- naginterfaces.library.blas.zdotui(x, indx, y)¶
zdotuicomputes the scalar product of an unconjugated sparse complex vector with a complex vector.
For full information please refer to the NAG Library document for f06gr
- xcomplex, array-like, shape
The compressed vector . contains for .
- indxint, array-like, shape
must contain the set of indices .
- ycomplex, array-like, shape
The vector . Only elements corresponding to indices in are accessed.
The value of the scalar product.
No equivalent traditional C interface for this routine exists in the NAG Library.
zdotuireturns the value of the scalar product
where is a sparse complex vector stored in compressed form, and is a complex vector in full storage form.
Dodson, D S, Grimes, R G and Lewis, J G, 1991, Sparse extensions to the Fortran basic linear algebra subprograms, ACM Trans. Math. Software (17), 253–263