External module "blas/ddot/docs/types/index.d"

ddot

• ddot(x: ndarray, y: ndarray): number

• Computes the dot product of two double-precision floating-point vectors.

  throws

  first argument must be a 1-dimensional ndarray containing double-precision floating-point numbers

  throws

  second argument must be a 1-dimensional ndarray containing double-precision floating-point numbers

  throws

  input arrays must be the same length

  Parameters

  • x: ndarray

    first input array

  • y: ndarray

    second input array

  Returns number

  dot product

  Example

  var Float64Array = require( `@stdlib/array/float64` );
  var array = require( `@stdlib/ndarray/array` );
  
  var x = array( new Float64Array( [ 4.0, 2.0, -3.0, 5.0, -1.0 ] ) );
  var y = array( new Float64Array( [ 2.0, 6.0, -1.0, -4.0, 8.0 ] ) );
  
  var z = ddot( x, y );
  // returns -5.0