ndarray( 'float64', xData, [ 100 ], [ 1 ], 0, 'row-major' );
y = ns.ndarray( 'float64', yData, [ 100 ], [ 1 ], 0, 'row-major' );

// Apply sin function to each element of x and cos function to each element of y
for ( i = 0; i < x.shape[ 0 ]; i++ ) {
	x.set( i, sin( x.get( i ) ) );
	y.set( i, cos( y.get( i ) ) );
}

resultData = new Float64Array( 1 );

xShape = x.shape[ 0 ];
xStrides = x.strides[ 0 ];
yStrides = y.strides[ 0 ];

// Calculate dot product of x and y
resultData[ 0 ] = ddot( xShape, x.data, xStrides, y.data, yStrides );

// Logs 42.00632598024892
console.log( resultData[ 0 ] );