naginterfaces.library.blas.axpzy

naginterfaces.library.blas.axpzy(alpha, x)

axpzy multiplies a real vector by a scalar, preserving the input vector.

For full information please refer to the NAG Library document for f06fd

https://support.nag.com/numeric/nl/nagdoc_30.1/flhtml/f06/f06fdf.html

Parameters

alphafloat

The scalar $\alpha$.

xfloat, array-like, shape $\left(n\right)$

The $n$-element vector $x$.

Returns

yfloat, ndarray, shape $\left(n\right)$

The elements $y_i$ of the vector $y$.

Notes

No equivalent traditional C interface for this routine exists in the NAG Library.

axpzy performs the operation

$$y\leftarrow \alpha x$$

where $x$ and $y$ are $n$-element real vectors, and $\alpha$ is a real scalar.