@stdlib/blas-base-gdot
Version:
Calculate the dot product of two vectors.
100 lines (90 loc) • 2.65 kB
TypeScript
/*
* @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://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.
*/
// TypeScript Version: 4.1
/// <reference types="@stdlib/types"/>
import { NumericArray } from '@stdlib/types/array';
/**
* Interface describing `gdot`.
*/
interface Routine {
/**
* Computes the dot product of two vectors.
*
* @param N - number of indexed elements
* @param x - first input array
* @param strideX - `x` stride length
* @param y - second input array
* @param strideY - `y` stride length
* @returns dot product
*
* @example
* var x = [ 4.0, 2.0, -3.0, 5.0, -1.0 ];
* var y = [ 2.0, 6.0, -1.0, -4.0, 8.0 ];
*
* var z = gdot( x.length, x, 1, y, 1 );
* // returns -5.0
*/
( N: number, x: NumericArray, strideX: number, y: NumericArray, strideY: number ): number;
/**
* Computes the dot product of two vectors using alternative indexing semantics.
*
* @param N - number of indexed elements
* @param x - first input array
* @param strideX - `x` stride length
* @param offsetX - starting index for `x`
* @param y - second input array
* @param strideY - `y` stride length
* @param offsetY - starting index for `y`
* @returns dot product
*
* @example
* var x = [ 4.0, 2.0, -3.0, 5.0, -1.0 ];
* var y = [ 2.0, 6.0, -1.0, -4.0, 8.0 ];
*
* var z = gdot.ndarray( x.length, x, 1, 0, y, 1, 0 );
* // returns -5.0
*/
ndarray( N: number, x: NumericArray, strideX: number, offsetX: number, y: NumericArray, strideY: number, offsetY: number ): number;
}
/**
* Computes the dot product of two vectors.
*
* @param N - number of indexed elements
* @param x - first input array
* @param strideX - `x` stride length
* @param y - second input array
* @param strideY - `y` stride length
* @returns dot product
*
* @example
* var x = [ 4.0, 2.0, -3.0, 5.0, -1.0 ];
* var y = [ 2.0, 6.0, -1.0, -4.0, 8.0 ];
*
* var z = gdot( x.length, x, 1, y, 1 );
* // returns -5.0
*
* @example
* var x = [ 4.0, 2.0, -3.0, 5.0, -1.0 ];
* var y = [ 2.0, 6.0, -1.0, -4.0, 8.0 ];
*
* var z = gdot.ndarray( x.length, x, 1, 0, y, 1, 0 );
* // returns -5.0
*/
declare var gdot: Routine;
// EXPORTS //
export = gdot;