Multiply a one-dimensional double-precision floating-point ndarray by a scalar constant.
var dscal = require( '@stdlib/blas/base/ndarray/dscal' );Multiplies a one-dimensional double-precision floating-point ndarray by a scalar constant.
var Float64Vector = require( '@stdlib/ndarray/vector/float64' );
var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
var x = new Float64Vector( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
var alpha = scalar2ndarray( 5.0, {
'dtype': 'float64'
});
var y = dscal( [ x, alpha ] );
// returns <ndarray>[ 5.0, 10.0, 15.0, 20.0, 25.0 ]
var bool = ( y === x );
// returns trueThe function has the following parameters:
-
arrays: array-like object containing the following ndarrays:
- a one-dimensional input ndarray.
- a zero-dimensional ndarray containing a scalar constant.
var discreteUniform = require( '@stdlib/random/discrete-uniform' );
var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
var ndarray2array = require( '@stdlib/ndarray/to-array' );
var dscal = require( '@stdlib/blas/base/ndarray/dscal' );
var opts = {
'dtype': 'float64'
};
var x = discreteUniform( [ 10 ], 0, 100, opts );
console.log( ndarray2array( x ) );
var alpha = scalar2ndarray( 5.0, opts );
var out = dscal( [ x, alpha ] );
console.log( ndarray2array( out ) );