naginterfaces.library.blas.dswap

naginterfaces.library.blas.dswap(x, y)

dswap interchanges two $n$-element real vectors $x$ and $y$.

For full information please refer to the NAG Library document for f06eg

https://support.nag.com/numeric/nl/nagdoc_30.3/flhtml/f06/f06egf.html

Parameters

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

The $n$-element vector $x$.

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

The $n$-element vector $y$.

Returns

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

The original vector $y$.

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

The original vector $x$.

Notes

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

dswap interchanges the elements of real vectors $x$ and $y$.

References

Lawson, C L, Hanson, R J, Kincaid, D R and Krogh, F T, 1979, Basic linear algebra supbrograms for Fortran usage, ACM Trans. Math. Software (5), 308–325